com.wallstop-studios.unity-helpers
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<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="Production-ready Unity utilities: 10-15x faster PRNGs, O(log n) spatial queries, zero-allocation pooling, Odin-level inspector tooling, and data-driven effects."><meta name=author content="Wallstop Studios"><link href=https://wallstop.github.io/unity-helpers/contributing/testing-patterns/ rel=canonical><link href=../../project/contributing/ rel=prev><link href=../../project/license/ rel=next><link rel=icon href=../../assets/images/favicon.png><meta name=generator content="mkdocs-1.6.1, mkdocs-material-9.7.3"><title>Testing Patterns - Unity Helpers</title><link rel=stylesheet href=../../assets/stylesheets/main.484c7ddc.min.css><link rel=stylesheet 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<nav class=md-nav data-md-level=2 aria-labelledby=__nav_3_4_label aria-expanded=false> <label class=md-nav__title for=__nav_3_4> <span class="md-nav__icon md-icon"></span> Effects System </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../features/effects/effects-system/ class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class=md-nav__item> <a href=../../features/effects/effects-system-tutorial/ class=md-nav__link> <span class=md-ellipsis> Tutorial </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_3_5> <label class=md-nav__link for=__nav_3_5 id=__nav_3_5_label tabindex=0> <span class=md-ellipsis> Serialization </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=2 aria-labelledby=__nav_3_5_label aria-expanded=false> <label class=md-nav__title for=__nav_3_5> <span 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<span class=md-ellipsis> Pooling Guide </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_3_7> <label class=md-nav__link for=__nav_3_7 id=__nav_3_7_label tabindex=0> <span class=md-ellipsis> Logging </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=2 aria-labelledby=__nav_3_7_label aria-expanded=false> <label class=md-nav__title for=__nav_3_7> <span class="md-nav__icon md-icon"></span> Logging </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../features/logging/logging-extensions/ class=md-nav__link> <span class=md-ellipsis> Logging Extensions </span> </a> </li> <li class=md-nav__item> <a href=../../features/logging/unity-main-thread-dispatcher/ class=md-nav__link> <span class=md-ellipsis> Main Thread Dispatcher </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_3_8> <label class=md-nav__link for=__nav_3_8 id=__nav_3_8_label tabindex=0> <span class=md-ellipsis> Editor Tools </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=2 aria-labelledby=__nav_3_8_label aria-expanded=false> <label class=md-nav__title for=__nav_3_8> <span class="md-nav__icon md-icon"></span> Editor Tools </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../features/editor-tools/editor-tools-guide/ class=md-nav__link> <span class=md-ellipsis> Tools Guide </span> </a> </li> <li class=md-nav__item> <a href=../../features/editor-tools/unity-method-analyzer/ class=md-nav__link> <span class=md-ellipsis> Unity Method Analyzer </span> </a> </li> <li class=md-nav__item> <a href=../../features/editor-tools/asset-change-detection/ class=md-nav__link> <span class=md-ellipsis> Asset Change Detection </span> </a> </li> <li class=md-nav__item> <a href=../../features/editor-tools/failed-tests-exporter/ class=md-nav__link> <span class=md-ellipsis> Failed Tests Exporter </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_4> <label class=md-nav__link for=__nav_4 id=__nav_4_label tabindex=0> <span class=md-ellipsis> Performance </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_4_label aria-expanded=false> <label class=md-nav__title for=__nav_4> <span class="md-nav__icon md-icon"></span> Performance </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../performance/random-performance/ class=md-nav__link> <span class=md-ellipsis> Random Generators </span> </a> </li> <li class=md-nav__item> <a href=../../performance/spatial-tree-2d-performance/ 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aria-expanded=true> <label class=md-nav__title for=__nav_6> <span class="md-nav__icon md-icon"></span> Contributing </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../project/contributing/ class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class="md-nav__item md-nav__item--active"> <input class="md-nav__toggle md-toggle" type=checkbox id=__toc> <label class="md-nav__link md-nav__link--active" for=__toc> <span class=md-ellipsis> Testing Patterns </span> <span class="md-nav__icon md-icon"></span> </label> <a href=./ class="md-nav__link md-nav__link--active"> <span class=md-ellipsis> Testing Patterns </span> </a> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#why-test-impossible-states class=md-nav__link> <span class=md-ellipsis> Why Test "Impossible" States </span> </a> </li> <li class=md-nav__item> <a href=#destroyed-unity-objects class=md-nav__link> <span class=md-ellipsis> Destroyed Unity Objects </span> </a> <nav class=md-nav aria-label="Destroyed Unity Objects"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#pattern-test-behavior-after-destroyimmediate class=md-nav__link> <span class=md-ellipsis> Pattern: Test Behavior After DestroyImmediate </span> </a> </li> <li class=md-nav__item> <a href=#real-example-unityextensionsbasictestscs class=md-nav__link> <span class=md-ellipsis> Real Example: UnityExtensionsBasicTests.cs </span> </a> </li> <li class=md-nav__item> <a href=#real-example-objecthelpertestscs class=md-nav__link> <span class=md-ellipsis> Real Example: ObjectHelperTests.cs </span> </a> </li> <li class=md-nav__item> <a href=#pattern-serializedobject-with-destroyed-target class=md-nav__link> <span class=md-ellipsis> Pattern: SerializedObject with Destroyed Target </span> </a> </li> <li class=md-nav__item> <a href=#real-example-scriptablesingletonserializationtestscs class=md-nav__link> <span class=md-ellipsis> Real Example: ScriptableSingletonSerializationTests.cs </span> </a> </li> <li class=md-nav__item> <a href=#real-example-wbuttonrenderingtestscs class=md-nav__link> <span class=md-ellipsis> Real Example: WButtonRenderingTests.cs </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#null-references-where-shouldnt-happen class=md-nav__link> <span class=md-ellipsis> Null References Where "Shouldn't Happen" </span> </a> <nav class=md-nav aria-label='Null References Where "Shouldn't Happen"'> <ul class=md-nav__list> <li class=md-nav__item> <a href=#pattern-explicit-null-input-handling class=md-nav__link> <span class=md-ellipsis> Pattern: Explicit Null Input Handling </span> </a> </li> <li class=md-nav__item> <a href=#real-example-objecthelpertestscs_1 class=md-nav__link> <span class=md-ellipsis> Real Example: ObjectHelperTests.cs </span> </a> </li> <li class=md-nav__item> <a href=#pattern-null-serialized-property-handling class=md-nav__link> <span class=md-ellipsis> Pattern: Null Serialized Property Handling </span> </a> </li> <li class=md-nav__item> <a href=#pattern-null-collection-elements class=md-nav__link> <span class=md-ellipsis> Pattern: Null Collection Elements </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#invalid-enum-values class=md-nav__link> <span class=md-ellipsis> Invalid Enum Values </span> </a> <nav class=md-nav aria-label="Invalid Enum Values"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#pattern-cast-invalid-integer-to-enum class=md-nav__link> <span class=md-ellipsis> Pattern: Cast Invalid Integer to Enum </span> </a> </li> <li class=md-nav__item> <a href=#pattern-test-all-enum-operations-with-invalid-values class=md-nav__link> <span class=md-ellipsis> Pattern: Test All Enum Operations with Invalid Values </span> </a> </li> <li class=md-nav__item> <a href=#real-example-enumextensiontestscs class=md-nav__link> <span class=md-ellipsis> Real Example: EnumExtensionTests.cs </span> </a> </li> <li class=md-nav__item> <a href=#pattern-invalid-serializationtype class=md-nav__link> <span class=md-ellipsis> Pattern: Invalid SerializationType </span> </a> </li> <li class=md-nav__item> <a href=#pattern-flags-enum-with-all-bits-set class=md-nav__link> <span class=md-ellipsis> Pattern: Flags Enum with All Bits Set </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#overflow-conditions class=md-nav__link> <span class=md-ellipsis> Overflow Conditions </span> </a> <nav class=md-nav aria-label="Overflow Conditions"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#pattern-extreme-numeric-values class=md-nav__link> <span class=md-ellipsis> Pattern: Extreme Numeric Values </span> </a> </li> <li class=md-nav__item> <a href=#pattern-edge-case-values-via-testcasesource class=md-nav__link> <span class=md-ellipsis> Pattern: Edge Case Values via TestCaseSource </span> </a> </li> <li class=md-nav__item> <a href=#real-example-serializeradditionaltestscs class=md-nav__link> <span class=md-ellipsis> Real Example: SerializerAdditionalTests.cs </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#corrupted-serialization-state class=md-nav__link> <span class=md-ellipsis> Corrupted Serialization State </span> </a> <nav class=md-nav aria-label="Corrupted Serialization State"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#pattern-empty-data class=md-nav__link> <span class=md-ellipsis> Pattern: Empty Data </span> </a> </li> <li class=md-nav__item> <a href=#pattern-corrupted-data class=md-nav__link> <span class=md-ellipsis> Pattern: Corrupted Data </span> </a> </li> <li class=md-nav__item> <a href=#pattern-null-data class=md-nav__link> <span class=md-ellipsis> Pattern: Null Data </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#concurrent-access-edge-cases class=md-nav__link> <span class=md-ellipsis> Concurrent Access Edge Cases </span> </a> <nav class=md-nav aria-label="Concurrent Access Edge Cases"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#pattern-concurrent-operations-do-not-corrupt-state class=md-nav__link> <span class=md-ellipsis> Pattern: Concurrent Operations Do Not Corrupt State </span> </a> </li> <li class=md-nav__item> <a href=#pattern-mixed-readwrite-operations class=md-nav__link> <span class=md-ellipsis> Pattern: Mixed Read/Write Operations </span> </a> </li> <li class=md-nav__item> <a href=#pattern-rapid-allocationdeallocation class=md-nav__link> <span class=md-ellipsis> Pattern: Rapid Allocation/Deallocation </span> </a> </li> <li class=md-nav__item> <a href=#key-practices-for-concurrent-tests class=md-nav__link> <span class=md-ellipsis> Key Practices for Concurrent Tests </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#invalid-state-combinations class=md-nav__link> <span class=md-ellipsis> Invalid State Combinations </span> </a> <nav class=md-nav aria-label="Invalid State Combinations"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#pattern-empty-collections-where-non-empty-expected class=md-nav__link> <span class=md-ellipsis> Pattern: Empty Collections Where Non-Empty Expected </span> </a> </li> <li class=md-nav__item> <a href=#real-example-spatial-tree-with-zero-elements class=md-nav__link> <span class=md-ellipsis> Real Example: Spatial Tree with Zero Elements </span> </a> </li> <li class=md-nav__item> <a href=#pattern-invalid-indexkey-access class=md-nav__link> <span class=md-ellipsis> Pattern: Invalid Index/Key Access </span> </a> </li> <li class=md-nav__item> <a href=#real-example-cyclicbuffertestscs class=md-nav__link> <span class=md-ellipsis> Real Example: CyclicBufferTests.cs </span> </a> </li> <li class=md-nav__item> <a href=#pattern-disposed-object-access class=md-nav__link> <span class=md-ellipsis> Pattern: Disposed Object Access </span> </a> </li> <li class=md-nav__item> <a href=#pattern-extreme-capacity-values class=md-nav__link> <span class=md-ellipsis> Pattern: Extreme Capacity Values </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#best-practices class=md-nav__link> <span class=md-ellipsis> Best Practices </span> </a> <nav class=md-nav aria-label="Best Practices"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#identifying-impossible-states-to-test class=md-nav__link> <span class=md-ellipsis> Identifying "Impossible" States to Test </span> </a> </li> <li class=md-nav__item> <a href=#test-structure class=md-nav__link> <span class=md-ellipsis> Test Structure </span> </a> </li> <li class=md-nav__item> <a href=#unh-suppress-usage class=md-nav__link> <span class=md-ellipsis> UNH-SUPPRESS Usage </span> </a> </li> <li class=md-nav__item> <a href=#assertions-for-impossible-states class=md-nav__link> <span class=md-ellipsis> Assertions for "Impossible" States </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#data-driven-testing-for-edge-cases class=md-nav__link> <span class=md-ellipsis> Data-Driven Testing for Edge Cases </span> </a> </li> <li class=md-nav__item> <a href=#summary class=md-nav__link> <span class=md-ellipsis> Summary </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_7> <label class=md-nav__link for=__nav_7 id=__nav_7_label tabindex=0> <span class=md-ellipsis> Project </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_7_label aria-expanded=false> <label class=md-nav__title for=__nav_7> <span class="md-nav__icon md-icon"></span> Project </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../project/license/ class=md-nav__link> <span class=md-ellipsis> License </span> </a> </li> <li class=md-nav__item> <a href=../../project/third-party-notices/ class=md-nav__link> <span class=md-ellipsis> Third-Party Notices </span> </a> </li> <li class=md-nav__item> <a href=../../project/llms-txt/ class=md-nav__link> <span class=md-ellipsis> LLMs.txt </span> </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class=md-content data-md-component=content> <nav class=md-path aria-label=Navigation> <ol class=md-path__list> <li class=md-path__item> <a href=../.. class=md-path__link> <span class=md-ellipsis> Home </span> </a> </li> <li class=md-path__item> <a href=../../project/contributing/ class=md-path__link> <span class=md-ellipsis> Contributing </span> </a> </li> </ol> </nav> <article class="md-content__inner md-typeset"> <a href=https://github.com/wallstop/unity-helpers/edit/main/docs/contributing/testing-patterns.md title="Edit this page" class="md-content__button md-icon" rel=edit> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75z"/></svg> </a> <a href=https://github.com/wallstop/unity-helpers/raw/main/docs/contributing/testing-patterns.md title="View source of this page" class="md-content__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 9a3 3 0 0 0-3 3 3 3 0 0 0 3 3 3 3 0 0 0 3-3 3 3 0 0 0-3-3m0 8a5 5 0 0 1-5-5 5 5 0 0 1 5-5 5 5 0 0 1 5 5 5 5 0 0 1-5 5m0-12.5C7 4.5 2.73 7.61 1 12c1.73 4.39 6 7.5 11 7.5s9.27-3.11 11-7.5c-1.73-4.39-6-7.5-11-7.5"/></svg> </a> <h1 id=testing-impossible-state-patterns>Testing "Impossible" State Patterns<a class=headerlink href=#testing-impossible-state-patterns title="Permanent link">¶</a></h1> <p>This guide documents patterns for testing states that "should never happen" but could occur in production. These tests catch edge cases that defensive programming must handle gracefully.</p> <h2 id=why-test-impossible-states>Why Test "Impossible" States<a class=headerlink href=#why-test-impossible-states title="Permanent link">¶</a></h2> <p>Production code encounters situations that seem impossible during development:</p> <ul> <li><strong>Destroyed Unity Objects</strong>: Objects destroyed by external code, scene unloading, or domain reloads</li> <li><strong>Null References</strong>: References that "can't be null" become null due to serialization issues, race conditions, or user error</li> <li><strong>Invalid Enum Values</strong>: Casting arbitrary integers to enums produces values not defined in the enum</li> <li><strong>Corrupted Serialization State</strong>: Save files edited by users, version mismatches, or truncated data</li> <li><strong>Overflow Conditions</strong>: Extreme values that exceed expected ranges</li> </ul> <p>Testing these scenarios ensures code fails gracefully rather than crashing or corrupting data.</p> <h2 id=destroyed-unity-objects>Destroyed Unity Objects<a class=headerlink href=#destroyed-unity-objects title="Permanent link">¶</a></h2> <p>Unity objects can be destroyed at any time by external systems. Code must handle the "fake null" state where an object reference is not <code>null</code> in C# terms but returns <code>true</code> for Unity's null check.</p> <h3 id=pattern-test-behavior-after-destroyimmediate>Pattern: Test Behavior After DestroyImmediate<a class=headerlink href=#pattern-test-behavior-after-destroyimmediate title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-0-1> 1</a></span>
<span class=normal><a href=#__codelineno-0-2> 2</a></span>
<span class=normal><a href=#__codelineno-0-3> 3</a></span>
<span class=normal><a href=#__codelineno-0-4> 4</a></span>
<span class=normal><a href=#__codelineno-0-5> 5</a></span>
<span class=normal><a href=#__codelineno-0-6> 6</a></span>
<span class=normal><a href=#__codelineno-0-7> 7</a></span>
<span class=normal><a href=#__codelineno-0-8> 8</a></span>
<span class=normal><a href=#__codelineno-0-9> 9</a></span>
<span class=normal><a href=#__codelineno-0-10>10</a></span>
<span class=normal><a href=#__codelineno-0-11>11</a></span>
<span class=normal><a href=#__codelineno-0-12>12</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-0-1><a id=__codelineno-0-1 name=__codelineno-0-1></a><span class=na>[Test]</span>
</span><span id=__span-0-2><a id=__codelineno-0-2 name=__codelineno-0-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>GetGameObjectHandlesDestroyedComponent</span><span class=p>()</span>
</span><span id=__span-0-3><a id=__codelineno-0-3 name=__codelineno-0-3></a><span class=p>{</span>
</span><span id=__span-0-4><a id=__codelineno-0-4 name=__codelineno-0-4></a><span class=w> </span><span class=n>GameObject</span><span class=w> </span><span class=n>go</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Track</span><span class=p>(</span><span class=k>new</span><span class=w> </span><span class=n>GameObject</span><span class=p>(</span><span class=s>"Test"</span><span class=p>,</span><span class=w> </span><span class=k>typeof</span><span class=p>(</span><span class=n>SpriteRenderer</span><span class=p>)));</span>
</span><span id=__span-0-5><a id=__codelineno-0-5 name=__codelineno-0-5></a><span class=w> </span><span class=n>SpriteRenderer</span><span class=w> </span><span class=n>spriteRenderer</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetComponent</span><span class=o><</span><span class=n>SpriteRenderer</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-0-6><a id=__codelineno-0-6 name=__codelineno-0-6></a>
</span><span id=__span-0-7><a id=__codelineno-0-7 name=__codelineno-0-7></a><span class=w> </span><span class=n>Object</span><span class=p>.</span><span class=n>DestroyImmediate</span><span class=p>(</span><span class=n>spriteRenderer</span><span class=p>);</span><span class=w> </span><span class=c1>// UNH-SUPPRESS: Test verifies behavior after component destruction</span>
</span><span id=__span-0-8><a id=__codelineno-0-8 name=__codelineno-0-8></a>
</span><span id=__span-0-9><a id=__codelineno-0-9 name=__codelineno-0-9></a><span class=w> </span><span class=n>GameObject</span><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>spriteRenderer</span><span class=p>.</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-0-10><a id=__codelineno-0-10 name=__codelineno-0-10></a>
</span><span id=__span-0-11><a id=__codelineno-0-11 name=__codelineno-0-11></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>,</span><span class=w> </span><span class=s>"Should return null for destroyed component"</span><span class=p>);</span>
</span><span id=__span-0-12><a id=__codelineno-0-12 name=__codelineno-0-12></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=real-example-unityextensionsbasictestscs>Real Example: UnityExtensionsBasicTests.cs<a class=headerlink href=#real-example-unityextensionsbasictestscs title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/Extensions/UnityExtensionsBasicTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-1-1> 1</a></span>
<span class=normal><a href=#__codelineno-1-2> 2</a></span>
<span class=normal><a href=#__codelineno-1-3> 3</a></span>
<span class=normal><a href=#__codelineno-1-4> 4</a></span>
<span class=normal><a href=#__codelineno-1-5> 5</a></span>
<span class=normal><a href=#__codelineno-1-6> 6</a></span>
<span class=normal><a href=#__codelineno-1-7> 7</a></span>
<span class=normal><a href=#__codelineno-1-8> 8</a></span>
<span class=normal><a href=#__codelineno-1-9> 9</a></span>
<span class=normal><a href=#__codelineno-1-10>10</a></span>
<span class=normal><a href=#__codelineno-1-11>11</a></span>
<span class=normal><a href=#__codelineno-1-12>12</a></span>
<span class=normal><a href=#__codelineno-1-13>13</a></span>
<span class=normal><a href=#__codelineno-1-14>14</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-1-1><a id=__codelineno-1-1 name=__codelineno-1-1></a><span class=na>[Test]</span>
</span><span id=__span-1-2><a id=__codelineno-1-2 name=__codelineno-1-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>GetCenterUsesCenterPointOffsetWhenAvailable</span><span class=p>()</span>
</span><span id=__span-1-3><a id=__codelineno-1-3 name=__codelineno-1-3></a><span class=p>{</span>
</span><span id=__span-1-4><a id=__codelineno-1-4 name=__codelineno-1-4></a><span class=w> </span><span class=n>GameObject</span><span class=w> </span><span class=n>go</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Track</span><span class=p>(</span><span class=k>new</span><span class=w> </span><span class=n>GameObject</span><span class=p>(</span><span class=s>"CenterPointTest"</span><span class=p>,</span><span class=w> </span><span class=k>typeof</span><span class=p>(</span><span class=n>CenterPointOffset</span><span class=p>)));</span>
</span><span id=__span-1-5><a id=__codelineno-1-5 name=__codelineno-1-5></a>
</span><span id=__span-1-6><a id=__codelineno-1-6 name=__codelineno-1-6></a><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>transform</span><span class=p>.</span><span class=n>position</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=n>Vector3</span><span class=p>(</span><span class=mf>5f</span><span class=p>,</span><span class=w> </span><span class=mf>5f</span><span class=p>,</span><span class=w> </span><span class=mf>0f</span><span class=p>);</span>
</span><span id=__span-1-7><a id=__codelineno-1-7 name=__codelineno-1-7></a><span class=w> </span><span class=n>CenterPointOffset</span><span class=w> </span><span class=n>offset</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetComponent</span><span class=o><</span><span class=n>CenterPointOffset</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-1-8><a id=__codelineno-1-8 name=__codelineno-1-8></a><span class=w> </span><span class=n>offset</span><span class=p>.</span><span class=n>offset</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=n>Vector2</span><span class=p>(</span><span class=mf>3f</span><span class=p>,</span><span class=w> </span><span class=mf>4f</span><span class=p>);</span>
</span><span id=__span-1-9><a id=__codelineno-1-9 name=__codelineno-1-9></a>
</span><span id=__span-1-10><a id=__codelineno-1-10 name=__codelineno-1-10></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>offset</span><span class=p>.</span><span class=n>CenterPoint</span><span class=p>,</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetCenter</span><span class=p>());</span>
</span><span id=__span-1-11><a id=__codelineno-1-11 name=__codelineno-1-11></a>
</span><span id=__span-1-12><a id=__codelineno-1-12 name=__codelineno-1-12></a><span class=w> </span><span class=n>Object</span><span class=p>.</span><span class=n>DestroyImmediate</span><span class=p>(</span><span class=n>offset</span><span class=p>);</span><span class=w> </span><span class=c1>// UNH-SUPPRESS: Test verifies behavior after component destruction</span>
</span><span id=__span-1-13><a id=__codelineno-1-13 name=__codelineno-1-13></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>((</span><span class=n>Vector2</span><span class=p>)</span><span class=n>go</span><span class=p>.</span><span class=n>transform</span><span class=p>.</span><span class=n>position</span><span class=p>,</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetCenter</span><span class=p>());</span>
</span><span id=__span-1-14><a id=__codelineno-1-14 name=__codelineno-1-14></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <p>This test verifies that <code>GetCenter()</code> falls back to the GameObject's transform position when the <code>CenterPointOffset</code> component is destroyed.</p> <h3 id=real-example-objecthelpertestscs>Real Example: ObjectHelperTests.cs<a class=headerlink href=#real-example-objecthelpertestscs title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/Helper/ObjectHelperTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-2-1> 1</a></span>
<span class=normal><a href=#__codelineno-2-2> 2</a></span>
<span class=normal><a href=#__codelineno-2-3> 3</a></span>
<span class=normal><a href=#__codelineno-2-4> 4</a></span>
<span class=normal><a href=#__codelineno-2-5> 5</a></span>
<span class=normal><a href=#__codelineno-2-6> 6</a></span>
<span class=normal><a href=#__codelineno-2-7> 7</a></span>
<span class=normal><a href=#__codelineno-2-8> 8</a></span>
<span class=normal><a href=#__codelineno-2-9> 9</a></span>
<span class=normal><a href=#__codelineno-2-10>10</a></span>
<span class=normal><a href=#__codelineno-2-11>11</a></span>
<span class=normal><a href=#__codelineno-2-12>12</a></span>
<span class=normal><a href=#__codelineno-2-13>13</a></span>
<span class=normal><a href=#__codelineno-2-14>14</a></span>
<span class=normal><a href=#__codelineno-2-15>15</a></span>
<span class=normal><a href=#__codelineno-2-16>16</a></span>
<span class=normal><a href=#__codelineno-2-17>17</a></span>
<span class=normal><a href=#__codelineno-2-18>18</a></span>
<span class=normal><a href=#__codelineno-2-19>19</a></span>
<span class=normal><a href=#__codelineno-2-20>20</a></span>
<span class=normal><a href=#__codelineno-2-21>21</a></span>
<span class=normal><a href=#__codelineno-2-22>22</a></span>
<span class=normal><a href=#__codelineno-2-23>23</a></span>
<span class=normal><a href=#__codelineno-2-24>24</a></span>
<span class=normal><a href=#__codelineno-2-25>25</a></span>
<span class=normal><a href=#__codelineno-2-26>26</a></span>
<span class=normal><a href=#__codelineno-2-27>27</a></span>
<span class=normal><a href=#__codelineno-2-28>28</a></span>
<span class=normal><a href=#__codelineno-2-29>29</a></span>
<span class=normal><a href=#__codelineno-2-30>30</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-2-1><a id=__codelineno-2-1 name=__codelineno-2-1></a><span class=na>[UnityTest]</span>
</span><span id=__span-2-2><a id=__codelineno-2-2 name=__codelineno-2-2></a><span class=k>public</span><span class=w> </span><span class=n>IEnumerator</span><span class=w> </span><span class=nf>GetGameObject</span><span class=p>()</span>
</span><span id=__span-2-3><a id=__codelineno-2-3 name=__codelineno-2-3></a><span class=p>{</span>
</span><span id=__span-2-4><a id=__codelineno-2-4 name=__codelineno-2-4></a><span class=w> </span><span class=n>GameObject</span><span class=w> </span><span class=n>go</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Track</span><span class=p>(</span><span class=k>new</span><span class=w> </span><span class=n>GameObject</span><span class=p>(</span><span class=s>"Test"</span><span class=p>,</span><span class=w> </span><span class=k>typeof</span><span class=p>(</span><span class=n>SpriteRenderer</span><span class=p>)));</span>
</span><span id=__span-2-5><a id=__codelineno-2-5 name=__codelineno-2-5></a><span class=w> </span><span class=n>SpriteRenderer</span><span class=w> </span><span class=n>spriteRenderer</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetComponent</span><span class=o><</span><span class=n>SpriteRenderer</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-2-6><a id=__codelineno-2-6 name=__codelineno-2-6></a>
</span><span id=__span-2-7><a id=__codelineno-2-7 name=__codelineno-2-7></a><span class=w> </span><span class=n>GameObject</span><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-2-8><a id=__codelineno-2-8 name=__codelineno-2-8></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>result</span><span class=p>,</span><span class=w> </span><span class=n>go</span><span class=p>);</span>
</span><span id=__span-2-9><a id=__codelineno-2-9 name=__codelineno-2-9></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>spriteRenderer</span><span class=p>.</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-2-10><a id=__codelineno-2-10 name=__codelineno-2-10></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>result</span><span class=p>,</span><span class=w> </span><span class=n>go</span><span class=p>);</span>
</span><span id=__span-2-11><a id=__codelineno-2-11 name=__codelineno-2-11></a>
</span><span id=__span-2-12><a id=__codelineno-2-12 name=__codelineno-2-12></a><span class=w> </span><span class=n>Object</span><span class=p>.</span><span class=n>DestroyImmediate</span><span class=p>(</span><span class=n>spriteRenderer</span><span class=p>);</span><span class=w> </span><span class=c1>// UNH-SUPPRESS: Test verifies behavior after component destruction</span>
</span><span id=__span-2-13><a id=__codelineno-2-13 name=__codelineno-2-13></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>spriteRenderer</span><span class=p>.</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-2-14><a id=__codelineno-2-14 name=__codelineno-2-14></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-2-15><a id=__codelineno-2-15 name=__codelineno-2-15></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-2-16><a id=__codelineno-2-16 name=__codelineno-2-16></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>result</span><span class=p>,</span><span class=w> </span><span class=n>go</span><span class=p>);</span>
</span><span id=__span-2-17><a id=__codelineno-2-17 name=__codelineno-2-17></a>
</span><span id=__span-2-18><a id=__codelineno-2-18 name=__codelineno-2-18></a><span class=w> </span><span class=n>Object</span><span class=p>.</span><span class=n>DestroyImmediate</span><span class=p>(</span><span class=n>go</span><span class=p>);</span><span class=w> </span><span class=c1>// UNH-SUPPRESS: Test verifies behavior after GameObject destruction</span>
</span><span id=__span-2-19><a id=__codelineno-2-19 name=__codelineno-2-19></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>spriteRenderer</span><span class=p>.</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-2-20><a id=__codelineno-2-20 name=__codelineno-2-20></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-2-21><a id=__codelineno-2-21 name=__codelineno-2-21></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-2-22><a id=__codelineno-2-22 name=__codelineno-2-22></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-2-23><a id=__codelineno-2-23 name=__codelineno-2-23></a>
</span><span id=__span-2-24><a id=__codelineno-2-24 name=__codelineno-2-24></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>((</span><span class=n>GameObject</span><span class=p>)</span><span class=k>null</span><span class=p>).</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-2-25><a id=__codelineno-2-25 name=__codelineno-2-25></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-2-26><a id=__codelineno-2-26 name=__codelineno-2-26></a>
</span><span id=__span-2-27><a id=__codelineno-2-27 name=__codelineno-2-27></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>((</span><span class=n>SpriteRenderer</span><span class=p>)</span><span class=k>null</span><span class=p>).</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-2-28><a id=__codelineno-2-28 name=__codelineno-2-28></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-2-29><a id=__codelineno-2-29 name=__codelineno-2-29></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>break</span><span class=p>;</span>
</span><span id=__span-2-30><a id=__codelineno-2-30 name=__codelineno-2-30></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <p>This test verifies:</p> <ol> <li>Normal operation with valid objects</li> <li>Behavior after component destruction (object still valid)</li> <li>Behavior after GameObject destruction (both references invalid)</li> <li>Explicit null input handling</li> </ol> <h3 id=pattern-serializedobject-with-destroyed-target>Pattern: SerializedObject with Destroyed Target<a class=headerlink href=#pattern-serializedobject-with-destroyed-target title="Permanent link">¶</a></h3> <p>Editor code often works with <code>SerializedObject</code> and <code>SerializedProperty</code>. When the target object is destroyed, these become invalid but may not be null.</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-3-1> 1</a></span>
<span class=normal><a href=#__codelineno-3-2> 2</a></span>
<span class=normal><a href=#__codelineno-3-3> 3</a></span>
<span class=normal><a href=#__codelineno-3-4> 4</a></span>
<span class=normal><a href=#__codelineno-3-5> 5</a></span>
<span class=normal><a href=#__codelineno-3-6> 6</a></span>
<span class=normal><a href=#__codelineno-3-7> 7</a></span>
<span class=normal><a href=#__codelineno-3-8> 8</a></span>
<span class=normal><a href=#__codelineno-3-9> 9</a></span>
<span class=normal><a href=#__codelineno-3-10>10</a></span>
<span class=normal><a href=#__codelineno-3-11>11</a></span>
<span class=normal><a href=#__codelineno-3-12>12</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-3-1><a id=__codelineno-3-1 name=__codelineno-3-1></a><span class=na>[Test]</span>
</span><span id=__span-3-2><a id=__codelineno-3-2 name=__codelineno-3-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>DrawerHandlesDestroyedSerializedObjectTarget</span><span class=p>()</span>
</span><span id=__span-3-3><a id=__codelineno-3-3 name=__codelineno-3-3></a><span class=p>{</span>
</span><span id=__span-3-4><a id=__codelineno-3-4 name=__codelineno-3-4></a><span class=w> </span><span class=n>MyScriptableObject</span><span class=w> </span><span class=n>target</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>CreateScriptableObject</span><span class=o><</span><span class=n>MyScriptableObject</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-3-5><a id=__codelineno-3-5 name=__codelineno-3-5></a><span class=w> </span><span class=n>SerializedObject</span><span class=w> </span><span class=n>serializedObject</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=n>SerializedObject</span><span class=p>(</span><span class=n>target</span><span class=p>);</span>
</span><span id=__span-3-6><a id=__codelineno-3-6 name=__codelineno-3-6></a><span class=w> </span><span class=n>SerializedProperty</span><span class=w> </span><span class=n>property</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>serializedObject</span><span class=p>.</span><span class=n>FindProperty</span><span class=p>(</span><span class=s>"myField"</span><span class=p>);</span>
</span><span id=__span-3-7><a id=__codelineno-3-7 name=__codelineno-3-7></a>
</span><span id=__span-3-8><a id=__codelineno-3-8 name=__codelineno-3-8></a><span class=w> </span><span class=n>Object</span><span class=p>.</span><span class=n>DestroyImmediate</span><span class=p>(</span><span class=n>target</span><span class=p>);</span><span class=w> </span><span class=c1>// UNH-SUPPRESS: Test verifies behavior after target destroyed</span>
</span><span id=__span-3-9><a id=__codelineno-3-9 name=__codelineno-3-9></a>
</span><span id=__span-3-10><a id=__codelineno-3-10 name=__codelineno-3-10></a><span class=w> </span><span class=c1>// SerializedObject.targetObject is now null</span>
</span><span id=__span-3-11><a id=__codelineno-3-11 name=__codelineno-3-11></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>DoesNotThrow</span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>drawer</span><span class=p>.</span><span class=n>OnGUI</span><span class=p>(</span><span class=n>rect</span><span class=p>,</span><span class=w> </span><span class=n>property</span><span class=p>,</span><span class=w> </span><span class=n>label</span><span class=p>));</span>
</span><span id=__span-3-12><a id=__codelineno-3-12 name=__codelineno-3-12></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=real-example-scriptablesingletonserializationtestscs>Real Example: ScriptableSingletonSerializationTests.cs<a class=headerlink href=#real-example-scriptablesingletonserializationtestscs title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Editor/CustomDrawers/ScriptableSingletonSerializationTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-4-1> 1</a></span>
<span class=normal><a href=#__codelineno-4-2> 2</a></span>
<span class=normal><a href=#__codelineno-4-3> 3</a></span>
<span class=normal><a href=#__codelineno-4-4> 4</a></span>
<span class=normal><a href=#__codelineno-4-5> 5</a></span>
<span class=normal><a href=#__codelineno-4-6> 6</a></span>
<span class=normal><a href=#__codelineno-4-7> 7</a></span>
<span class=normal><a href=#__codelineno-4-8> 8</a></span>
<span class=normal><a href=#__codelineno-4-9> 9</a></span>
<span class=normal><a href=#__codelineno-4-10>10</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-4-1><a id=__codelineno-4-1 name=__codelineno-4-1></a><span class=na>[Test]</span>
</span><span id=__span-4-2><a id=__codelineno-4-2 name=__codelineno-4-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>IsScriptableSingletonTypeWithDestroyedObjectReturnsFalse</span><span class=p>()</span>
</span><span id=__span-4-3><a id=__codelineno-4-3 name=__codelineno-4-3></a><span class=p>{</span>
</span><span id=__span-4-4><a id=__codelineno-4-4 name=__codelineno-4-4></a><span class=w> </span><span class=n>RegularScriptableObject</span><span class=w> </span><span class=n>target</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>CreateScriptableObject</span><span class=o><</span><span class=n>RegularScriptableObject</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-4-5><a id=__codelineno-4-5 name=__codelineno-4-5></a><span class=w> </span><span class=n>Object</span><span class=p>.</span><span class=n>DestroyImmediate</span><span class=p>(</span><span class=n>target</span><span class=p>);</span><span class=w> </span><span class=c1>// UNH-SUPPRESS: Testing destroyed object handling</span>
</span><span id=__span-4-6><a id=__codelineno-4-6 name=__codelineno-4-6></a>
</span><span id=__span-4-7><a id=__codelineno-4-7 name=__codelineno-4-7></a><span class=w> </span><span class=c1>// Unity's null check should handle destroyed objects</span>
</span><span id=__span-4-8><a id=__codelineno-4-8 name=__codelineno-4-8></a><span class=w> </span><span class=kt>bool</span><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>SerializableDictionaryPropertyDrawer</span><span class=p>.</span><span class=n>IsScriptableSingletonType</span><span class=p>(</span><span class=n>target</span><span class=p>);</span>
</span><span id=__span-4-9><a id=__codelineno-4-9 name=__codelineno-4-9></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsFalse</span><span class=p>(</span><span class=n>result</span><span class=p>,</span><span class=w> </span><span class=s>"Destroyed object should return false (Unity null check)."</span><span class=p>);</span>
</span><span id=__span-4-10><a id=__codelineno-4-10 name=__codelineno-4-10></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=real-example-wbuttonrenderingtestscs>Real Example: WButtonRenderingTests.cs<a class=headerlink href=#real-example-wbuttonrenderingtestscs title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Editor/Utils/WButton/WButtonRenderingTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-5-1> 1</a></span>
<span class=normal><a href=#__codelineno-5-2> 2</a></span>
<span class=normal><a href=#__codelineno-5-3> 3</a></span>
<span class=normal><a href=#__codelineno-5-4> 4</a></span>
<span class=normal><a href=#__codelineno-5-5> 5</a></span>
<span class=normal><a href=#__codelineno-5-6> 6</a></span>
<span class=normal><a href=#__codelineno-5-7> 7</a></span>
<span class=normal><a href=#__codelineno-5-8> 8</a></span>
<span class=normal><a href=#__codelineno-5-9> 9</a></span>
<span class=normal><a href=#__codelineno-5-10>10</a></span>
<span class=normal><a href=#__codelineno-5-11>11</a></span>
<span class=normal><a href=#__codelineno-5-12>12</a></span>
<span class=normal><a href=#__codelineno-5-13>13</a></span>
<span class=normal><a href=#__codelineno-5-14>14</a></span>
<span class=normal><a href=#__codelineno-5-15>15</a></span>
<span class=normal><a href=#__codelineno-5-16>16</a></span>
<span class=normal><a href=#__codelineno-5-17>17</a></span>
<span class=normal><a href=#__codelineno-5-18>18</a></span>
<span class=normal><a href=#__codelineno-5-19>19</a></span>
<span class=normal><a href=#__codelineno-5-20>20</a></span>
<span class=normal><a href=#__codelineno-5-21>21</a></span>
<span class=normal><a href=#__codelineno-5-22>22</a></span>
<span class=normal><a href=#__codelineno-5-23>23</a></span>
<span class=normal><a href=#__codelineno-5-24>24</a></span>
<span class=normal><a href=#__codelineno-5-25>25</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-5-1><a id=__codelineno-5-1 name=__codelineno-5-1></a><span class=na>[Test]</span>
</span><span id=__span-5-2><a id=__codelineno-5-2 name=__codelineno-5-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>NullEditorTargetHandledGracefully</span><span class=p>()</span>
</span><span id=__span-5-3><a id=__codelineno-5-3 name=__codelineno-5-3></a><span class=p>{</span>
</span><span id=__span-5-4><a id=__codelineno-5-4 name=__codelineno-5-4></a><span class=w> </span><span class=n>RenderingTargetSingleButton</span><span class=w> </span><span class=n>asset</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Track</span><span class=p>(</span>
</span><span id=__span-5-5><a id=__codelineno-5-5 name=__codelineno-5-5></a><span class=w> </span><span class=n>ScriptableObject</span><span class=p>.</span><span class=n>CreateInstance</span><span class=o><</span><span class=n>RenderingTargetSingleButton</span><span class=o>></span><span class=p>()</span>
</span><span id=__span-5-6><a id=__codelineno-5-6 name=__codelineno-5-6></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-5-7><a id=__codelineno-5-7 name=__codelineno-5-7></a><span class=w> </span><span class=n>UnityEditor</span><span class=p>.</span><span class=n>Editor</span><span class=w> </span><span class=n>editor</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Track</span><span class=p>(</span><span class=n>UnityEditor</span><span class=p>.</span><span class=n>Editor</span><span class=p>.</span><span class=n>CreateEditor</span><span class=p>(</span><span class=n>asset</span><span class=p>));</span>
</span><span id=__span-5-8><a id=__codelineno-5-8 name=__codelineno-5-8></a><span class=w> </span><span class=n>Dictionary</span><span class=o><</span><span class=n>WButtonGroupKey</span><span class=p>,</span><span class=w> </span><span class=n>WButtonPaginationState</span><span class=o>></span><span class=w> </span><span class=n>paginationStates</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>();</span>
</span><span id=__span-5-9><a id=__codelineno-5-9 name=__codelineno-5-9></a><span class=w> </span><span class=n>Dictionary</span><span class=o><</span><span class=n>WButtonGroupKey</span><span class=p>,</span><span class=w> </span><span class=kt>bool</span><span class=o>></span><span class=w> </span><span class=n>foldoutStates</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>();</span>
</span><span id=__span-5-10><a id=__codelineno-5-10 name=__codelineno-5-10></a>
</span><span id=__span-5-11><a id=__codelineno-5-11 name=__codelineno-5-11></a><span class=w> </span><span class=n>Object</span><span class=p>.</span><span class=n>DestroyImmediate</span><span class=p>(</span><span class=n>asset</span><span class=p>);</span><span class=w> </span><span class=c1>// UNH-SUPPRESS: Test verifies behavior when target is destroyed</span>
</span><span id=__span-5-12><a id=__codelineno-5-12 name=__codelineno-5-12></a><span class=w> </span><span class=n>_trackedObjects</span><span class=p>.</span><span class=n>Remove</span><span class=p>(</span><span class=n>asset</span><span class=p>);</span>
</span><span id=__span-5-13><a id=__codelineno-5-13 name=__codelineno-5-13></a>
</span><span id=__span-5-14><a id=__codelineno-5-14 name=__codelineno-5-14></a><span class=w> </span><span class=kt>bool</span><span class=w> </span><span class=n>drawn</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>WButtonGUI</span><span class=p>.</span><span class=n>DrawButtons</span><span class=p>(</span>
</span><span id=__span-5-15><a id=__codelineno-5-15 name=__codelineno-5-15></a><span class=w> </span><span class=n>editor</span><span class=p>,</span>
</span><span id=__span-5-16><a id=__codelineno-5-16 name=__codelineno-5-16></a><span class=w> </span><span class=n>WButtonPlacement</span><span class=p>.</span><span class=n>Top</span><span class=p>,</span>
</span><span id=__span-5-17><a id=__codelineno-5-17 name=__codelineno-5-17></a><span class=w> </span><span class=n>paginationStates</span><span class=p>,</span>
</span><span id=__span-5-18><a id=__codelineno-5-18 name=__codelineno-5-18></a><span class=w> </span><span class=n>foldoutStates</span><span class=p>,</span>
</span><span id=__span-5-19><a id=__codelineno-5-19 name=__codelineno-5-19></a><span class=w> </span><span class=n>UnityHelpersSettings</span><span class=p>.</span><span class=n>WButtonFoldoutBehavior</span><span class=p>.</span><span class=n>AlwaysOpen</span><span class=p>,</span>
</span><span id=__span-5-20><a id=__codelineno-5-20 name=__codelineno-5-20></a><span class=w> </span><span class=n>triggeredContexts</span><span class=p>:</span><span class=w> </span><span class=k>null</span><span class=p>,</span>
</span><span id=__span-5-21><a id=__codelineno-5-21 name=__codelineno-5-21></a><span class=w> </span><span class=n>globalPlacementIsTop</span><span class=p>:</span><span class=w> </span><span class=k>true</span>
</span><span id=__span-5-22><a id=__codelineno-5-22 name=__codelineno-5-22></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-5-23><a id=__codelineno-5-23 name=__codelineno-5-23></a>
</span><span id=__span-5-24><a id=__codelineno-5-24 name=__codelineno-5-24></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>That</span><span class=p>(</span><span class=n>drawn</span><span class=p>,</span><span class=w> </span><span class=n>Is</span><span class=p>.</span><span class=n>False</span><span class=p>,</span><span class=w> </span><span class=s>"Should return false when target is destroyed"</span><span class=p>);</span>
</span><span id=__span-5-25><a id=__codelineno-5-25 name=__codelineno-5-25></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h2 id=null-references-where-shouldnt-happen>Null References Where "Shouldn't Happen"<a class=headerlink href=#null-references-where-shouldnt-happen title="Permanent link">¶</a></h2> <p>References that "can't be null" sometimes become null due to serialization issues, race conditions, improper initialization, or user error. Robust code must handle these cases gracefully.</p> <h3 id=pattern-explicit-null-input-handling>Pattern: Explicit Null Input Handling<a class=headerlink href=#pattern-explicit-null-input-handling title="Permanent link">¶</a></h3> <p>Test that methods handle null inputs gracefully, even when callers are "supposed to" provide non-null values.</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-6-1> 1</a></span>
<span class=normal><a href=#__codelineno-6-2> 2</a></span>
<span class=normal><a href=#__codelineno-6-3> 3</a></span>
<span class=normal><a href=#__codelineno-6-4> 4</a></span>
<span class=normal><a href=#__codelineno-6-5> 5</a></span>
<span class=normal><a href=#__codelineno-6-6> 6</a></span>
<span class=normal><a href=#__codelineno-6-7> 7</a></span>
<span class=normal><a href=#__codelineno-6-8> 8</a></span>
<span class=normal><a href=#__codelineno-6-9> 9</a></span>
<span class=normal><a href=#__codelineno-6-10>10</a></span>
<span class=normal><a href=#__codelineno-6-11>11</a></span>
<span class=normal><a href=#__codelineno-6-12>12</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-6-1><a id=__codelineno-6-1 name=__codelineno-6-1></a><span class=na>[Test]</span>
</span><span id=__span-6-2><a id=__codelineno-6-2 name=__codelineno-6-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProcessNullInputDoesNotThrow</span><span class=p>()</span>
</span><span id=__span-6-3><a id=__codelineno-6-3 name=__codelineno-6-3></a><span class=p>{</span>
</span><span id=__span-6-4><a id=__codelineno-6-4 name=__codelineno-6-4></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>DoesNotThrow</span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>Processor</span><span class=p>.</span><span class=n>Process</span><span class=p>(</span><span class=k>null</span><span class=p>));</span>
</span><span id=__span-6-5><a id=__codelineno-6-5 name=__codelineno-6-5></a><span class=p>}</span>
</span><span id=__span-6-6><a id=__codelineno-6-6 name=__codelineno-6-6></a>
</span><span id=__span-6-7><a id=__codelineno-6-7 name=__codelineno-6-7></a><span class=na>[Test]</span>
</span><span id=__span-6-8><a id=__codelineno-6-8 name=__codelineno-6-8></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProcessNullInputReturnsDefault</span><span class=p>()</span>
</span><span id=__span-6-9><a id=__codelineno-6-9 name=__codelineno-6-9></a><span class=p>{</span>
</span><span id=__span-6-10><a id=__codelineno-6-10 name=__codelineno-6-10></a><span class=w> </span><span class=kt>var</span><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Processor</span><span class=p>.</span><span class=n>Process</span><span class=p>(</span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-6-11><a id=__codelineno-6-11 name=__codelineno-6-11></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=k>default</span><span class=p>(</span><span class=n>MyType</span><span class=p>),</span><span class=w> </span><span class=n>result</span><span class=p>);</span>
</span><span id=__span-6-12><a id=__codelineno-6-12 name=__codelineno-6-12></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=real-example-objecthelpertestscs_1>Real Example: ObjectHelperTests.cs<a class=headerlink href=#real-example-objecthelpertestscs_1 title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/Helper/ObjectHelperTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-7-1> 1</a></span>
<span class=normal><a href=#__codelineno-7-2> 2</a></span>
<span class=normal><a href=#__codelineno-7-3> 3</a></span>
<span class=normal><a href=#__codelineno-7-4> 4</a></span>
<span class=normal><a href=#__codelineno-7-5> 5</a></span>
<span class=normal><a href=#__codelineno-7-6> 6</a></span>
<span class=normal><a href=#__codelineno-7-7> 7</a></span>
<span class=normal><a href=#__codelineno-7-8> 8</a></span>
<span class=normal><a href=#__codelineno-7-9> 9</a></span>
<span class=normal><a href=#__codelineno-7-10>10</a></span>
<span class=normal><a href=#__codelineno-7-11>11</a></span>
<span class=normal><a href=#__codelineno-7-12>12</a></span>
<span class=normal><a href=#__codelineno-7-13>13</a></span>
<span class=normal><a href=#__codelineno-7-14>14</a></span>
<span class=normal><a href=#__codelineno-7-15>15</a></span>
<span class=normal><a href=#__codelineno-7-16>16</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-7-1><a id=__codelineno-7-1 name=__codelineno-7-1></a><span class=na>[UnityTest]</span>
</span><span id=__span-7-2><a id=__codelineno-7-2 name=__codelineno-7-2></a><span class=k>public</span><span class=w> </span><span class=n>IEnumerator</span><span class=w> </span><span class=nf>GetGameObject</span><span class=p>()</span>
</span><span id=__span-7-3><a id=__codelineno-7-3 name=__codelineno-7-3></a><span class=p>{</span>
</span><span id=__span-7-4><a id=__codelineno-7-4 name=__codelineno-7-4></a><span class=w> </span><span class=n>GameObject</span><span class=w> </span><span class=n>go</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Track</span><span class=p>(</span><span class=k>new</span><span class=w> </span><span class=n>GameObject</span><span class=p>(</span><span class=s>"Test"</span><span class=p>,</span><span class=w> </span><span class=k>typeof</span><span class=p>(</span><span class=n>SpriteRenderer</span><span class=p>)));</span>
</span><span id=__span-7-5><a id=__codelineno-7-5 name=__codelineno-7-5></a><span class=w> </span><span class=n>SpriteRenderer</span><span class=w> </span><span class=n>spriteRenderer</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>go</span><span class=p>.</span><span class=n>GetComponent</span><span class=o><</span><span class=n>SpriteRenderer</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-7-6><a id=__codelineno-7-6 name=__codelineno-7-6></a>
</span><span id=__span-7-7><a id=__codelineno-7-7 name=__codelineno-7-7></a><span class=w> </span><span class=c1>// ... (normal operation tests) ...</span>
</span><span id=__span-7-8><a id=__codelineno-7-8 name=__codelineno-7-8></a>
</span><span id=__span-7-9><a id=__codelineno-7-9 name=__codelineno-7-9></a><span class=w> </span><span class=c1>// Test explicit null input handling</span>
</span><span id=__span-7-10><a id=__codelineno-7-10 name=__codelineno-7-10></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>((</span><span class=n>GameObject</span><span class=p>)</span><span class=k>null</span><span class=p>).</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-7-11><a id=__codelineno-7-11 name=__codelineno-7-11></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-7-12><a id=__codelineno-7-12 name=__codelineno-7-12></a>
</span><span id=__span-7-13><a id=__codelineno-7-13 name=__codelineno-7-13></a><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>((</span><span class=n>SpriteRenderer</span><span class=p>)</span><span class=k>null</span><span class=p>).</span><span class=n>GetGameObject</span><span class=p>();</span>
</span><span id=__span-7-14><a id=__codelineno-7-14 name=__codelineno-7-14></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-7-15><a id=__codelineno-7-15 name=__codelineno-7-15></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>break</span><span class=p>;</span>
</span><span id=__span-7-16><a id=__codelineno-7-16 name=__codelineno-7-16></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <p>This test verifies that extension methods handle explicit null inputs gracefully, returning null rather than throwing NullReferenceException.</p> <h3 id=pattern-null-serialized-property-handling>Pattern: Null Serialized Property Handling<a class=headerlink href=#pattern-null-serialized-property-handling title="Permanent link">¶</a></h3> <p>Editor code may receive null SerializedProperty references due to timing issues or invalid property paths.</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-8-1> 1</a></span>
<span class=normal><a href=#__codelineno-8-2> 2</a></span>
<span class=normal><a href=#__codelineno-8-3> 3</a></span>
<span class=normal><a href=#__codelineno-8-4> 4</a></span>
<span class=normal><a href=#__codelineno-8-5> 5</a></span>
<span class=normal><a href=#__codelineno-8-6> 6</a></span>
<span class=normal><a href=#__codelineno-8-7> 7</a></span>
<span class=normal><a href=#__codelineno-8-8> 8</a></span>
<span class=normal><a href=#__codelineno-8-9> 9</a></span>
<span class=normal><a href=#__codelineno-8-10>10</a></span>
<span class=normal><a href=#__codelineno-8-11>11</a></span>
<span class=normal><a href=#__codelineno-8-12>12</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-8-1><a id=__codelineno-8-1 name=__codelineno-8-1></a><span class=na>[Test]</span>
</span><span id=__span-8-2><a id=__codelineno-8-2 name=__codelineno-8-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>DrawPropertyHandlesNullProperty</span><span class=p>()</span>
</span><span id=__span-8-3><a id=__codelineno-8-3 name=__codelineno-8-3></a><span class=p>{</span>
</span><span id=__span-8-4><a id=__codelineno-8-4 name=__codelineno-8-4></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>DoesNotThrow</span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>CustomDrawer</span><span class=p>.</span><span class=n>DrawProperty</span><span class=p>(</span><span class=k>null</span><span class=p>,</span><span class=w> </span><span class=n>GUIContent</span><span class=p>.</span><span class=n>none</span><span class=p>));</span>
</span><span id=__span-8-5><a id=__codelineno-8-5 name=__codelineno-8-5></a><span class=p>}</span>
</span><span id=__span-8-6><a id=__codelineno-8-6 name=__codelineno-8-6></a>
</span><span id=__span-8-7><a id=__codelineno-8-7 name=__codelineno-8-7></a><span class=na>[Test]</span>
</span><span id=__span-8-8><a id=__codelineno-8-8 name=__codelineno-8-8></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>GetValueFromNullPropertyReturnsDefault</span><span class=p>()</span>
</span><span id=__span-8-9><a id=__codelineno-8-9 name=__codelineno-8-9></a><span class=p>{</span>
</span><span id=__span-8-10><a id=__codelineno-8-10 name=__codelineno-8-10></a><span class=w> </span><span class=kt>object</span><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>PropertyHelper</span><span class=p>.</span><span class=n>GetValue</span><span class=p>(</span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-8-11><a id=__codelineno-8-11 name=__codelineno-8-11></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsNull</span><span class=p>(</span><span class=n>result</span><span class=p>);</span>
</span><span id=__span-8-12><a id=__codelineno-8-12 name=__codelineno-8-12></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-null-collection-elements>Pattern: Null Collection Elements<a class=headerlink href=#pattern-null-collection-elements title="Permanent link">¶</a></h3> <p>Collections may contain null elements even when the code assumes they won't.</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-9-1> 1</a></span>
<span class=normal><a href=#__codelineno-9-2> 2</a></span>
<span class=normal><a href=#__codelineno-9-3> 3</a></span>
<span class=normal><a href=#__codelineno-9-4> 4</a></span>
<span class=normal><a href=#__codelineno-9-5> 5</a></span>
<span class=normal><a href=#__codelineno-9-6> 6</a></span>
<span class=normal><a href=#__codelineno-9-7> 7</a></span>
<span class=normal><a href=#__codelineno-9-8> 8</a></span>
<span class=normal><a href=#__codelineno-9-9> 9</a></span>
<span class=normal><a href=#__codelineno-9-10>10</a></span>
<span class=normal><a href=#__codelineno-9-11>11</a></span>
<span class=normal><a href=#__codelineno-9-12>12</a></span>
<span class=normal><a href=#__codelineno-9-13>13</a></span>
<span class=normal><a href=#__codelineno-9-14>14</a></span>
<span class=normal><a href=#__codelineno-9-15>15</a></span>
<span class=normal><a href=#__codelineno-9-16>16</a></span>
<span class=normal><a href=#__codelineno-9-17>17</a></span>
<span class=normal><a href=#__codelineno-9-18>18</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-9-1><a id=__codelineno-9-1 name=__codelineno-9-1></a><span class=na>[Test]</span>
</span><span id=__span-9-2><a id=__codelineno-9-2 name=__codelineno-9-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProcessCollectionWithNullElementsSucceeds</span><span class=p>()</span>
</span><span id=__span-9-3><a id=__codelineno-9-3 name=__codelineno-9-3></a><span class=p>{</span>
</span><span id=__span-9-4><a id=__codelineno-9-4 name=__codelineno-9-4></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=kt>string</span><span class=o>></span><span class=w> </span><span class=n>items</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>()</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=s>"A"</span><span class=p>,</span><span class=w> </span><span class=k>null</span><span class=p>,</span><span class=w> </span><span class=s>"B"</span><span class=p>,</span><span class=w> </span><span class=k>null</span><span class=p>,</span><span class=w> </span><span class=s>"C"</span><span class=w> </span><span class=p>};</span>
</span><span id=__span-9-5><a id=__codelineno-9-5 name=__codelineno-9-5></a>
</span><span id=__span-9-6><a id=__codelineno-9-6 name=__codelineno-9-6></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>DoesNotThrow</span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>Processor</span><span class=p>.</span><span class=n>ProcessAll</span><span class=p>(</span><span class=n>items</span><span class=p>));</span>
</span><span id=__span-9-7><a id=__codelineno-9-7 name=__codelineno-9-7></a><span class=p>}</span>
</span><span id=__span-9-8><a id=__codelineno-9-8 name=__codelineno-9-8></a>
</span><span id=__span-9-9><a id=__codelineno-9-9 name=__codelineno-9-9></a><span class=na>[Test]</span>
</span><span id=__span-9-10><a id=__codelineno-9-10 name=__codelineno-9-10></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>FilterHandlesNullElements</span><span class=p>()</span>
</span><span id=__span-9-11><a id=__codelineno-9-11 name=__codelineno-9-11></a><span class=p>{</span>
</span><span id=__span-9-12><a id=__codelineno-9-12 name=__codelineno-9-12></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=n>Component</span><span class=o>></span><span class=w> </span><span class=n>components</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>()</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=n>validComponent</span><span class=p>,</span><span class=w> </span><span class=k>null</span><span class=p>,</span><span class=w> </span><span class=n>anotherValid</span><span class=w> </span><span class=p>};</span>
</span><span id=__span-9-13><a id=__codelineno-9-13 name=__codelineno-9-13></a>
</span><span id=__span-9-14><a id=__codelineno-9-14 name=__codelineno-9-14></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=n>Component</span><span class=o>></span><span class=w> </span><span class=n>filtered</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>ComponentFilter</span><span class=p>.</span><span class=n>FilterValid</span><span class=p>(</span><span class=n>components</span><span class=p>);</span>
</span><span id=__span-9-15><a id=__codelineno-9-15 name=__codelineno-9-15></a>
</span><span id=__span-9-16><a id=__codelineno-9-16 name=__codelineno-9-16></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>That</span><span class=p>(</span><span class=n>filtered</span><span class=p>,</span><span class=w> </span><span class=n>Has</span><span class=p>.</span><span class=n>None</span><span class=p>.</span><span class=n>Null</span><span class=p>);</span>
</span><span id=__span-9-17><a id=__codelineno-9-17 name=__codelineno-9-17></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=mi>2</span><span class=p>,</span><span class=w> </span><span class=n>filtered</span><span class=p>.</span><span class=n>Count</span><span class=p>);</span>
</span><span id=__span-9-18><a id=__codelineno-9-18 name=__codelineno-9-18></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h2 id=invalid-enum-values>Invalid Enum Values<a class=headerlink href=#invalid-enum-values title="Permanent link">¶</a></h2> <p>Enums can hold any integer value their underlying type supports, not just defined members. This occurs when:</p> <ul> <li>Deserializing data from older/newer versions</li> <li>Casting user input or external data</li> <li>Data corruption</li> </ul> <h3 id=pattern-cast-invalid-integer-to-enum>Pattern: Cast Invalid Integer to Enum<a class=headerlink href=#pattern-cast-invalid-integer-to-enum title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-10-1>1</a></span>
<span class=normal><a href=#__codelineno-10-2>2</a></span>
<span class=normal><a href=#__codelineno-10-3>3</a></span>
<span class=normal><a href=#__codelineno-10-4>4</a></span>
<span class=normal><a href=#__codelineno-10-5>5</a></span>
<span class=normal><a href=#__codelineno-10-6>6</a></span>
<span class=normal><a href=#__codelineno-10-7>7</a></span>
<span class=normal><a href=#__codelineno-10-8>8</a></span>
<span class=normal><a href=#__codelineno-10-9>9</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-10-1><a id=__codelineno-10-1 name=__codelineno-10-1></a><span class=na>[Test]</span>
</span><span id=__span-10-2><a id=__codelineno-10-2 name=__codelineno-10-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>DisplayNameWithInvalidEnumValue</span><span class=p>()</span>
</span><span id=__span-10-3><a id=__codelineno-10-3 name=__codelineno-10-3></a><span class=p>{</span>
</span><span id=__span-10-4><a id=__codelineno-10-4 name=__codelineno-10-4></a><span class=w> </span><span class=n>TestEnum</span><span class=w> </span><span class=n>invalidValue</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>(</span><span class=n>TestEnum</span><span class=p>)</span><span class=mi>999</span><span class=p>;</span>
</span><span id=__span-10-5><a id=__codelineno-10-5 name=__codelineno-10-5></a>
</span><span id=__span-10-6><a id=__codelineno-10-6 name=__codelineno-10-6></a><span class=w> </span><span class=kt>string</span><span class=w> </span><span class=n>displayName</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>invalidValue</span><span class=p>.</span><span class=n>ToDisplayName</span><span class=p>();</span>
</span><span id=__span-10-7><a id=__codelineno-10-7 name=__codelineno-10-7></a>
</span><span id=__span-10-8><a id=__codelineno-10-8 name=__codelineno-10-8></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsNotEmpty</span><span class=p>(</span><span class=n>displayName</span><span class=p>,</span><span class=w> </span><span class=s>"Should return some string, not crash"</span><span class=p>);</span>
</span><span id=__span-10-9><a id=__codelineno-10-9 name=__codelineno-10-9></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-test-all-enum-operations-with-invalid-values>Pattern: Test All Enum Operations with Invalid Values<a class=headerlink href=#pattern-test-all-enum-operations-with-invalid-values title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-11-1> 1</a></span>
<span class=normal><a href=#__codelineno-11-2> 2</a></span>
<span class=normal><a href=#__codelineno-11-3> 3</a></span>
<span class=normal><a href=#__codelineno-11-4> 4</a></span>
<span class=normal><a href=#__codelineno-11-5> 5</a></span>
<span class=normal><a href=#__codelineno-11-6> 6</a></span>
<span class=normal><a href=#__codelineno-11-7> 7</a></span>
<span class=normal><a href=#__codelineno-11-8> 8</a></span>
<span class=normal><a href=#__codelineno-11-9> 9</a></span>
<span class=normal><a href=#__codelineno-11-10>10</a></span>
<span class=normal><a href=#__codelineno-11-11>11</a></span>
<span class=normal><a href=#__codelineno-11-12>12</a></span>
<span class=normal><a href=#__codelineno-11-13>13</a></span>
<span class=normal><a href=#__codelineno-11-14>14</a></span>
<span class=normal><a href=#__codelineno-11-15>15</a></span>
<span class=normal><a href=#__codelineno-11-16>16</a></span>
<span class=normal><a href=#__codelineno-11-17>17</a></span>
<span class=normal><a href=#__codelineno-11-18>18</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-11-1><a id=__codelineno-11-1 name=__codelineno-11-1></a><span class=na>[Test]</span>
</span><span id=__span-11-2><a id=__codelineno-11-2 name=__codelineno-11-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>CachedNameWithInvalidEnumValue</span><span class=p>()</span>
</span><span id=__span-11-3><a id=__codelineno-11-3 name=__codelineno-11-3></a><span class=p>{</span>
</span><span id=__span-11-4><a id=__codelineno-11-4 name=__codelineno-11-4></a><span class=w> </span><span class=n>TestEnum</span><span class=w> </span><span class=n>invalidValue</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>(</span><span class=n>TestEnum</span><span class=p>)</span><span class=mi>999</span><span class=p>;</span>
</span><span id=__span-11-5><a id=__codelineno-11-5 name=__codelineno-11-5></a>
</span><span id=__span-11-6><a id=__codelineno-11-6 name=__codelineno-11-6></a><span class=w> </span><span class=kt>string</span><span class=w> </span><span class=n>cachedName</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>invalidValue</span><span class=p>.</span><span class=n>ToCachedName</span><span class=p>();</span>
</span><span id=__span-11-7><a id=__codelineno-11-7 name=__codelineno-11-7></a>
</span><span id=__span-11-8><a id=__codelineno-11-8 name=__codelineno-11-8></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsNotEmpty</span><span class=p>(</span><span class=n>cachedName</span><span class=p>);</span>
</span><span id=__span-11-9><a id=__codelineno-11-9 name=__codelineno-11-9></a><span class=p>}</span>
</span><span id=__span-11-10><a id=__codelineno-11-10 name=__codelineno-11-10></a>
</span><span id=__span-11-11><a id=__codelineno-11-11 name=__codelineno-11-11></a><span class=na>[Test]</span>
</span><span id=__span-11-12><a id=__codelineno-11-12 name=__codelineno-11-12></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>HasFlagNoAllocWithInvalidEnumValue</span><span class=p>()</span>
</span><span id=__span-11-13><a id=__codelineno-11-13 name=__codelineno-11-13></a><span class=p>{</span>
</span><span id=__span-11-14><a id=__codelineno-11-14 name=__codelineno-11-14></a><span class=w> </span><span class=n>TestEnum</span><span class=w> </span><span class=n>invalidValue</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>(</span><span class=n>TestEnum</span><span class=p>)</span><span class=mi>999</span><span class=p>;</span>
</span><span id=__span-11-15><a id=__codelineno-11-15 name=__codelineno-11-15></a>
</span><span id=__span-11-16><a id=__codelineno-11-16 name=__codelineno-11-16></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>invalidValue</span><span class=p>.</span><span class=n>HasFlagNoAlloc</span><span class=p>(</span><span class=n>invalidValue</span><span class=p>));</span>
</span><span id=__span-11-17><a id=__codelineno-11-17 name=__codelineno-11-17></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsFalse</span><span class=p>(</span><span class=n>TestEnum</span><span class=p>.</span><span class=n>First</span><span class=p>.</span><span class=n>HasFlagNoAlloc</span><span class=p>(</span><span class=n>invalidValue</span><span class=p>));</span>
</span><span id=__span-11-18><a id=__codelineno-11-18 name=__codelineno-11-18></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=real-example-enumextensiontestscs>Real Example: EnumExtensionTests.cs<a class=headerlink href=#real-example-enumextensiontestscs title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/Extensions/EnumExtensionTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-12-1> 1</a></span>
<span class=normal><a href=#__codelineno-12-2> 2</a></span>
<span class=normal><a href=#__codelineno-12-3> 3</a></span>
<span class=normal><a href=#__codelineno-12-4> 4</a></span>
<span class=normal><a href=#__codelineno-12-5> 5</a></span>
<span class=normal><a href=#__codelineno-12-6> 6</a></span>
<span class=normal><a href=#__codelineno-12-7> 7</a></span>
<span class=normal><a href=#__codelineno-12-8> 8</a></span>
<span class=normal><a href=#__codelineno-12-9> 9</a></span>
<span class=normal><a href=#__codelineno-12-10>10</a></span>
<span class=normal><a href=#__codelineno-12-11>11</a></span>
<span class=normal><a href=#__codelineno-12-12>12</a></span>
<span class=normal><a href=#__codelineno-12-13>13</a></span>
<span class=normal><a href=#__codelineno-12-14>14</a></span>
<span class=normal><a href=#__codelineno-12-15>15</a></span>
<span class=normal><a href=#__codelineno-12-16>16</a></span>
<span class=normal><a href=#__codelineno-12-17>17</a></span>
<span class=normal><a href=#__codelineno-12-18>18</a></span>
<span class=normal><a href=#__codelineno-12-19>19</a></span>
<span class=normal><a href=#__codelineno-12-20>20</a></span>
<span class=normal><a href=#__codelineno-12-21>21</a></span>
<span class=normal><a href=#__codelineno-12-22>22</a></span>
<span class=normal><a href=#__codelineno-12-23>23</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-12-1><a id=__codelineno-12-1 name=__codelineno-12-1></a><span class=na>[Test]</span>
</span><span id=__span-12-2><a id=__codelineno-12-2 name=__codelineno-12-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>DisplayNameWithInvalidEnumValue</span><span class=p>()</span>
</span><span id=__span-12-3><a id=__codelineno-12-3 name=__codelineno-12-3></a><span class=p>{</span>
</span><span id=__span-12-4><a id=__codelineno-12-4 name=__codelineno-12-4></a><span class=w> </span><span class=n>TestEnum</span><span class=w> </span><span class=n>invalidValue</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>(</span><span class=n>TestEnum</span><span class=p>)</span><span class=mi>999</span><span class=p>;</span>
</span><span id=__span-12-5><a id=__codelineno-12-5 name=__codelineno-12-5></a><span class=w> </span><span class=kt>string</span><span class=w> </span><span class=n>displayName</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>invalidValue</span><span class=p>.</span><span class=n>ToDisplayName</span><span class=p>();</span>
</span><span id=__span-12-6><a id=__codelineno-12-6 name=__codelineno-12-6></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsNotEmpty</span><span class=p>(</span><span class=n>displayName</span><span class=p>);</span>
</span><span id=__span-12-7><a id=__codelineno-12-7 name=__codelineno-12-7></a><span class=p>}</span>
</span><span id=__span-12-8><a id=__codelineno-12-8 name=__codelineno-12-8></a>
</span><span id=__span-12-9><a id=__codelineno-12-9 name=__codelineno-12-9></a><span class=na>[Test]</span>
</span><span id=__span-12-10><a id=__codelineno-12-10 name=__codelineno-12-10></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>CachedNameWithInvalidEnumValue</span><span class=p>()</span>
</span><span id=__span-12-11><a id=__codelineno-12-11 name=__codelineno-12-11></a><span class=p>{</span>
</span><span id=__span-12-12><a id=__codelineno-12-12 name=__codelineno-12-12></a><span class=w> </span><span class=n>TestEnum</span><span class=w> </span><span class=n>invalidValue</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>(</span><span class=n>TestEnum</span><span class=p>)</span><span class=mi>999</span><span class=p>;</span>
</span><span id=__span-12-13><a id=__codelineno-12-13 name=__codelineno-12-13></a><span class=w> </span><span class=kt>string</span><span class=w> </span><span class=n>cachedName</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>invalidValue</span><span class=p>.</span><span class=n>ToCachedName</span><span class=p>();</span>
</span><span id=__span-12-14><a id=__codelineno-12-14 name=__codelineno-12-14></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsNotEmpty</span><span class=p>(</span><span class=n>cachedName</span><span class=p>);</span>
</span><span id=__span-12-15><a id=__codelineno-12-15 name=__codelineno-12-15></a><span class=p>}</span>
</span><span id=__span-12-16><a id=__codelineno-12-16 name=__codelineno-12-16></a>
</span><span id=__span-12-17><a id=__codelineno-12-17 name=__codelineno-12-17></a><span class=na>[Test]</span>
</span><span id=__span-12-18><a id=__codelineno-12-18 name=__codelineno-12-18></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>HasFlagNoAllocWithInvalidEnumValue</span><span class=p>()</span>
</span><span id=__span-12-19><a id=__codelineno-12-19 name=__codelineno-12-19></a><span class=p>{</span>
</span><span id=__span-12-20><a id=__codelineno-12-20 name=__codelineno-12-20></a><span class=w> </span><span class=n>TestEnum</span><span class=w> </span><span class=n>invalidValue</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>(</span><span class=n>TestEnum</span><span class=p>)</span><span class=mi>999</span><span class=p>;</span>
</span><span id=__span-12-21><a id=__codelineno-12-21 name=__codelineno-12-21></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>invalidValue</span><span class=p>.</span><span class=n>HasFlagNoAlloc</span><span class=p>(</span><span class=n>invalidValue</span><span class=p>));</span>
</span><span id=__span-12-22><a id=__codelineno-12-22 name=__codelineno-12-22></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsFalse</span><span class=p>(</span><span class=n>TestEnum</span><span class=p>.</span><span class=n>First</span><span class=p>.</span><span class=n>HasFlagNoAlloc</span><span class=p>(</span><span class=n>invalidValue</span><span class=p>));</span>
</span><span id=__span-12-23><a id=__codelineno-12-23 name=__codelineno-12-23></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-invalid-serializationtype>Pattern: Invalid SerializationType<a class=headerlink href=#pattern-invalid-serializationtype title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-13-1> 1</a></span>
<span class=normal><a href=#__codelineno-13-2> 2</a></span>
<span class=normal><a href=#__codelineno-13-3> 3</a></span>
<span class=normal><a href=#__codelineno-13-4> 4</a></span>
<span class=normal><a href=#__codelineno-13-5> 5</a></span>
<span class=normal><a href=#__codelineno-13-6> 6</a></span>
<span class=normal><a href=#__codelineno-13-7> 7</a></span>
<span class=normal><a href=#__codelineno-13-8> 8</a></span>
<span class=normal><a href=#__codelineno-13-9> 9</a></span>
<span class=normal><a href=#__codelineno-13-10>10</a></span>
<span class=normal><a href=#__codelineno-13-11>11</a></span>
<span class=normal><a href=#__codelineno-13-12>12</a></span>
<span class=normal><a href=#__codelineno-13-13>13</a></span>
<span class=normal><a href=#__codelineno-13-14>14</a></span>
<span class=normal><a href=#__codelineno-13-15>15</a></span>
<span class=normal><a href=#__codelineno-13-16>16</a></span>
<span class=normal><a href=#__codelineno-13-17>17</a></span>
<span class=normal><a href=#__codelineno-13-18>18</a></span>
<span class=normal><a href=#__codelineno-13-19>19</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-13-1><a id=__codelineno-13-1 name=__codelineno-13-1></a><span class=na>[Test]</span>
</span><span id=__span-13-2><a id=__codelineno-13-2 name=__codelineno-13-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>GenericSerializeInvalidSerializationTypeThrowsException</span><span class=p>()</span>
</span><span id=__span-13-3><a id=__codelineno-13-3 name=__codelineno-13-3></a><span class=p>{</span>
</span><span id=__span-13-4><a id=__codelineno-13-4 name=__codelineno-13-4></a><span class=w> </span><span class=n>TestMessage</span><span class=w> </span><span class=n>msg</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>()</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=n>Id</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>1</span><span class=p>,</span><span class=w> </span><span class=n>Name</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=s>"Test"</span><span class=w> </span><span class=p>};</span>
</span><span id=__span-13-5><a id=__codelineno-13-5 name=__codelineno-13-5></a>
</span><span id=__span-13-6><a id=__codelineno-13-6 name=__codelineno-13-6></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>InvalidEnumArgumentException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-13-7><a id=__codelineno-13-7 name=__codelineno-13-7></a><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>Serialize</span><span class=p>(</span><span class=n>msg</span><span class=p>,</span><span class=w> </span><span class=p>(</span><span class=n>SerializationType</span><span class=p>)</span><span class=mi>999</span><span class=p>)</span>
</span><span id=__span-13-8><a id=__codelineno-13-8 name=__codelineno-13-8></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-13-9><a id=__codelineno-13-9 name=__codelineno-13-9></a><span class=p>}</span>
</span><span id=__span-13-10><a id=__codelineno-13-10 name=__codelineno-13-10></a>
</span><span id=__span-13-11><a id=__codelineno-13-11 name=__codelineno-13-11></a><span class=na>[Test]</span>
</span><span id=__span-13-12><a id=__codelineno-13-12 name=__codelineno-13-12></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>GenericDeserializeInvalidSerializationTypeThrowsException</span><span class=p>()</span>
</span><span id=__span-13-13><a id=__codelineno-13-13 name=__codelineno-13-13></a><span class=p>{</span>
</span><span id=__span-13-14><a id=__codelineno-13-14 name=__codelineno-13-14></a><span class=w> </span><span class=kt>byte</span><span class=p>[]</span><span class=w> </span><span class=n>data</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=mi>1</span><span class=p>,</span><span class=w> </span><span class=mi>2</span><span class=p>,</span><span class=w> </span><span class=mi>3</span><span class=w> </span><span class=p>};</span>
</span><span id=__span-13-15><a id=__codelineno-13-15 name=__codelineno-13-15></a>
</span><span id=__span-13-16><a id=__codelineno-13-16 name=__codelineno-13-16></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>InvalidEnumArgumentException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-13-17><a id=__codelineno-13-17 name=__codelineno-13-17></a><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>Deserialize</span><span class=o><</span><span class=n>TestMessage</span><span class=o>></span><span class=p>(</span><span class=n>data</span><span class=p>,</span><span class=w> </span><span class=p>(</span><span class=n>SerializationType</span><span class=p>)</span><span class=mi>999</span><span class=p>)</span>
</span><span id=__span-13-18><a id=__codelineno-13-18 name=__codelineno-13-18></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-13-19><a id=__codelineno-13-19 name=__codelineno-13-19></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-flags-enum-with-all-bits-set>Pattern: Flags Enum with All Bits Set<a class=headerlink href=#pattern-flags-enum-with-all-bits-set title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-14-1> 1</a></span>
<span class=normal><a href=#__codelineno-14-2> 2</a></span>
<span class=normal><a href=#__codelineno-14-3> 3</a></span>
<span class=normal><a href=#__codelineno-14-4> 4</a></span>
<span class=normal><a href=#__codelineno-14-5> 5</a></span>
<span class=normal><a href=#__codelineno-14-6> 6</a></span>
<span class=normal><a href=#__codelineno-14-7> 7</a></span>
<span class=normal><a href=#__codelineno-14-8> 8</a></span>
<span class=normal><a href=#__codelineno-14-9> 9</a></span>
<span class=normal><a href=#__codelineno-14-10>10</a></span>
<span class=normal><a href=#__codelineno-14-11>11</a></span>
<span class=normal><a href=#__codelineno-14-12>12</a></span>
<span class=normal><a href=#__codelineno-14-13>13</a></span>
<span class=normal><a href=#__codelineno-14-14>14</a></span>
<span class=normal><a href=#__codelineno-14-15>15</a></span>
<span class=normal><a href=#__codelineno-14-16>16</a></span>
<span class=normal><a href=#__codelineno-14-17>17</a></span>
<span class=normal><a href=#__codelineno-14-18>18</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-14-1><a id=__codelineno-14-1 name=__codelineno-14-1></a><span class=na>[Test]</span>
</span><span id=__span-14-2><a id=__codelineno-14-2 name=__codelineno-14-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>FlagsEnumShowsWhenAllFlagsSetAndExpectedIsSubset</span><span class=p>()</span>
</span><span id=__span-14-3><a id=__codelineno-14-3 name=__codelineno-14-3></a><span class=p>{</span>
</span><span id=__span-14-4><a id=__codelineno-14-4 name=__codelineno-14-4></a><span class=w> </span><span class=n>OdinShowIfFlagsTarget</span><span class=w> </span><span class=n>target</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>CreateScriptableObject</span><span class=o><</span><span class=n>OdinShowIfFlagsTarget</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-14-5><a id=__codelineno-14-5 name=__codelineno-14-5></a><span class=w> </span><span class=n>target</span><span class=p>.</span><span class=n>flags</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>(</span><span class=n>TestFlagsEnum</span><span class=p>)(</span><span class=o>-</span><span class=mi>1</span><span class=p>);</span><span class=w> </span><span class=c1>// All bits set</span>
</span><span id=__span-14-6><a id=__codelineno-14-6 name=__codelineno-14-6></a>
</span><span id=__span-14-7><a id=__codelineno-14-7 name=__codelineno-14-7></a><span class=w> </span><span class=p>(</span><span class=kt>bool</span><span class=w> </span><span class=n>success</span><span class=p>,</span><span class=w> </span><span class=kt>bool</span><span class=w> </span><span class=n>shouldShow</span><span class=p>)</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>EvaluateCondition</span><span class=p>(</span>
</span><span id=__span-14-8><a id=__codelineno-14-8 name=__codelineno-14-8></a><span class=w> </span><span class=n>target</span><span class=p>,</span>
</span><span id=__span-14-9><a id=__codelineno-14-9 name=__codelineno-14-9></a><span class=w> </span><span class=k>nameof</span><span class=p>(</span><span class=n>OdinShowIfFlagsTarget</span><span class=p>.</span><span class=n>flags</span><span class=p>),</span>
</span><span id=__span-14-10><a id=__codelineno-14-10 name=__codelineno-14-10></a><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>WShowIfAttribute</span><span class=p>(</span>
</span><span id=__span-14-11><a id=__codelineno-14-11 name=__codelineno-14-11></a><span class=w> </span><span class=k>nameof</span><span class=p>(</span><span class=n>OdinShowIfFlagsTarget</span><span class=p>.</span><span class=n>flags</span><span class=p>),</span>
</span><span id=__span-14-12><a id=__codelineno-14-12 name=__codelineno-14-12></a><span class=w> </span><span class=n>expectedValues</span><span class=p>:</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=kt>object</span><span class=p>[]</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=n>TestFlagsEnum</span><span class=p>.</span><span class=n>FlagA</span><span class=w> </span><span class=o>|</span><span class=w> </span><span class=n>TestFlagsEnum</span><span class=p>.</span><span class=n>FlagB</span><span class=w> </span><span class=p>}</span>
</span><span id=__span-14-13><a id=__codelineno-14-13 name=__codelineno-14-13></a><span class=w> </span><span class=p>)</span>
</span><span id=__span-14-14><a id=__codelineno-14-14 name=__codelineno-14-14></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-14-15><a id=__codelineno-14-15 name=__codelineno-14-15></a>
</span><span id=__span-14-16><a id=__codelineno-14-16 name=__codelineno-14-16></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>That</span><span class=p>(</span><span class=n>success</span><span class=p>,</span><span class=w> </span><span class=n>Is</span><span class=p>.</span><span class=n>True</span><span class=p>);</span>
</span><span id=__span-14-17><a id=__codelineno-14-17 name=__codelineno-14-17></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>That</span><span class=p>(</span><span class=n>shouldShow</span><span class=p>,</span><span class=w> </span><span class=n>Is</span><span class=p>.</span><span class=n>True</span><span class=p>,</span><span class=w> </span><span class=s>"Field should show when all flags set and expected is subset"</span><span class=p>);</span>
</span><span id=__span-14-18><a id=__codelineno-14-18 name=__codelineno-14-18></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h2 id=overflow-conditions>Overflow Conditions<a class=headerlink href=#overflow-conditions title="Permanent link">¶</a></h2> <p>Test behavior at the boundaries of numeric types to catch overflow, underflow, and precision issues.</p> <h3 id=pattern-extreme-numeric-values>Pattern: Extreme Numeric Values<a class=headerlink href=#pattern-extreme-numeric-values title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-15-1> 1</a></span>
<span class=normal><a href=#__codelineno-15-2> 2</a></span>
<span class=normal><a href=#__codelineno-15-3> 3</a></span>
<span class=normal><a href=#__codelineno-15-4> 4</a></span>
<span class=normal><a href=#__codelineno-15-5> 5</a></span>
<span class=normal><a href=#__codelineno-15-6> 6</a></span>
<span class=normal><a href=#__codelineno-15-7> 7</a></span>
<span class=normal><a href=#__codelineno-15-8> 8</a></span>
<span class=normal><a href=#__codelineno-15-9> 9</a></span>
<span class=normal><a href=#__codelineno-15-10>10</a></span>
<span class=normal><a href=#__codelineno-15-11>11</a></span>
<span class=normal><a href=#__codelineno-15-12>12</a></span>
<span class=normal><a href=#__codelineno-15-13>13</a></span>
<span class=normal><a href=#__codelineno-15-14>14</a></span>
<span class=normal><a href=#__codelineno-15-15>15</a></span>
<span class=normal><a href=#__codelineno-15-16>16</a></span>
<span class=normal><a href=#__codelineno-15-17>17</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-15-1><a id=__codelineno-15-1 name=__codelineno-15-1></a><span class=na>[Test]</span>
</span><span id=__span-15-2><a id=__codelineno-15-2 name=__codelineno-15-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>BinaryRoundTripComplexObjectAllFieldsCorrect</span><span class=p>()</span>
</span><span id=__span-15-3><a id=__codelineno-15-3 name=__codelineno-15-3></a><span class=p>{</span>
</span><span id=__span-15-4><a id=__codelineno-15-4 name=__codelineno-15-4></a><span class=w> </span><span class=n>ComplexMessage</span><span class=w> </span><span class=n>msg</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>()</span>
</span><span id=__span-15-5><a id=__codelineno-15-5 name=__codelineno-15-5></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-15-6><a id=__codelineno-15-6 name=__codelineno-15-6></a><span class=w> </span><span class=n>Integer</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=kt>int</span><span class=p>.</span><span class=n>MaxValue</span><span class=p>,</span>
</span><span id=__span-15-7><a id=__codelineno-15-7 name=__codelineno-15-7></a><span class=w> </span><span class=n>Double</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Math</span><span class=p>.</span><span class=n>PI</span><span class=p>,</span>
</span><span id=__span-15-8><a id=__codelineno-15-8 name=__codelineno-15-8></a><span class=w> </span><span class=n>Text</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=s>"Complex test with unicode"</span><span class=p>,</span>
</span><span id=__span-15-9><a id=__codelineno-15-9 name=__codelineno-15-9></a><span class=w> </span><span class=n>Data</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=kt>byte</span><span class=p>[]</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=mi>1</span><span class=p>,</span><span class=w> </span><span class=mi>2</span><span class=p>,</span><span class=w> </span><span class=mi>3</span><span class=p>,</span><span class=w> </span><span class=mi>255</span><span class=p>,</span><span class=w> </span><span class=mi>0</span><span class=p>,</span><span class=w> </span><span class=mi>128</span><span class=w> </span><span class=p>},</span>
</span><span id=__span-15-10><a id=__codelineno-15-10 name=__codelineno-15-10></a><span class=w> </span><span class=p>};</span>
</span><span id=__span-15-11><a id=__codelineno-15-11 name=__codelineno-15-11></a>
</span><span id=__span-15-12><a id=__codelineno-15-12 name=__codelineno-15-12></a><span class=w> </span><span class=kt>byte</span><span class=p>[]</span><span class=w> </span><span class=n>serialized</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>BinarySerialize</span><span class=p>(</span><span class=n>msg</span><span class=p>);</span>
</span><span id=__span-15-13><a id=__codelineno-15-13 name=__codelineno-15-13></a><span class=w> </span><span class=n>ComplexMessage</span><span class=w> </span><span class=n>deserialized</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>BinaryDeserialize</span><span class=o><</span><span class=n>ComplexMessage</span><span class=o>></span><span class=p>(</span><span class=n>serialized</span><span class=p>);</span>
</span><span id=__span-15-14><a id=__codelineno-15-14 name=__codelineno-15-14></a>
</span><span id=__span-15-15><a id=__codelineno-15-15 name=__codelineno-15-15></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>msg</span><span class=p>.</span><span class=n>Integer</span><span class=p>,</span><span class=w> </span><span class=n>deserialized</span><span class=p>.</span><span class=n>Integer</span><span class=p>);</span>
</span><span id=__span-15-16><a id=__codelineno-15-16 name=__codelineno-15-16></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>msg</span><span class=p>.</span><span class=n>Double</span><span class=p>,</span><span class=w> </span><span class=n>deserialized</span><span class=p>.</span><span class=n>Double</span><span class=p>);</span>
</span><span id=__span-15-17><a id=__codelineno-15-17 name=__codelineno-15-17></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-edge-case-values-via-testcasesource>Pattern: Edge Case Values via TestCaseSource<a class=headerlink href=#pattern-edge-case-values-via-testcasesource title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-16-1> 1</a></span>
<span class=normal><a href=#__codelineno-16-2> 2</a></span>
<span class=normal><a href=#__codelineno-16-3> 3</a></span>
<span class=normal><a href=#__codelineno-16-4> 4</a></span>
<span class=normal><a href=#__codelineno-16-5> 5</a></span>
<span class=normal><a href=#__codelineno-16-6> 6</a></span>
<span class=normal><a href=#__codelineno-16-7> 7</a></span>
<span class=normal><a href=#__codelineno-16-8> 8</a></span>
<span class=normal><a href=#__codelineno-16-9> 9</a></span>
<span class=normal><a href=#__codelineno-16-10>10</a></span>
<span class=normal><a href=#__codelineno-16-11>11</a></span>
<span class=normal><a href=#__codelineno-16-12>12</a></span>
<span class=normal><a href=#__codelineno-16-13>13</a></span>
<span class=normal><a href=#__codelineno-16-14>14</a></span>
<span class=normal><a href=#__codelineno-16-15>15</a></span>
<span class=normal><a href=#__codelineno-16-16>16</a></span>
<span class=normal><a href=#__codelineno-16-17>17</a></span>
<span class=normal><a href=#__codelineno-16-18>18</a></span>
<span class=normal><a href=#__codelineno-16-19>19</a></span>
<span class=normal><a href=#__codelineno-16-20>20</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-16-1><a id=__codelineno-16-1 name=__codelineno-16-1></a><span class=k>private</span><span class=w> </span><span class=k>static</span><span class=w> </span><span class=n>IEnumerable</span><span class=o><</span><span class=n>TestCaseData</span><span class=o>></span><span class=w> </span><span class=n>EdgeCaseTestData</span><span class=p>()</span>
</span><span id=__span-16-2><a id=__codelineno-16-2 name=__codelineno-16-2></a><span class=p>{</span>
</span><span id=__span-16-3><a id=__codelineno-16-3 name=__codelineno-16-3></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=k>new</span><span class=p>[]</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=kt>int</span><span class=p>.</span><span class=n>MaxValue</span><span class=w> </span><span class=p>},</span><span class=w> </span><span class=kt>int</span><span class=p>.</span><span class=n>MaxValue</span><span class=p>)</span>
</span><span id=__span-16-4><a id=__codelineno-16-4 name=__codelineno-16-4></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"Input.MaxValue.HandlesCorrectly"</span><span class=p>);</span>
</span><span id=__span-16-5><a id=__codelineno-16-5 name=__codelineno-16-5></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=k>new</span><span class=p>[]</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=kt>int</span><span class=p>.</span><span class=n>MinValue</span><span class=w> </span><span class=p>},</span><span class=w> </span><span class=kt>int</span><span class=p>.</span><span class=n>MinValue</span><span class=p>)</span>
</span><span id=__span-16-6><a id=__codelineno-16-6 name=__codelineno-16-6></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"Input.MinValue.HandlesCorrectly"</span><span class=p>);</span>
</span><span id=__span-16-7><a id=__codelineno-16-7 name=__codelineno-16-7></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=k>new</span><span class=p>[]</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=mi>0</span><span class=w> </span><span class=p>},</span><span class=w> </span><span class=mi>0</span><span class=p>)</span>
</span><span id=__span-16-8><a id=__codelineno-16-8 name=__codelineno-16-8></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"Input.Zero.ReturnsZero"</span><span class=p>);</span>
</span><span id=__span-16-9><a id=__codelineno-16-9 name=__codelineno-16-9></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=k>new</span><span class=p>[]</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=o>-</span><span class=mi>1</span><span class=w> </span><span class=p>},</span><span class=w> </span><span class=o>-</span><span class=mi>1</span><span class=p>)</span>
</span><span id=__span-16-10><a id=__codelineno-16-10 name=__codelineno-16-10></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"Input.Negative.HandlesCorrectly"</span><span class=p>);</span>
</span><span id=__span-16-11><a id=__codelineno-16-11 name=__codelineno-16-11></a><span class=p>}</span>
</span><span id=__span-16-12><a id=__codelineno-16-12 name=__codelineno-16-12></a>
</span><span id=__span-16-13><a id=__codelineno-16-13 name=__codelineno-16-13></a><span class=na>[Test]</span>
</span><span id=__span-16-14><a id=__codelineno-16-14 name=__codelineno-16-14></a><span class=na>[TestCaseSource(nameof(EdgeCaseTestData))]</span>
</span><span id=__span-16-15><a id=__codelineno-16-15 name=__codelineno-16-15></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProcessHandlesEdgeCases</span><span class=p>(</span><span class=kt>int</span><span class=p>[]</span><span class=w> </span><span class=n>input</span><span class=p>,</span><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>expected</span><span class=p>)</span>
</span><span id=__span-16-16><a id=__codelineno-16-16 name=__codelineno-16-16></a><span class=p>{</span>
</span><span id=__span-16-17><a id=__codelineno-16-17 name=__codelineno-16-17></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>MyProcessor</span><span class=p>.</span><span class=n>Process</span><span class=p>(</span><span class=n>input</span><span class=p>);</span>
</span><span id=__span-16-18><a id=__codelineno-16-18 name=__codelineno-16-18></a>
</span><span id=__span-16-19><a id=__codelineno-16-19 name=__codelineno-16-19></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>expected</span><span class=p>,</span><span class=w> </span><span class=n>result</span><span class=p>);</span>
</span><span id=__span-16-20><a id=__codelineno-16-20 name=__codelineno-16-20></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=real-example-serializeradditionaltestscs>Real Example: SerializerAdditionalTests.cs<a class=headerlink href=#real-example-serializeradditionaltestscs title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/Serialization/SerializerAdditionalTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-17-1> 1</a></span>
<span class=normal><a href=#__codelineno-17-2> 2</a></span>
<span class=normal><a href=#__codelineno-17-3> 3</a></span>
<span class=normal><a href=#__codelineno-17-4> 4</a></span>
<span class=normal><a href=#__codelineno-17-5> 5</a></span>
<span class=normal><a href=#__codelineno-17-6> 6</a></span>
<span class=normal><a href=#__codelineno-17-7> 7</a></span>
<span class=normal><a href=#__codelineno-17-8> 8</a></span>
<span class=normal><a href=#__codelineno-17-9> 9</a></span>
<span class=normal><a href=#__codelineno-17-10>10</a></span>
<span class=normal><a href=#__codelineno-17-11>11</a></span>
<span class=normal><a href=#__codelineno-17-12>12</a></span>
<span class=normal><a href=#__codelineno-17-13>13</a></span>
<span class=normal><a href=#__codelineno-17-14>14</a></span>
<span class=normal><a href=#__codelineno-17-15>15</a></span>
<span class=normal><a href=#__codelineno-17-16>16</a></span>
<span class=normal><a href=#__codelineno-17-17>17</a></span>
<span class=normal><a href=#__codelineno-17-18>18</a></span>
<span class=normal><a href=#__codelineno-17-19>19</a></span>
<span class=normal><a href=#__codelineno-17-20>20</a></span>
<span class=normal><a href=#__codelineno-17-21>21</a></span>
<span class=normal><a href=#__codelineno-17-22>22</a></span>
<span class=normal><a href=#__codelineno-17-23>23</a></span>
<span class=normal><a href=#__codelineno-17-24>24</a></span>
<span class=normal><a href=#__codelineno-17-25>25</a></span>
<span class=normal><a href=#__codelineno-17-26>26</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-17-1><a id=__codelineno-17-1 name=__codelineno-17-1></a><span class=na>[Test]</span>
</span><span id=__span-17-2><a id=__codelineno-17-2 name=__codelineno-17-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>GenericSerializeWithAllTypesEdgeCaseData</span><span class=p>()</span>
</span><span id=__span-17-3><a id=__codelineno-17-3 name=__codelineno-17-3></a><span class=p>{</span>
</span><span id=__span-17-4><a id=__codelineno-17-4 name=__codelineno-17-4></a><span class=w> </span><span class=n>ComplexMessage</span><span class=w> </span><span class=n>msg</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>()</span>
</span><span id=__span-17-5><a id=__codelineno-17-5 name=__codelineno-17-5></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-17-6><a id=__codelineno-17-6 name=__codelineno-17-6></a><span class=w> </span><span class=n>Integer</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=kt>int</span><span class=p>.</span><span class=n>MinValue</span><span class=p>,</span>
</span><span id=__span-17-7><a id=__codelineno-17-7 name=__codelineno-17-7></a><span class=w> </span><span class=n>Double</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=kt>double</span><span class=p>.</span><span class=n>MaxValue</span><span class=p>,</span>
</span><span id=__span-17-8><a id=__codelineno-17-8 name=__codelineno-17-8></a><span class=w> </span><span class=n>Text</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=kt>string</span><span class=p>.</span><span class=n>Empty</span><span class=p>,</span>
</span><span id=__span-17-9><a id=__codelineno-17-9 name=__codelineno-17-9></a><span class=w> </span><span class=n>Data</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=kt>byte</span><span class=p>[]</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=mi>0</span><span class=p>,</span><span class=w> </span><span class=mi>255</span><span class=w> </span><span class=p>},</span>
</span><span id=__span-17-10><a id=__codelineno-17-10 name=__codelineno-17-10></a><span class=w> </span><span class=n>StringList</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=n>List</span><span class=o><</span><span class=kt>string</span><span class=o>></span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=s>""</span><span class=p>,</span><span class=w> </span><span class=s>"test"</span><span class=w> </span><span class=p>},</span>
</span><span id=__span-17-11><a id=__codelineno-17-11 name=__codelineno-17-11></a><span class=w> </span><span class=n>Dictionary</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=n>Dictionary</span><span class=o><</span><span class=kt>string</span><span class=p>,</span><span class=w> </span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=p>[</span><span class=s>""</span><span class=p>]</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>0</span><span class=p>,</span><span class=w> </span><span class=p>[</span><span class=s>"test"</span><span class=p>]</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=o>-</span><span class=mi>1</span><span class=w> </span><span class=p>},</span>
</span><span id=__span-17-12><a id=__codelineno-17-12 name=__codelineno-17-12></a><span class=w> </span><span class=p>};</span>
</span><span id=__span-17-13><a id=__codelineno-17-13 name=__codelineno-17-13></a>
</span><span id=__span-17-14><a id=__codelineno-17-14 name=__codelineno-17-14></a><span class=w> </span><span class=k>foreach</span><span class=w> </span><span class=p>(</span><span class=n>SerializationType</span><span class=w> </span><span class=n>type</span><span class=w> </span><span class=k>in</span><span class=w> </span><span class=k>new</span><span class=p>[]</span>
</span><span id=__span-17-15><a id=__codelineno-17-15 name=__codelineno-17-15></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-17-16><a id=__codelineno-17-16 name=__codelineno-17-16></a><span class=w> </span><span class=n>SerializationType</span><span class=p>.</span><span class=n>SystemBinary</span><span class=p>,</span>
</span><span id=__span-17-17><a id=__codelineno-17-17 name=__codelineno-17-17></a><span class=w> </span><span class=n>SerializationType</span><span class=p>.</span><span class=n>Protobuf</span><span class=p>,</span>
</span><span id=__span-17-18><a id=__codelineno-17-18 name=__codelineno-17-18></a><span class=w> </span><span class=p>})</span>
</span><span id=__span-17-19><a id=__codelineno-17-19 name=__codelineno-17-19></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-17-20><a id=__codelineno-17-20 name=__codelineno-17-20></a><span class=w> </span><span class=kt>byte</span><span class=p>[]</span><span class=w> </span><span class=n>serialized</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>Serialize</span><span class=p>(</span><span class=n>msg</span><span class=p>,</span><span class=w> </span><span class=n>type</span><span class=p>);</span>
</span><span id=__span-17-21><a id=__codelineno-17-21 name=__codelineno-17-21></a><span class=w> </span><span class=n>ComplexMessage</span><span class=w> </span><span class=n>deserialized</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>Deserialize</span><span class=o><</span><span class=n>ComplexMessage</span><span class=o>></span><span class=p>(</span><span class=n>serialized</span><span class=p>,</span><span class=w> </span><span class=n>type</span><span class=p>);</span>
</span><span id=__span-17-22><a id=__codelineno-17-22 name=__codelineno-17-22></a>
</span><span id=__span-17-23><a id=__codelineno-17-23 name=__codelineno-17-23></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>msg</span><span class=p>.</span><span class=n>Integer</span><span class=p>,</span><span class=w> </span><span class=n>deserialized</span><span class=p>.</span><span class=n>Integer</span><span class=p>,</span><span class=w> </span><span class=s>$"Failed for {type}"</span><span class=p>);</span>
</span><span id=__span-17-24><a id=__codelineno-17-24 name=__codelineno-17-24></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>msg</span><span class=p>.</span><span class=n>Double</span><span class=p>,</span><span class=w> </span><span class=n>deserialized</span><span class=p>.</span><span class=n>Double</span><span class=p>,</span><span class=w> </span><span class=s>$"Failed for {type}"</span><span class=p>);</span>
</span><span id=__span-17-25><a id=__codelineno-17-25 name=__codelineno-17-25></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-17-26><a id=__codelineno-17-26 name=__codelineno-17-26></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h2 id=corrupted-serialization-state>Corrupted Serialization State<a class=headerlink href=#corrupted-serialization-state title="Permanent link">¶</a></h2> <p>Test handling of malformed, truncated, or invalid serialized data.</p> <h3 id=pattern-empty-data>Pattern: Empty Data<a class=headerlink href=#pattern-empty-data title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-18-1> 1</a></span>
<span class=normal><a href=#__codelineno-18-2> 2</a></span>
<span class=normal><a href=#__codelineno-18-3> 3</a></span>
<span class=normal><a href=#__codelineno-18-4> 4</a></span>
<span class=normal><a href=#__codelineno-18-5> 5</a></span>
<span class=normal><a href=#__codelineno-18-6> 6</a></span>
<span class=normal><a href=#__codelineno-18-7> 7</a></span>
<span class=normal><a href=#__codelineno-18-8> 8</a></span>
<span class=normal><a href=#__codelineno-18-9> 9</a></span>
<span class=normal><a href=#__codelineno-18-10>10</a></span>
<span class=normal><a href=#__codelineno-18-11>11</a></span>
<span class=normal><a href=#__codelineno-18-12>12</a></span>
<span class=normal><a href=#__codelineno-18-13>13</a></span>
<span class=normal><a href=#__codelineno-18-14>14</a></span>
<span class=normal><a href=#__codelineno-18-15>15</a></span>
<span class=normal><a href=#__codelineno-18-16>16</a></span>
<span class=normal><a href=#__codelineno-18-17>17</a></span>
<span class=normal><a href=#__codelineno-18-18>18</a></span>
<span class=normal><a href=#__codelineno-18-19>19</a></span>
<span class=normal><a href=#__codelineno-18-20>20</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-18-1><a id=__codelineno-18-1 name=__codelineno-18-1></a><span class=na>[Test]</span>
</span><span id=__span-18-2><a id=__codelineno-18-2 name=__codelineno-18-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>BinaryDeserializeEmptyArrayThrowsException</span><span class=p>()</span>
</span><span id=__span-18-3><a id=__codelineno-18-3 name=__codelineno-18-3></a><span class=p>{</span>
</span><span id=__span-18-4><a id=__codelineno-18-4 name=__codelineno-18-4></a><span class=w> </span><span class=kt>byte</span><span class=p>[]</span><span class=w> </span><span class=n>emptyData</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Array</span><span class=p>.</span><span class=n>Empty</span><span class=o><</span><span class=kt>byte</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-18-5><a id=__codelineno-18-5 name=__codelineno-18-5></a>
</span><span id=__span-18-6><a id=__codelineno-18-6 name=__codelineno-18-6></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>SerializationException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-18-7><a id=__codelineno-18-7 name=__codelineno-18-7></a><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>BinaryDeserialize</span><span class=o><</span><span class=n>TestMessage</span><span class=o>></span><span class=p>(</span><span class=n>emptyData</span><span class=p>)</span>
</span><span id=__span-18-8><a id=__codelineno-18-8 name=__codelineno-18-8></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-18-9><a id=__codelineno-18-9 name=__codelineno-18-9></a><span class=p>}</span>
</span><span id=__span-18-10><a id=__codelineno-18-10 name=__codelineno-18-10></a>
</span><span id=__span-18-11><a id=__codelineno-18-11 name=__codelineno-18-11></a><span class=na>[Test]</span>
</span><span id=__span-18-12><a id=__codelineno-18-12 name=__codelineno-18-12></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProtoDeserializeEmptyArrayReturnsDefaultInstance</span><span class=p>()</span>
</span><span id=__span-18-13><a id=__codelineno-18-13 name=__codelineno-18-13></a><span class=p>{</span>
</span><span id=__span-18-14><a id=__codelineno-18-14 name=__codelineno-18-14></a><span class=w> </span><span class=kt>byte</span><span class=p>[]</span><span class=w> </span><span class=n>emptyData</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Array</span><span class=p>.</span><span class=n>Empty</span><span class=o><</span><span class=kt>byte</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-18-15><a id=__codelineno-18-15 name=__codelineno-18-15></a>
</span><span id=__span-18-16><a id=__codelineno-18-16 name=__codelineno-18-16></a><span class=w> </span><span class=n>TestMessage</span><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>ProtoDeserialize</span><span class=o><</span><span class=n>TestMessage</span><span class=o>></span><span class=p>(</span><span class=n>emptyData</span><span class=p>);</span>
</span><span id=__span-18-17><a id=__codelineno-18-17 name=__codelineno-18-17></a>
</span><span id=__span-18-18><a id=__codelineno-18-18 name=__codelineno-18-18></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>NotNull</span><span class=p>(</span><span class=n>result</span><span class=p>);</span>
</span><span id=__span-18-19><a id=__codelineno-18-19 name=__codelineno-18-19></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=mi>0</span><span class=p>,</span><span class=w> </span><span class=n>result</span><span class=p>.</span><span class=n>Id</span><span class=p>);</span>
</span><span id=__span-18-20><a id=__codelineno-18-20 name=__codelineno-18-20></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-corrupted-data>Pattern: Corrupted Data<a class=headerlink href=#pattern-corrupted-data title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-19-1> 1</a></span>
<span class=normal><a href=#__codelineno-19-2> 2</a></span>
<span class=normal><a href=#__codelineno-19-3> 3</a></span>
<span class=normal><a href=#__codelineno-19-4> 4</a></span>
<span class=normal><a href=#__codelineno-19-5> 5</a></span>
<span class=normal><a href=#__codelineno-19-6> 6</a></span>
<span class=normal><a href=#__codelineno-19-7> 7</a></span>
<span class=normal><a href=#__codelineno-19-8> 8</a></span>
<span class=normal><a href=#__codelineno-19-9> 9</a></span>
<span class=normal><a href=#__codelineno-19-10>10</a></span>
<span class=normal><a href=#__codelineno-19-11>11</a></span>
<span class=normal><a href=#__codelineno-19-12>12</a></span>
<span class=normal><a href=#__codelineno-19-13>13</a></span>
<span class=normal><a href=#__codelineno-19-14>14</a></span>
<span class=normal><a href=#__codelineno-19-15>15</a></span>
<span class=normal><a href=#__codelineno-19-16>16</a></span>
<span class=normal><a href=#__codelineno-19-17>17</a></span>
<span class=normal><a href=#__codelineno-19-18>18</a></span>
<span class=normal><a href=#__codelineno-19-19>19</a></span>
<span class=normal><a href=#__codelineno-19-20>20</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-19-1><a id=__codelineno-19-1 name=__codelineno-19-1></a><span class=na>[Test]</span>
</span><span id=__span-19-2><a id=__codelineno-19-2 name=__codelineno-19-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>BinaryDeserializeCorruptedDataThrowsException</span><span class=p>()</span>
</span><span id=__span-19-3><a id=__codelineno-19-3 name=__codelineno-19-3></a><span class=p>{</span>
</span><span id=__span-19-4><a id=__codelineno-19-4 name=__codelineno-19-4></a><span class=w> </span><span class=kt>byte</span><span class=p>[]</span><span class=w> </span><span class=n>corruptedData</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=mh>0xFF</span><span class=p>,</span><span class=w> </span><span class=mh>0xFF</span><span class=p>,</span><span class=w> </span><span class=mh>0xFF</span><span class=p>,</span><span class=w> </span><span class=mh>0xFF</span><span class=w> </span><span class=p>};</span>
</span><span id=__span-19-5><a id=__codelineno-19-5 name=__codelineno-19-5></a>
</span><span id=__span-19-6><a id=__codelineno-19-6 name=__codelineno-19-6></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>SerializationException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-19-7><a id=__codelineno-19-7 name=__codelineno-19-7></a><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>BinaryDeserialize</span><span class=o><</span><span class=n>TestMessage</span><span class=o>></span><span class=p>(</span><span class=n>corruptedData</span><span class=p>)</span>
</span><span id=__span-19-8><a id=__codelineno-19-8 name=__codelineno-19-8></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-19-9><a id=__codelineno-19-9 name=__codelineno-19-9></a><span class=p>}</span>
</span><span id=__span-19-10><a id=__codelineno-19-10 name=__codelineno-19-10></a>
</span><span id=__span-19-11><a id=__codelineno-19-11 name=__codelineno-19-11></a><span class=na>[Test]</span>
</span><span id=__span-19-12><a id=__codelineno-19-12 name=__codelineno-19-12></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>FileIOReadFromInvalidJsonThrowsException</span><span class=p>()</span>
</span><span id=__span-19-13><a id=__codelineno-19-13 name=__codelineno-19-13></a><span class=p>{</span>
</span><span id=__span-19-14><a id=__codelineno-19-14 name=__codelineno-19-14></a><span class=w> </span><span class=kt>string</span><span class=w> </span><span class=n>filePath</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Path</span><span class=p>.</span><span class=n>Combine</span><span class=p>(</span><span class=n>_tempDirectory</span><span class=p>,</span><span class=w> </span><span class=s>"invalid.json"</span><span class=p>);</span>
</span><span id=__span-19-15><a id=__codelineno-19-15 name=__codelineno-19-15></a><span class=w> </span><span class=n>File</span><span class=p>.</span><span class=n>WriteAllText</span><span class=p>(</span><span class=n>filePath</span><span class=p>,</span><span class=w> </span><span class=s>"{ invalid json content }"</span><span class=p>);</span>
</span><span id=__span-19-16><a id=__codelineno-19-16 name=__codelineno-19-16></a>
</span><span id=__span-19-17><a id=__codelineno-19-17 name=__codelineno-19-17></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>JsonException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-19-18><a id=__codelineno-19-18 name=__codelineno-19-18></a><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>ReadFromJsonFile</span><span class=o><</span><span class=n>TestMessage</span><span class=o>></span><span class=p>(</span><span class=n>filePath</span><span class=p>)</span>
</span><span id=__span-19-19><a id=__codelineno-19-19 name=__codelineno-19-19></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-19-20><a id=__codelineno-19-20 name=__codelineno-19-20></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-null-data>Pattern: Null Data<a class=headerlink href=#pattern-null-data title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-20-1> 1</a></span>
<span class=normal><a href=#__codelineno-20-2> 2</a></span>
<span class=normal><a href=#__codelineno-20-3> 3</a></span>
<span class=normal><a href=#__codelineno-20-4> 4</a></span>
<span class=normal><a href=#__codelineno-20-5> 5</a></span>
<span class=normal><a href=#__codelineno-20-6> 6</a></span>
<span class=normal><a href=#__codelineno-20-7> 7</a></span>
<span class=normal><a href=#__codelineno-20-8> 8</a></span>
<span class=normal><a href=#__codelineno-20-9> 9</a></span>
<span class=normal><a href=#__codelineno-20-10>10</a></span>
<span class=normal><a href=#__codelineno-20-11>11</a></span>
<span class=normal><a href=#__codelineno-20-12>12</a></span>
<span class=normal><a href=#__codelineno-20-13>13</a></span>
<span class=normal><a href=#__codelineno-20-14>14</a></span>
<span class=normal><a href=#__codelineno-20-15>15</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-20-1><a id=__codelineno-20-1 name=__codelineno-20-1></a><span class=na>[Test]</span>
</span><span id=__span-20-2><a id=__codelineno-20-2 name=__codelineno-20-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProtoDeserializeNullDataThrowsException</span><span class=p>()</span>
</span><span id=__span-20-3><a id=__codelineno-20-3 name=__codelineno-20-3></a><span class=p>{</span>
</span><span id=__span-20-4><a id=__codelineno-20-4 name=__codelineno-20-4></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>ProtoException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-20-5><a id=__codelineno-20-5 name=__codelineno-20-5></a><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>ProtoDeserialize</span><span class=o><</span><span class=n>TestMessage</span><span class=o>></span><span class=p>(</span><span class=k>null</span><span class=p>)</span>
</span><span id=__span-20-6><a id=__codelineno-20-6 name=__codelineno-20-6></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-20-7><a id=__codelineno-20-7 name=__codelineno-20-7></a><span class=p>}</span>
</span><span id=__span-20-8><a id=__codelineno-20-8 name=__codelineno-20-8></a>
</span><span id=__span-20-9><a id=__codelineno-20-9 name=__codelineno-20-9></a><span class=na>[Test]</span>
</span><span id=__span-20-10><a id=__codelineno-20-10 name=__codelineno-20-10></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProtoDeserializeWithTypeNullDataThrowsException</span><span class=p>()</span>
</span><span id=__span-20-11><a id=__codelineno-20-11 name=__codelineno-20-11></a><span class=p>{</span>
</span><span id=__span-20-12><a id=__codelineno-20-12 name=__codelineno-20-12></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>ArgumentException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-20-13><a id=__codelineno-20-13 name=__codelineno-20-13></a><span class=w> </span><span class=n>Serializer</span><span class=p>.</span><span class=n>ProtoDeserialize</span><span class=o><</span><span class=kt>object</span><span class=o>></span><span class=p>(</span><span class=k>null</span><span class=p>,</span><span class=w> </span><span class=k>typeof</span><span class=p>(</span><span class=n>TestMessage</span><span class=p>))</span>
</span><span id=__span-20-14><a id=__codelineno-20-14 name=__codelineno-20-14></a><span class=w> </span><span class=p>);</span>
</span><span id=__span-20-15><a id=__codelineno-20-15 name=__codelineno-20-15></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h2 id=concurrent-access-edge-cases>Concurrent Access Edge Cases<a class=headerlink href=#concurrent-access-edge-cases title="Permanent link">¶</a></h2> <p>Multi-threaded code can encounter states that are impossible in single-threaded execution. Unity Helpers uses <code>#if !SINGLE_THREADED</code> conditionals to wrap concurrent tests.</p> <h3 id=pattern-concurrent-operations-do-not-corrupt-state>Pattern: Concurrent Operations Do Not Corrupt State<a class=headerlink href=#pattern-concurrent-operations-do-not-corrupt-state title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-21-1> 1</a></span>
<span class=normal><a href=#__codelineno-21-2> 2</a></span>
<span class=normal><a href=#__codelineno-21-3> 3</a></span>
<span class=normal><a href=#__codelineno-21-4> 4</a></span>
<span class=normal><a href=#__codelineno-21-5> 5</a></span>
<span class=normal><a href=#__codelineno-21-6> 6</a></span>
<span class=normal><a href=#__codelineno-21-7> 7</a></span>
<span class=normal><a href=#__codelineno-21-8> 8</a></span>
<span class=normal><a href=#__codelineno-21-9> 9</a></span>
<span class=normal><a href=#__codelineno-21-10>10</a></span>
<span class=normal><a href=#__codelineno-21-11>11</a></span>
<span class=normal><a href=#__codelineno-21-12>12</a></span>
<span class=normal><a href=#__codelineno-21-13>13</a></span>
<span class=normal><a href=#__codelineno-21-14>14</a></span>
<span class=normal><a href=#__codelineno-21-15>15</a></span>
<span class=normal><a href=#__codelineno-21-16>16</a></span>
<span class=normal><a href=#__codelineno-21-17>17</a></span>
<span class=normal><a href=#__codelineno-21-18>18</a></span>
<span class=normal><a href=#__codelineno-21-19>19</a></span>
<span class=normal><a href=#__codelineno-21-20>20</a></span>
<span class=normal><a href=#__codelineno-21-21>21</a></span>
<span class=normal><a href=#__codelineno-21-22>22</a></span>
<span class=normal><a href=#__codelineno-21-23>23</a></span>
<span class=normal><a href=#__codelineno-21-24>24</a></span>
<span class=normal><a href=#__codelineno-21-25>25</a></span>
<span class=normal><a href=#__codelineno-21-26>26</a></span>
<span class=normal><a href=#__codelineno-21-27>27</a></span>
<span class=normal><a href=#__codelineno-21-28>28</a></span>
<span class=normal><a href=#__codelineno-21-29>29</a></span>
<span class=normal><a href=#__codelineno-21-30>30</a></span>
<span class=normal><a href=#__codelineno-21-31>31</a></span>
<span class=normal><a href=#__codelineno-21-32>32</a></span>
<span class=normal><a href=#__codelineno-21-33>33</a></span>
<span class=normal><a href=#__codelineno-21-34>34</a></span>
<span class=normal><a href=#__codelineno-21-35>35</a></span>
<span class=normal><a href=#__codelineno-21-36>36</a></span>
<span class=normal><a href=#__codelineno-21-37>37</a></span>
<span class=normal><a href=#__codelineno-21-38>38</a></span>
<span class=normal><a href=#__codelineno-21-39>39</a></span>
<span class=normal><a href=#__codelineno-21-40>40</a></span>
<span class=normal><a href=#__codelineno-21-41>41</a></span>
<span class=normal><a href=#__codelineno-21-42>42</a></span>
<span class=normal><a href=#__codelineno-21-43>43</a></span>
<span class=normal><a href=#__codelineno-21-44>44</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-21-1><a id=__codelineno-21-1 name=__codelineno-21-1></a><span class=cp>#if !SINGLE_THREADED</span>
</span><span id=__span-21-2><a id=__codelineno-21-2 name=__codelineno-21-2></a><span class=na>[Test]</span>
</span><span id=__span-21-3><a id=__codelineno-21-3 name=__codelineno-21-3></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ConcurrentSetsDoNotCorruptCache</span><span class=p>()</span>
</span><span id=__span-21-4><a id=__codelineno-21-4 name=__codelineno-21-4></a><span class=p>{</span>
</span><span id=__span-21-5><a id=__codelineno-21-5 name=__codelineno-21-5></a><span class=w> </span><span class=k>using</span><span class=w> </span><span class=nn>Cache</span><span class=o><</span><span class=kt>int</span><span class=p>,</span><span class=w> </span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>cache</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>CacheBuilder</span><span class=o><</span><span class=kt>int</span><span class=p>,</span><span class=w> </span><span class=kt>int</span><span class=o>></span>
</span><span id=__span-21-6><a id=__codelineno-21-6 name=__codelineno-21-6></a><span class=w> </span><span class=p>.</span><span class=n>NewBuilder</span><span class=p>()</span>
</span><span id=__span-21-7><a id=__codelineno-21-7 name=__codelineno-21-7></a><span class=w> </span><span class=p>.</span><span class=n>MaximumSize</span><span class=p>(</span><span class=mi>1000</span><span class=p>)</span>
</span><span id=__span-21-8><a id=__codelineno-21-8 name=__codelineno-21-8></a><span class=w> </span><span class=p>.</span><span class=n>Build</span><span class=p>();</span>
</span><span id=__span-21-9><a id=__codelineno-21-9 name=__codelineno-21-9></a>
</span><span id=__span-21-10><a id=__codelineno-21-10 name=__codelineno-21-10></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>threadCount</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>4</span><span class=p>;</span>
</span><span id=__span-21-11><a id=__codelineno-21-11 name=__codelineno-21-11></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>operationsPerThread</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>250</span><span class=p>;</span>
</span><span id=__span-21-12><a id=__codelineno-21-12 name=__codelineno-21-12></a><span class=w> </span><span class=n>CountdownEvent</span><span class=w> </span><span class=n>countdownEvent</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>(</span><span class=n>threadCount</span><span class=p>);</span>
</span><span id=__span-21-13><a id=__codelineno-21-13 name=__codelineno-21-13></a><span class=w> </span><span class=n>Exception</span><span class=w> </span><span class=n>capturedException</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>null</span><span class=p>;</span>
</span><span id=__span-21-14><a id=__codelineno-21-14 name=__codelineno-21-14></a>
</span><span id=__span-21-15><a id=__codelineno-21-15 name=__codelineno-21-15></a><span class=w> </span><span class=k>for</span><span class=w> </span><span class=p>(</span><span class=kt>int</span><span class=w> </span><span class=n>t</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>0</span><span class=p>;</span><span class=w> </span><span class=n>t</span><span class=w> </span><span class=o><</span><span class=w> </span><span class=n>threadCount</span><span class=p>;</span><span class=w> </span><span class=n>t</span><span class=o>++</span><span class=p>)</span>
</span><span id=__span-21-16><a id=__codelineno-21-16 name=__codelineno-21-16></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-21-17><a id=__codelineno-21-17 name=__codelineno-21-17></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>threadIndex</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>t</span><span class=p>;</span>
</span><span id=__span-21-18><a id=__codelineno-21-18 name=__codelineno-21-18></a><span class=w> </span><span class=n>ThreadPool</span><span class=p>.</span><span class=n>QueueUserWorkItem</span><span class=p>(</span><span class=n>_</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-21-19><a id=__codelineno-21-19 name=__codelineno-21-19></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-21-20><a id=__codelineno-21-20 name=__codelineno-21-20></a><span class=w> </span><span class=k>try</span>
</span><span id=__span-21-21><a id=__codelineno-21-21 name=__codelineno-21-21></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-21-22><a id=__codelineno-21-22 name=__codelineno-21-22></a><span class=w> </span><span class=k>for</span><span class=w> </span><span class=p>(</span><span class=kt>int</span><span class=w> </span><span class=n>i</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>0</span><span class=p>;</span><span class=w> </span><span class=n>i</span><span class=w> </span><span class=o><</span><span class=w> </span><span class=n>operationsPerThread</span><span class=p>;</span><span class=w> </span><span class=n>i</span><span class=o>++</span><span class=p>)</span>
</span><span id=__span-21-23><a id=__codelineno-21-23 name=__codelineno-21-23></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-21-24><a id=__codelineno-21-24 name=__codelineno-21-24></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>key</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>threadIndex</span><span class=w> </span><span class=o>*</span><span class=w> </span><span class=n>operationsPerThread</span><span class=w> </span><span class=o>+</span><span class=w> </span><span class=n>i</span><span class=p>;</span>
</span><span id=__span-21-25><a id=__codelineno-21-25 name=__codelineno-21-25></a><span class=w> </span><span class=n>cache</span><span class=p>.</span><span class=n>Set</span><span class=p>(</span><span class=n>key</span><span class=p>,</span><span class=w> </span><span class=n>key</span><span class=p>);</span>
</span><span id=__span-21-26><a id=__codelineno-21-26 name=__codelineno-21-26></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-21-27><a id=__codelineno-21-27 name=__codelineno-21-27></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-21-28><a id=__codelineno-21-28 name=__codelineno-21-28></a><span class=w> </span><span class=k>catch</span><span class=w> </span><span class=p>(</span><span class=n>Exception</span><span class=w> </span><span class=n>ex</span><span class=p>)</span>
</span><span id=__span-21-29><a id=__codelineno-21-29 name=__codelineno-21-29></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-21-30><a id=__codelineno-21-30 name=__codelineno-21-30></a><span class=w> </span><span class=n>capturedException</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>ex</span><span class=p>;</span>
</span><span id=__span-21-31><a id=__codelineno-21-31 name=__codelineno-21-31></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-21-32><a id=__codelineno-21-32 name=__codelineno-21-32></a><span class=w> </span><span class=k>finally</span>
</span><span id=__span-21-33><a id=__codelineno-21-33 name=__codelineno-21-33></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-21-34><a id=__codelineno-21-34 name=__codelineno-21-34></a><span class=w> </span><span class=n>countdownEvent</span><span class=p>.</span><span class=n>Signal</span><span class=p>();</span>
</span><span id=__span-21-35><a id=__codelineno-21-35 name=__codelineno-21-35></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-21-36><a id=__codelineno-21-36 name=__codelineno-21-36></a><span class=w> </span><span class=p>});</span>
</span><span id=__span-21-37><a id=__codelineno-21-37 name=__codelineno-21-37></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-21-38><a id=__codelineno-21-38 name=__codelineno-21-38></a>
</span><span id=__span-21-39><a id=__codelineno-21-39 name=__codelineno-21-39></a><span class=w> </span><span class=n>countdownEvent</span><span class=p>.</span><span class=n>Wait</span><span class=p>(</span><span class=n>TimeSpan</span><span class=p>.</span><span class=n>FromSeconds</span><span class=p>(</span><span class=mi>10</span><span class=p>));</span>
</span><span id=__span-21-40><a id=__codelineno-21-40 name=__codelineno-21-40></a>
</span><span id=__span-21-41><a id=__codelineno-21-41 name=__codelineno-21-41></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>capturedException</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>,</span><span class=w> </span><span class=s>$"Exception during concurrent sets: {capturedException}"</span><span class=p>);</span>
</span><span id=__span-21-42><a id=__codelineno-21-42 name=__codelineno-21-42></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=n>threadCount</span><span class=w> </span><span class=o>*</span><span class=w> </span><span class=n>operationsPerThread</span><span class=p>,</span><span class=w> </span><span class=n>cache</span><span class=p>.</span><span class=n>Count</span><span class=p>);</span>
</span><span id=__span-21-43><a id=__codelineno-21-43 name=__codelineno-21-43></a><span class=p>}</span>
</span><span id=__span-21-44><a id=__codelineno-21-44 name=__codelineno-21-44></a><span class=cp>#endif</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-mixed-readwrite-operations>Pattern: Mixed Read/Write Operations<a class=headerlink href=#pattern-mixed-readwrite-operations title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/DataStructures/CacheTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-22-1> 1</a></span>
<span class=normal><a href=#__codelineno-22-2> 2</a></span>
<span class=normal><a href=#__codelineno-22-3> 3</a></span>
<span class=normal><a href=#__codelineno-22-4> 4</a></span>
<span class=normal><a href=#__codelineno-22-5> 5</a></span>
<span class=normal><a href=#__codelineno-22-6> 6</a></span>
<span class=normal><a href=#__codelineno-22-7> 7</a></span>
<span class=normal><a href=#__codelineno-22-8> 8</a></span>
<span class=normal><a href=#__codelineno-22-9> 9</a></span>
<span class=normal><a href=#__codelineno-22-10>10</a></span>
<span class=normal><a href=#__codelineno-22-11>11</a></span>
<span class=normal><a href=#__codelineno-22-12>12</a></span>
<span class=normal><a href=#__codelineno-22-13>13</a></span>
<span class=normal><a href=#__codelineno-22-14>14</a></span>
<span class=normal><a href=#__codelineno-22-15>15</a></span>
<span class=normal><a href=#__codelineno-22-16>16</a></span>
<span class=normal><a href=#__codelineno-22-17>17</a></span>
<span class=normal><a href=#__codelineno-22-18>18</a></span>
<span class=normal><a href=#__codelineno-22-19>19</a></span>
<span class=normal><a href=#__codelineno-22-20>20</a></span>
<span class=normal><a href=#__codelineno-22-21>21</a></span>
<span class=normal><a href=#__codelineno-22-22>22</a></span>
<span class=normal><a href=#__codelineno-22-23>23</a></span>
<span class=normal><a href=#__codelineno-22-24>24</a></span>
<span class=normal><a href=#__codelineno-22-25>25</a></span>
<span class=normal><a href=#__codelineno-22-26>26</a></span>
<span class=normal><a href=#__codelineno-22-27>27</a></span>
<span class=normal><a href=#__codelineno-22-28>28</a></span>
<span class=normal><a href=#__codelineno-22-29>29</a></span>
<span class=normal><a href=#__codelineno-22-30>30</a></span>
<span class=normal><a href=#__codelineno-22-31>31</a></span>
<span class=normal><a href=#__codelineno-22-32>32</a></span>
<span class=normal><a href=#__codelineno-22-33>33</a></span>
<span class=normal><a href=#__codelineno-22-34>34</a></span>
<span class=normal><a href=#__codelineno-22-35>35</a></span>
<span class=normal><a href=#__codelineno-22-36>36</a></span>
<span class=normal><a href=#__codelineno-22-37>37</a></span>
<span class=normal><a href=#__codelineno-22-38>38</a></span>
<span class=normal><a href=#__codelineno-22-39>39</a></span>
<span class=normal><a href=#__codelineno-22-40>40</a></span>
<span class=normal><a href=#__codelineno-22-41>41</a></span>
<span class=normal><a href=#__codelineno-22-42>42</a></span>
<span class=normal><a href=#__codelineno-22-43>43</a></span>
<span class=normal><a href=#__codelineno-22-44>44</a></span>
<span class=normal><a href=#__codelineno-22-45>45</a></span>
<span class=normal><a href=#__codelineno-22-46>46</a></span>
<span class=normal><a href=#__codelineno-22-47>47</a></span>
<span class=normal><a href=#__codelineno-22-48>48</a></span>
<span class=normal><a href=#__codelineno-22-49>49</a></span>
<span class=normal><a href=#__codelineno-22-50>50</a></span>
<span class=normal><a href=#__codelineno-22-51>51</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-22-1><a id=__codelineno-22-1 name=__codelineno-22-1></a><span class=cp>#if !SINGLE_THREADED</span>
</span><span id=__span-22-2><a id=__codelineno-22-2 name=__codelineno-22-2></a><span class=na>[Test]</span>
</span><span id=__span-22-3><a id=__codelineno-22-3 name=__codelineno-22-3></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ConcurrentSetsAndGetsDoNotCorruptCache</span><span class=p>()</span>
</span><span id=__span-22-4><a id=__codelineno-22-4 name=__codelineno-22-4></a><span class=p>{</span>
</span><span id=__span-22-5><a id=__codelineno-22-5 name=__codelineno-22-5></a><span class=w> </span><span class=k>using</span><span class=w> </span><span class=nn>Cache</span><span class=o><</span><span class=kt>int</span><span class=p>,</span><span class=w> </span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>cache</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>CacheBuilder</span><span class=o><</span><span class=kt>int</span><span class=p>,</span><span class=w> </span><span class=kt>int</span><span class=o>></span>
</span><span id=__span-22-6><a id=__codelineno-22-6 name=__codelineno-22-6></a><span class=w> </span><span class=p>.</span><span class=n>NewBuilder</span><span class=p>()</span>
</span><span id=__span-22-7><a id=__codelineno-22-7 name=__codelineno-22-7></a><span class=w> </span><span class=p>.</span><span class=n>MaximumSize</span><span class=p>(</span><span class=mi>500</span><span class=p>)</span>
</span><span id=__span-22-8><a id=__codelineno-22-8 name=__codelineno-22-8></a><span class=w> </span><span class=p>.</span><span class=n>Build</span><span class=p>();</span>
</span><span id=__span-22-9><a id=__codelineno-22-9 name=__codelineno-22-9></a>
</span><span id=__span-22-10><a id=__codelineno-22-10 name=__codelineno-22-10></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>threadCount</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>4</span><span class=p>;</span>
</span><span id=__span-22-11><a id=__codelineno-22-11 name=__codelineno-22-11></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>operationsPerThread</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>500</span><span class=p>;</span>
</span><span id=__span-22-12><a id=__codelineno-22-12 name=__codelineno-22-12></a><span class=w> </span><span class=n>CountdownEvent</span><span class=w> </span><span class=n>countdownEvent</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>(</span><span class=n>threadCount</span><span class=p>);</span>
</span><span id=__span-22-13><a id=__codelineno-22-13 name=__codelineno-22-13></a><span class=w> </span><span class=n>Exception</span><span class=w> </span><span class=n>capturedException</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>null</span><span class=p>;</span>
</span><span id=__span-22-14><a id=__codelineno-22-14 name=__codelineno-22-14></a>
</span><span id=__span-22-15><a id=__codelineno-22-15 name=__codelineno-22-15></a><span class=w> </span><span class=k>for</span><span class=w> </span><span class=p>(</span><span class=kt>int</span><span class=w> </span><span class=n>t</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>0</span><span class=p>;</span><span class=w> </span><span class=n>t</span><span class=w> </span><span class=o><</span><span class=w> </span><span class=n>threadCount</span><span class=p>;</span><span class=w> </span><span class=n>t</span><span class=o>++</span><span class=p>)</span>
</span><span id=__span-22-16><a id=__codelineno-22-16 name=__codelineno-22-16></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-22-17><a id=__codelineno-22-17 name=__codelineno-22-17></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>threadIndex</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>t</span><span class=p>;</span>
</span><span id=__span-22-18><a id=__codelineno-22-18 name=__codelineno-22-18></a><span class=w> </span><span class=n>ThreadPool</span><span class=p>.</span><span class=n>QueueUserWorkItem</span><span class=p>(</span><span class=n>_</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-22-19><a id=__codelineno-22-19 name=__codelineno-22-19></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-22-20><a id=__codelineno-22-20 name=__codelineno-22-20></a><span class=w> </span><span class=k>try</span>
</span><span id=__span-22-21><a id=__codelineno-22-21 name=__codelineno-22-21></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-22-22><a id=__codelineno-22-22 name=__codelineno-22-22></a><span class=w> </span><span class=k>for</span><span class=w> </span><span class=p>(</span><span class=kt>int</span><span class=w> </span><span class=n>i</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>0</span><span class=p>;</span><span class=w> </span><span class=n>i</span><span class=w> </span><span class=o><</span><span class=w> </span><span class=n>operationsPerThread</span><span class=p>;</span><span class=w> </span><span class=n>i</span><span class=o>++</span><span class=p>)</span>
</span><span id=__span-22-23><a id=__codelineno-22-23 name=__codelineno-22-23></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-22-24><a id=__codelineno-22-24 name=__codelineno-22-24></a><span class=w> </span><span class=k>if</span><span class=w> </span><span class=p>(</span><span class=n>i</span><span class=w> </span><span class=o>%</span><span class=w> </span><span class=mi>2</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=mi>0</span><span class=p>)</span>
</span><span id=__span-22-25><a id=__codelineno-22-25 name=__codelineno-22-25></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-22-26><a id=__codelineno-22-26 name=__codelineno-22-26></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>key</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>threadIndex</span><span class=w> </span><span class=o>*</span><span class=w> </span><span class=mi>100</span><span class=w> </span><span class=o>+</span><span class=w> </span><span class=p>(</span><span class=n>i</span><span class=w> </span><span class=o>%</span><span class=w> </span><span class=mi>100</span><span class=p>);</span>
</span><span id=__span-22-27><a id=__codelineno-22-27 name=__codelineno-22-27></a><span class=w> </span><span class=n>cache</span><span class=p>.</span><span class=n>Set</span><span class=p>(</span><span class=n>key</span><span class=p>,</span><span class=w> </span><span class=n>key</span><span class=p>);</span>
</span><span id=__span-22-28><a id=__codelineno-22-28 name=__codelineno-22-28></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-22-29><a id=__codelineno-22-29 name=__codelineno-22-29></a><span class=w> </span><span class=k>else</span>
</span><span id=__span-22-30><a id=__codelineno-22-30 name=__codelineno-22-30></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-22-31><a id=__codelineno-22-31 name=__codelineno-22-31></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>key</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=p>(</span><span class=n>threadIndex</span><span class=w> </span><span class=o>+</span><span class=w> </span><span class=mi>1</span><span class=p>)</span><span class=w> </span><span class=o>%</span><span class=w> </span><span class=n>threadCount</span><span class=w> </span><span class=o>*</span><span class=w> </span><span class=mi>100</span><span class=w> </span><span class=o>+</span><span class=w> </span><span class=p>(</span><span class=n>i</span><span class=w> </span><span class=o>%</span><span class=w> </span><span class=mi>100</span><span class=p>);</span>
</span><span id=__span-22-32><a id=__codelineno-22-32 name=__codelineno-22-32></a><span class=w> </span><span class=n>cache</span><span class=p>.</span><span class=n>TryGet</span><span class=p>(</span><span class=n>key</span><span class=p>,</span><span class=w> </span><span class=k>out</span><span class=w> </span><span class=n>_</span><span class=p>);</span>
</span><span id=__span-22-33><a id=__codelineno-22-33 name=__codelineno-22-33></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-22-34><a id=__codelineno-22-34 name=__codelineno-22-34></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-22-35><a id=__codelineno-22-35 name=__codelineno-22-35></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-22-36><a id=__codelineno-22-36 name=__codelineno-22-36></a><span class=w> </span><span class=k>catch</span><span class=w> </span><span class=p>(</span><span class=n>Exception</span><span class=w> </span><span class=n>ex</span><span class=p>)</span>
</span><span id=__span-22-37><a id=__codelineno-22-37 name=__codelineno-22-37></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-22-38><a id=__codelineno-22-38 name=__codelineno-22-38></a><span class=w> </span><span class=n>capturedException</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>ex</span><span class=p>;</span>
</span><span id=__span-22-39><a id=__codelineno-22-39 name=__codelineno-22-39></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-22-40><a id=__codelineno-22-40 name=__codelineno-22-40></a><span class=w> </span><span class=k>finally</span>
</span><span id=__span-22-41><a id=__codelineno-22-41 name=__codelineno-22-41></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-22-42><a id=__codelineno-22-42 name=__codelineno-22-42></a><span class=w> </span><span class=n>countdownEvent</span><span class=p>.</span><span class=n>Signal</span><span class=p>();</span>
</span><span id=__span-22-43><a id=__codelineno-22-43 name=__codelineno-22-43></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-22-44><a id=__codelineno-22-44 name=__codelineno-22-44></a><span class=w> </span><span class=p>});</span>
</span><span id=__span-22-45><a id=__codelineno-22-45 name=__codelineno-22-45></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-22-46><a id=__codelineno-22-46 name=__codelineno-22-46></a>
</span><span id=__span-22-47><a id=__codelineno-22-47 name=__codelineno-22-47></a><span class=w> </span><span class=n>countdownEvent</span><span class=p>.</span><span class=n>Wait</span><span class=p>(</span><span class=n>TimeSpan</span><span class=p>.</span><span class=n>FromSeconds</span><span class=p>(</span><span class=mi>10</span><span class=p>));</span>
</span><span id=__span-22-48><a id=__codelineno-22-48 name=__codelineno-22-48></a>
</span><span id=__span-22-49><a id=__codelineno-22-49 name=__codelineno-22-49></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsNull</span><span class=p>(</span><span class=n>capturedException</span><span class=p>,</span><span class=w> </span><span class=s>$"Exception during concurrent operations: {capturedException}"</span><span class=p>);</span>
</span><span id=__span-22-50><a id=__codelineno-22-50 name=__codelineno-22-50></a><span class=p>}</span>
</span><span id=__span-22-51><a id=__codelineno-22-51 name=__codelineno-22-51></a><span class=cp>#endif</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-rapid-allocationdeallocation>Pattern: Rapid Allocation/Deallocation<a class=headerlink href=#pattern-rapid-allocationdeallocation title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/Utils/BuffersTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-23-1> 1</a></span>
<span class=normal><a href=#__codelineno-23-2> 2</a></span>
<span class=normal><a href=#__codelineno-23-3> 3</a></span>
<span class=normal><a href=#__codelineno-23-4> 4</a></span>
<span class=normal><a href=#__codelineno-23-5> 5</a></span>
<span class=normal><a href=#__codelineno-23-6> 6</a></span>
<span class=normal><a href=#__codelineno-23-7> 7</a></span>
<span class=normal><a href=#__codelineno-23-8> 8</a></span>
<span class=normal><a href=#__codelineno-23-9> 9</a></span>
<span class=normal><a href=#__codelineno-23-10>10</a></span>
<span class=normal><a href=#__codelineno-23-11>11</a></span>
<span class=normal><a href=#__codelineno-23-12>12</a></span>
<span class=normal><a href=#__codelineno-23-13>13</a></span>
<span class=normal><a href=#__codelineno-23-14>14</a></span>
<span class=normal><a href=#__codelineno-23-15>15</a></span>
<span class=normal><a href=#__codelineno-23-16>16</a></span>
<span class=normal><a href=#__codelineno-23-17>17</a></span>
<span class=normal><a href=#__codelineno-23-18>18</a></span>
<span class=normal><a href=#__codelineno-23-19>19</a></span>
<span class=normal><a href=#__codelineno-23-20>20</a></span>
<span class=normal><a href=#__codelineno-23-21>21</a></span>
<span class=normal><a href=#__codelineno-23-22>22</a></span>
<span class=normal><a href=#__codelineno-23-23>23</a></span>
<span class=normal><a href=#__codelineno-23-24>24</a></span>
<span class=normal><a href=#__codelineno-23-25>25</a></span>
<span class=normal><a href=#__codelineno-23-26>26</a></span>
<span class=normal><a href=#__codelineno-23-27>27</a></span>
<span class=normal><a href=#__codelineno-23-28>28</a></span>
<span class=normal><a href=#__codelineno-23-29>29</a></span>
<span class=normal><a href=#__codelineno-23-30>30</a></span>
<span class=normal><a href=#__codelineno-23-31>31</a></span>
<span class=normal><a href=#__codelineno-23-32>32</a></span>
<span class=normal><a href=#__codelineno-23-33>33</a></span>
<span class=normal><a href=#__codelineno-23-34>34</a></span>
<span class=normal><a href=#__codelineno-23-35>35</a></span>
<span class=normal><a href=#__codelineno-23-36>36</a></span>
<span class=normal><a href=#__codelineno-23-37>37</a></span>
<span class=normal><a href=#__codelineno-23-38>38</a></span>
<span class=normal><a href=#__codelineno-23-39>39</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-23-1><a id=__codelineno-23-1 name=__codelineno-23-1></a><span class=cp>#if !SINGLE_THREADED</span>
</span><span id=__span-23-2><a id=__codelineno-23-2 name=__codelineno-23-2></a><span class=na>[Test]</span>
</span><span id=__span-23-3><a id=__codelineno-23-3 name=__codelineno-23-3></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>WallstopFastArrayPoolConcurrentAccessRapidAllocationDeallocation</span><span class=p>()</span>
</span><span id=__span-23-4><a id=__codelineno-23-4 name=__codelineno-23-4></a><span class=p>{</span>
</span><span id=__span-23-5><a id=__codelineno-23-5 name=__codelineno-23-5></a><span class=w> </span><span class=k>const</span><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>iterations</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>1000</span><span class=p>;</span>
</span><span id=__span-23-6><a id=__codelineno-23-6 name=__codelineno-23-6></a><span class=w> </span><span class=k>const</span><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>threadCount</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>4</span><span class=p>;</span>
</span><span id=__span-23-7><a id=__codelineno-23-7 name=__codelineno-23-7></a>
</span><span id=__span-23-8><a id=__codelineno-23-8 name=__codelineno-23-8></a><span class=w> </span><span class=n>CountdownEvent</span><span class=w> </span><span class=n>countdownEvent</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>(</span><span class=n>threadCount</span><span class=p>);</span>
</span><span id=__span-23-9><a id=__codelineno-23-9 name=__codelineno-23-9></a><span class=w> </span><span class=n>Exception</span><span class=w> </span><span class=n>capturedException</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>null</span><span class=p>;</span>
</span><span id=__span-23-10><a id=__codelineno-23-10 name=__codelineno-23-10></a>
</span><span id=__span-23-11><a id=__codelineno-23-11 name=__codelineno-23-11></a><span class=w> </span><span class=k>for</span><span class=w> </span><span class=p>(</span><span class=kt>int</span><span class=w> </span><span class=n>t</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>0</span><span class=p>;</span><span class=w> </span><span class=n>t</span><span class=w> </span><span class=o><</span><span class=w> </span><span class=n>threadCount</span><span class=p>;</span><span class=w> </span><span class=n>t</span><span class=o>++</span><span class=p>)</span>
</span><span id=__span-23-12><a id=__codelineno-23-12 name=__codelineno-23-12></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-23-13><a id=__codelineno-23-13 name=__codelineno-23-13></a><span class=w> </span><span class=n>ThreadPool</span><span class=p>.</span><span class=n>QueueUserWorkItem</span><span class=p>(</span><span class=n>_</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-23-14><a id=__codelineno-23-14 name=__codelineno-23-14></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-23-15><a id=__codelineno-23-15 name=__codelineno-23-15></a><span class=w> </span><span class=k>try</span>
</span><span id=__span-23-16><a id=__codelineno-23-16 name=__codelineno-23-16></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-23-17><a id=__codelineno-23-17 name=__codelineno-23-17></a><span class=w> </span><span class=k>for</span><span class=w> </span><span class=p>(</span><span class=kt>int</span><span class=w> </span><span class=n>i</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>0</span><span class=p>;</span><span class=w> </span><span class=n>i</span><span class=w> </span><span class=o><</span><span class=w> </span><span class=n>iterations</span><span class=p>;</span><span class=w> </span><span class=n>i</span><span class=o>++</span><span class=p>)</span>
</span><span id=__span-23-18><a id=__codelineno-23-18 name=__codelineno-23-18></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-23-19><a id=__codelineno-23-19 name=__codelineno-23-19></a><span class=w> </span><span class=k>using</span><span class=w> </span><span class=p>(</span><span class=n>PooledArray</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>pooled</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>WallstopFastArrayPool</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=p>.</span><span class=n>Get</span><span class=p>(</span><span class=mi>64</span><span class=p>,</span><span class=w> </span><span class=k>out</span><span class=w> </span><span class=n>_</span><span class=p>))</span>
</span><span id=__span-23-20><a id=__codelineno-23-20 name=__codelineno-23-20></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-23-21><a id=__codelineno-23-21 name=__codelineno-23-21></a><span class=w> </span><span class=c1>// Rapid acquire/release cycle</span>
</span><span id=__span-23-22><a id=__codelineno-23-22 name=__codelineno-23-22></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-23-23><a id=__codelineno-23-23 name=__codelineno-23-23></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-23-24><a id=__codelineno-23-24 name=__codelineno-23-24></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-23-25><a id=__codelineno-23-25 name=__codelineno-23-25></a><span class=w> </span><span class=k>catch</span><span class=w> </span><span class=p>(</span><span class=n>Exception</span><span class=w> </span><span class=n>ex</span><span class=p>)</span>
</span><span id=__span-23-26><a id=__codelineno-23-26 name=__codelineno-23-26></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-23-27><a id=__codelineno-23-27 name=__codelineno-23-27></a><span class=w> </span><span class=n>capturedException</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>ex</span><span class=p>;</span>
</span><span id=__span-23-28><a id=__codelineno-23-28 name=__codelineno-23-28></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-23-29><a id=__codelineno-23-29 name=__codelineno-23-29></a><span class=w> </span><span class=k>finally</span>
</span><span id=__span-23-30><a id=__codelineno-23-30 name=__codelineno-23-30></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-23-31><a id=__codelineno-23-31 name=__codelineno-23-31></a><span class=w> </span><span class=n>countdownEvent</span><span class=p>.</span><span class=n>Signal</span><span class=p>();</span>
</span><span id=__span-23-32><a id=__codelineno-23-32 name=__codelineno-23-32></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-23-33><a id=__codelineno-23-33 name=__codelineno-23-33></a><span class=w> </span><span class=p>});</span>
</span><span id=__span-23-34><a id=__codelineno-23-34 name=__codelineno-23-34></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-23-35><a id=__codelineno-23-35 name=__codelineno-23-35></a>
</span><span id=__span-23-36><a id=__codelineno-23-36 name=__codelineno-23-36></a><span class=w> </span><span class=n>countdownEvent</span><span class=p>.</span><span class=n>Wait</span><span class=p>(</span><span class=n>TimeSpan</span><span class=p>.</span><span class=n>FromSeconds</span><span class=p>(</span><span class=mi>30</span><span class=p>));</span>
</span><span id=__span-23-37><a id=__codelineno-23-37 name=__codelineno-23-37></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsNull</span><span class=p>(</span><span class=n>capturedException</span><span class=p>,</span><span class=w> </span><span class=s>$"Exception during rapid allocation: {capturedException}"</span><span class=p>);</span>
</span><span id=__span-23-38><a id=__codelineno-23-38 name=__codelineno-23-38></a><span class=p>}</span>
</span><span id=__span-23-39><a id=__codelineno-23-39 name=__codelineno-23-39></a><span class=cp>#endif</span>
</span></code></pre></div></td></tr></table></div> <h3 id=key-practices-for-concurrent-tests>Key Practices for Concurrent Tests<a class=headerlink href=#key-practices-for-concurrent-tests title="Permanent link">¶</a></h3> <ol> <li><strong>Use <code>CountdownEvent</code></strong> to synchronize thread completion</li> <li><strong>Capture exceptions</strong> in threads since NUnit cannot catch them directly</li> <li><strong>Use reasonable timeouts</strong> (10-30 seconds) to prevent test hangs</li> <li><strong>Wrap in <code>#if !SINGLE_THREADED</code></strong> for WebGL/IL2CPP compatibility</li> <li><strong>Test both success and exception cases</strong> for thread safety</li> </ol> <h2 id=invalid-state-combinations>Invalid State Combinations<a class=headerlink href=#invalid-state-combinations title="Permanent link">¶</a></h2> <p>Some states are logically impossible during normal execution but can occur due to reflection, serialization bugs, or corrupted data.</p> <h3 id=pattern-empty-collections-where-non-empty-expected>Pattern: Empty Collections Where Non-Empty Expected<a class=headerlink href=#pattern-empty-collections-where-non-empty-expected title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-24-1> 1</a></span>
<span class=normal><a href=#__codelineno-24-2> 2</a></span>
<span class=normal><a href=#__codelineno-24-3> 3</a></span>
<span class=normal><a href=#__codelineno-24-4> 4</a></span>
<span class=normal><a href=#__codelineno-24-5> 5</a></span>
<span class=normal><a href=#__codelineno-24-6> 6</a></span>
<span class=normal><a href=#__codelineno-24-7> 7</a></span>
<span class=normal><a href=#__codelineno-24-8> 8</a></span>
<span class=normal><a href=#__codelineno-24-9> 9</a></span>
<span class=normal><a href=#__codelineno-24-10>10</a></span>
<span class=normal><a href=#__codelineno-24-11>11</a></span>
<span class=normal><a href=#__codelineno-24-12>12</a></span>
<span class=normal><a href=#__codelineno-24-13>13</a></span>
<span class=normal><a href=#__codelineno-24-14>14</a></span>
<span class=normal><a href=#__codelineno-24-15>15</a></span>
<span class=normal><a href=#__codelineno-24-16>16</a></span>
<span class=normal><a href=#__codelineno-24-17>17</a></span>
<span class=normal><a href=#__codelineno-24-18>18</a></span>
<span class=normal><a href=#__codelineno-24-19>19</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-24-1><a id=__codelineno-24-1 name=__codelineno-24-1></a><span class=na>[Test]</span>
</span><span id=__span-24-2><a id=__codelineno-24-2 name=__codelineno-24-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProcessEmptyArrayGracefully</span><span class=p>()</span>
</span><span id=__span-24-3><a id=__codelineno-24-3 name=__codelineno-24-3></a><span class=p>{</span>
</span><span id=__span-24-4><a id=__codelineno-24-4 name=__codelineno-24-4></a><span class=w> </span><span class=kt>int</span><span class=p>[]</span><span class=w> </span><span class=n>emptyArray</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>Array</span><span class=p>.</span><span class=n>Empty</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=p>();</span>
</span><span id=__span-24-5><a id=__codelineno-24-5 name=__codelineno-24-5></a>
</span><span id=__span-24-6><a id=__codelineno-24-6 name=__codelineno-24-6></a><span class=w> </span><span class=c1>// Methods that "shouldn't" receive empty arrays should handle them</span>
</span><span id=__span-24-7><a id=__codelineno-24-7 name=__codelineno-24-7></a><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>result</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>collection</span><span class=p>.</span><span class=n>Min</span><span class=p>(</span><span class=n>emptyArray</span><span class=p>);</span>
</span><span id=__span-24-8><a id=__codelineno-24-8 name=__codelineno-24-8></a>
</span><span id=__span-24-9><a id=__codelineno-24-9 name=__codelineno-24-9></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=k>default</span><span class=p>(</span><span class=kt>int</span><span class=p>),</span><span class=w> </span><span class=n>result</span><span class=p>);</span>
</span><span id=__span-24-10><a id=__codelineno-24-10 name=__codelineno-24-10></a><span class=p>}</span>
</span><span id=__span-24-11><a id=__codelineno-24-11 name=__codelineno-24-11></a>
</span><span id=__span-24-12><a id=__codelineno-24-12 name=__codelineno-24-12></a><span class=na>[Test]</span>
</span><span id=__span-24-13><a id=__codelineno-24-13 name=__codelineno-24-13></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>SortEmptyCollection</span><span class=p>()</span>
</span><span id=__span-24-14><a id=__codelineno-24-14 name=__codelineno-24-14></a><span class=p>{</span>
</span><span id=__span-24-15><a id=__codelineno-24-15 name=__codelineno-24-15></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>emptyList</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>();</span>
</span><span id=__span-24-16><a id=__codelineno-24-16 name=__codelineno-24-16></a>
</span><span id=__span-24-17><a id=__codelineno-24-17 name=__codelineno-24-17></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>DoesNotThrow</span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>emptyList</span><span class=p>.</span><span class=n>Sort</span><span class=p>(</span><span class=n>SortAlgorithm</span><span class=p>.</span><span class=n>Tim</span><span class=p>));</span>
</span><span id=__span-24-18><a id=__codelineno-24-18 name=__codelineno-24-18></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=mi>0</span><span class=p>,</span><span class=w> </span><span class=n>emptyList</span><span class=p>.</span><span class=n>Count</span><span class=p>);</span>
</span><span id=__span-24-19><a id=__codelineno-24-19 name=__codelineno-24-19></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=real-example-spatial-tree-with-zero-elements>Real Example: Spatial Tree with Zero Elements<a class=headerlink href=#real-example-spatial-tree-with-zero-elements title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/DataStructures/QuadTree2DTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-25-1> 1</a></span>
<span class=normal><a href=#__codelineno-25-2> 2</a></span>
<span class=normal><a href=#__codelineno-25-3> 3</a></span>
<span class=normal><a href=#__codelineno-25-4> 4</a></span>
<span class=normal><a href=#__codelineno-25-5> 5</a></span>
<span class=normal><a href=#__codelineno-25-6> 6</a></span>
<span class=normal><a href=#__codelineno-25-7> 7</a></span>
<span class=normal><a href=#__codelineno-25-8> 8</a></span>
<span class=normal><a href=#__codelineno-25-9> 9</a></span>
<span class=normal><a href=#__codelineno-25-10>10</a></span>
<span class=normal><a href=#__codelineno-25-11>11</a></span>
<span class=normal><a href=#__codelineno-25-12>12</a></span>
<span class=normal><a href=#__codelineno-25-13>13</a></span>
<span class=normal><a href=#__codelineno-25-14>14</a></span>
<span class=normal><a href=#__codelineno-25-15>15</a></span>
<span class=normal><a href=#__codelineno-25-16>16</a></span>
<span class=normal><a href=#__codelineno-25-17>17</a></span>
<span class=normal><a href=#__codelineno-25-18>18</a></span>
<span class=normal><a href=#__codelineno-25-19>19</a></span>
<span class=normal><a href=#__codelineno-25-20>20</a></span>
<span class=normal><a href=#__codelineno-25-21>21</a></span>
<span class=normal><a href=#__codelineno-25-22>22</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-25-1><a id=__codelineno-25-1 name=__codelineno-25-1></a><span class=na>[Test]</span>
</span><span id=__span-25-2><a id=__codelineno-25-2 name=__codelineno-25-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ConstructorWithEmptyCollectionSucceeds</span><span class=p>()</span>
</span><span id=__span-25-3><a id=__codelineno-25-3 name=__codelineno-25-3></a><span class=p>{</span>
</span><span id=__span-25-4><a id=__codelineno-25-4 name=__codelineno-25-4></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=n>Vector2</span><span class=o>></span><span class=w> </span><span class=n>points</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>();</span>
</span><span id=__span-25-5><a id=__codelineno-25-5 name=__codelineno-25-5></a><span class=w> </span><span class=n>QuadTree2D</span><span class=o><</span><span class=n>Vector2</span><span class=o>></span><span class=w> </span><span class=n>tree</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>CreateTree</span><span class=p>(</span><span class=n>points</span><span class=p>);</span>
</span><span id=__span-25-6><a id=__codelineno-25-6 name=__codelineno-25-6></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>IsNotNull</span><span class=p>(</span><span class=n>tree</span><span class=p>);</span>
</span><span id=__span-25-7><a id=__codelineno-25-7 name=__codelineno-25-7></a>
</span><span id=__span-25-8><a id=__codelineno-25-8 name=__codelineno-25-8></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=n>Vector2</span><span class=o>></span><span class=w> </span><span class=n>results</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>();</span>
</span><span id=__span-25-9><a id=__codelineno-25-9 name=__codelineno-25-9></a><span class=w> </span><span class=n>tree</span><span class=p>.</span><span class=n>GetElementsInRange</span><span class=p>(</span><span class=n>Vector2</span><span class=p>.</span><span class=n>zero</span><span class=p>,</span><span class=w> </span><span class=mf>10000f</span><span class=p>,</span><span class=w> </span><span class=n>results</span><span class=p>);</span>
</span><span id=__span-25-10><a id=__codelineno-25-10 name=__codelineno-25-10></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=mi>0</span><span class=p>,</span><span class=w> </span><span class=n>results</span><span class=p>.</span><span class=n>Count</span><span class=p>);</span>
</span><span id=__span-25-11><a id=__codelineno-25-11 name=__codelineno-25-11></a><span class=p>}</span>
</span><span id=__span-25-12><a id=__codelineno-25-12 name=__codelineno-25-12></a>
</span><span id=__span-25-13><a id=__codelineno-25-13 name=__codelineno-25-13></a><span class=na>[Test]</span>
</span><span id=__span-25-14><a id=__codelineno-25-14 name=__codelineno-25-14></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>GetApproximateNearestNeighborsWithEmptyTreeReturnsEmpty</span><span class=p>()</span>
</span><span id=__span-25-15><a id=__codelineno-25-15 name=__codelineno-25-15></a><span class=p>{</span>
</span><span id=__span-25-16><a id=__codelineno-25-16 name=__codelineno-25-16></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=n>Vector2</span><span class=o>></span><span class=w> </span><span class=n>points</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>();</span>
</span><span id=__span-25-17><a id=__codelineno-25-17 name=__codelineno-25-17></a><span class=w> </span><span class=n>QuadTree2D</span><span class=o><</span><span class=n>Vector2</span><span class=o>></span><span class=w> </span><span class=n>tree</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>CreateTree</span><span class=p>(</span><span class=n>points</span><span class=p>);</span>
</span><span id=__span-25-18><a id=__codelineno-25-18 name=__codelineno-25-18></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=n>Vector2</span><span class=o>></span><span class=w> </span><span class=n>results</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>();</span>
</span><span id=__span-25-19><a id=__codelineno-25-19 name=__codelineno-25-19></a>
</span><span id=__span-25-20><a id=__codelineno-25-20 name=__codelineno-25-20></a><span class=w> </span><span class=n>tree</span><span class=p>.</span><span class=n>GetApproximateNearestNeighbors</span><span class=p>(</span><span class=n>Vector2</span><span class=p>.</span><span class=n>zero</span><span class=p>,</span><span class=w> </span><span class=mi>5</span><span class=p>,</span><span class=w> </span><span class=n>results</span><span class=p>);</span>
</span><span id=__span-25-21><a id=__codelineno-25-21 name=__codelineno-25-21></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=mi>0</span><span class=p>,</span><span class=w> </span><span class=n>results</span><span class=p>.</span><span class=n>Count</span><span class=p>);</span>
</span><span id=__span-25-22><a id=__codelineno-25-22 name=__codelineno-25-22></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-invalid-indexkey-access>Pattern: Invalid Index/Key Access<a class=headerlink href=#pattern-invalid-indexkey-access title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-26-1> 1</a></span>
<span class=normal><a href=#__codelineno-26-2> 2</a></span>
<span class=normal><a href=#__codelineno-26-3> 3</a></span>
<span class=normal><a href=#__codelineno-26-4> 4</a></span>
<span class=normal><a href=#__codelineno-26-5> 5</a></span>
<span class=normal><a href=#__codelineno-26-6> 6</a></span>
<span class=normal><a href=#__codelineno-26-7> 7</a></span>
<span class=normal><a href=#__codelineno-26-8> 8</a></span>
<span class=normal><a href=#__codelineno-26-9> 9</a></span>
<span class=normal><a href=#__codelineno-26-10>10</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-26-1><a id=__codelineno-26-1 name=__codelineno-26-1></a><span class=na>[Test]</span>
</span><span id=__span-26-2><a id=__codelineno-26-2 name=__codelineno-26-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>IndexerThrowsOnInvalidIndex</span><span class=p>()</span>
</span><span id=__span-26-3><a id=__codelineno-26-3 name=__codelineno-26-3></a><span class=p>{</span>
</span><span id=__span-26-4><a id=__codelineno-26-4 name=__codelineno-26-4></a><span class=w> </span><span class=n>CyclicBuffer</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>buffer</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>(</span><span class=mi>5</span><span class=p>)</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=mi>1</span><span class=p>,</span><span class=w> </span><span class=mi>2</span><span class=w> </span><span class=p>};</span>
</span><span id=__span-26-5><a id=__codelineno-26-5 name=__codelineno-26-5></a>
</span><span id=__span-26-6><a id=__codelineno-26-6 name=__codelineno-26-6></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=o>-</span><span class=mi>1</span><span class=p>];</span><span class=w> </span><span class=p>});</span>
</span><span id=__span-26-7><a id=__codelineno-26-7 name=__codelineno-26-7></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=mi>2</span><span class=p>];</span><span class=w> </span><span class=p>});</span>
</span><span id=__span-26-8><a id=__codelineno-26-8 name=__codelineno-26-8></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=kt>int</span><span class=p>.</span><span class=n>MaxValue</span><span class=p>];</span><span class=w> </span><span class=p>});</span>
</span><span id=__span-26-9><a id=__codelineno-26-9 name=__codelineno-26-9></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=kt>int</span><span class=p>.</span><span class=n>MinValue</span><span class=p>];</span><span class=w> </span><span class=p>});</span>
</span><span id=__span-26-10><a id=__codelineno-26-10 name=__codelineno-26-10></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=real-example-cyclicbuffertestscs>Real Example: CyclicBufferTests.cs<a class=headerlink href=#real-example-cyclicbuffertestscs title="Permanent link">¶</a></h3> <p>From <code>/workspaces/com.wallstop-studios.unity-helpers/Tests/Runtime/DataStructures/CyclicBufferTests.cs</code>:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-27-1> 1</a></span>
<span class=normal><a href=#__codelineno-27-2> 2</a></span>
<span class=normal><a href=#__codelineno-27-3> 3</a></span>
<span class=normal><a href=#__codelineno-27-4> 4</a></span>
<span class=normal><a href=#__codelineno-27-5> 5</a></span>
<span class=normal><a href=#__codelineno-27-6> 6</a></span>
<span class=normal><a href=#__codelineno-27-7> 7</a></span>
<span class=normal><a href=#__codelineno-27-8> 8</a></span>
<span class=normal><a href=#__codelineno-27-9> 9</a></span>
<span class=normal><a href=#__codelineno-27-10>10</a></span>
<span class=normal><a href=#__codelineno-27-11>11</a></span>
<span class=normal><a href=#__codelineno-27-12>12</a></span>
<span class=normal><a href=#__codelineno-27-13>13</a></span>
<span class=normal><a href=#__codelineno-27-14>14</a></span>
<span class=normal><a href=#__codelineno-27-15>15</a></span>
<span class=normal><a href=#__codelineno-27-16>16</a></span>
<span class=normal><a href=#__codelineno-27-17>17</a></span>
<span class=normal><a href=#__codelineno-27-18>18</a></span>
<span class=normal><a href=#__codelineno-27-19>19</a></span>
<span class=normal><a href=#__codelineno-27-20>20</a></span>
<span class=normal><a href=#__codelineno-27-21>21</a></span>
<span class=normal><a href=#__codelineno-27-22>22</a></span>
<span class=normal><a href=#__codelineno-27-23>23</a></span>
<span class=normal><a href=#__codelineno-27-24>24</a></span>
<span class=normal><a href=#__codelineno-27-25>25</a></span>
<span class=normal><a href=#__codelineno-27-26>26</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-27-1><a id=__codelineno-27-1 name=__codelineno-27-1></a><span class=na>[Test]</span>
</span><span id=__span-27-2><a id=__codelineno-27-2 name=__codelineno-27-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>IndexerGetOutOfBounds</span><span class=p>()</span>
</span><span id=__span-27-3><a id=__codelineno-27-3 name=__codelineno-27-3></a><span class=p>{</span>
</span><span id=__span-27-4><a id=__codelineno-27-4 name=__codelineno-27-4></a><span class=w> </span><span class=n>CyclicBuffer</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>buffer</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>(</span><span class=mi>5</span><span class=p>)</span><span class=w> </span><span class=p>{</span><span class=w> </span><span class=mi>1</span><span class=p>,</span><span class=w> </span><span class=mi>2</span><span class=w> </span><span class=p>};</span>
</span><span id=__span-27-5><a id=__codelineno-27-5 name=__codelineno-27-5></a>
</span><span id=__span-27-6><a id=__codelineno-27-6 name=__codelineno-27-6></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-27-7><a id=__codelineno-27-7 name=__codelineno-27-7></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-27-8><a id=__codelineno-27-8 name=__codelineno-27-8></a><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=o>-</span><span class=mi>1</span><span class=p>];</span>
</span><span id=__span-27-9><a id=__codelineno-27-9 name=__codelineno-27-9></a><span class=w> </span><span class=p>});</span>
</span><span id=__span-27-10><a id=__codelineno-27-10 name=__codelineno-27-10></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-27-11><a id=__codelineno-27-11 name=__codelineno-27-11></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-27-12><a id=__codelineno-27-12 name=__codelineno-27-12></a><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=mi>2</span><span class=p>];</span>
</span><span id=__span-27-13><a id=__codelineno-27-13 name=__codelineno-27-13></a><span class=w> </span><span class=p>});</span>
</span><span id=__span-27-14><a id=__codelineno-27-14 name=__codelineno-27-14></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-27-15><a id=__codelineno-27-15 name=__codelineno-27-15></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-27-16><a id=__codelineno-27-16 name=__codelineno-27-16></a><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=mi>5</span><span class=p>];</span>
</span><span id=__span-27-17><a id=__codelineno-27-17 name=__codelineno-27-17></a><span class=w> </span><span class=p>});</span>
</span><span id=__span-27-18><a id=__codelineno-27-18 name=__codelineno-27-18></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-27-19><a id=__codelineno-27-19 name=__codelineno-27-19></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-27-20><a id=__codelineno-27-20 name=__codelineno-27-20></a><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=kt>int</span><span class=p>.</span><span class=n>MaxValue</span><span class=p>];</span>
</span><span id=__span-27-21><a id=__codelineno-27-21 name=__codelineno-27-21></a><span class=w> </span><span class=p>});</span>
</span><span id=__span-27-22><a id=__codelineno-27-22 name=__codelineno-27-22></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>IndexOutOfRangeException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span>
</span><span id=__span-27-23><a id=__codelineno-27-23 name=__codelineno-27-23></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-27-24><a id=__codelineno-27-24 name=__codelineno-27-24></a><span class=w> </span><span class=n>_</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>buffer</span><span class=p>[</span><span class=kt>int</span><span class=p>.</span><span class=n>MinValue</span><span class=p>];</span>
</span><span id=__span-27-25><a id=__codelineno-27-25 name=__codelineno-27-25></a><span class=w> </span><span class=p>});</span>
</span><span id=__span-27-26><a id=__codelineno-27-26 name=__codelineno-27-26></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-disposed-object-access>Pattern: Disposed Object Access<a class=headerlink href=#pattern-disposed-object-access title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-28-1> 1</a></span>
<span class=normal><a href=#__codelineno-28-2> 2</a></span>
<span class=normal><a href=#__codelineno-28-3> 3</a></span>
<span class=normal><a href=#__codelineno-28-4> 4</a></span>
<span class=normal><a href=#__codelineno-28-5> 5</a></span>
<span class=normal><a href=#__codelineno-28-6> 6</a></span>
<span class=normal><a href=#__codelineno-28-7> 7</a></span>
<span class=normal><a href=#__codelineno-28-8> 8</a></span>
<span class=normal><a href=#__codelineno-28-9> 9</a></span>
<span class=normal><a href=#__codelineno-28-10>10</a></span>
<span class=normal><a href=#__codelineno-28-11>11</a></span>
<span class=normal><a href=#__codelineno-28-12>12</a></span>
<span class=normal><a href=#__codelineno-28-13>13</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-28-1><a id=__codelineno-28-1 name=__codelineno-28-1></a><span class=na>[Test]</span>
</span><span id=__span-28-2><a id=__codelineno-28-2 name=__codelineno-28-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>AccessAfterDisposeThrows</span><span class=p>()</span>
</span><span id=__span-28-3><a id=__codelineno-28-3 name=__codelineno-28-3></a><span class=p>{</span>
</span><span id=__span-28-4><a id=__codelineno-28-4 name=__codelineno-28-4></a><span class=w> </span><span class=n>Cache</span><span class=o><</span><span class=kt>int</span><span class=p>,</span><span class=w> </span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>cache</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=n>CacheBuilder</span><span class=o><</span><span class=kt>int</span><span class=p>,</span><span class=w> </span><span class=kt>int</span><span class=o>></span>
</span><span id=__span-28-5><a id=__codelineno-28-5 name=__codelineno-28-5></a><span class=w> </span><span class=p>.</span><span class=n>NewBuilder</span><span class=p>()</span>
</span><span id=__span-28-6><a id=__codelineno-28-6 name=__codelineno-28-6></a><span class=w> </span><span class=p>.</span><span class=n>MaximumSize</span><span class=p>(</span><span class=mi>100</span><span class=p>)</span>
</span><span id=__span-28-7><a id=__codelineno-28-7 name=__codelineno-28-7></a><span class=w> </span><span class=p>.</span><span class=n>Build</span><span class=p>();</span>
</span><span id=__span-28-8><a id=__codelineno-28-8 name=__codelineno-28-8></a>
</span><span id=__span-28-9><a id=__codelineno-28-9 name=__codelineno-28-9></a><span class=w> </span><span class=n>cache</span><span class=p>.</span><span class=n>Dispose</span><span class=p>();</span>
</span><span id=__span-28-10><a id=__codelineno-28-10 name=__codelineno-28-10></a>
</span><span id=__span-28-11><a id=__codelineno-28-11 name=__codelineno-28-11></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>ObjectDisposedException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>cache</span><span class=p>.</span><span class=n>Set</span><span class=p>(</span><span class=mi>1</span><span class=p>,</span><span class=w> </span><span class=mi>1</span><span class=p>));</span>
</span><span id=__span-28-12><a id=__codelineno-28-12 name=__codelineno-28-12></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>ObjectDisposedException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>cache</span><span class=p>.</span><span class=n>TryGet</span><span class=p>(</span><span class=mi>1</span><span class=p>,</span><span class=w> </span><span class=k>out</span><span class=w> </span><span class=n>_</span><span class=p>));</span>
</span><span id=__span-28-13><a id=__codelineno-28-13 name=__codelineno-28-13></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h3 id=pattern-extreme-capacity-values>Pattern: Extreme Capacity Values<a class=headerlink href=#pattern-extreme-capacity-values title="Permanent link">¶</a></h3> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-29-1> 1</a></span>
<span class=normal><a href=#__codelineno-29-2> 2</a></span>
<span class=normal><a href=#__codelineno-29-3> 3</a></span>
<span class=normal><a href=#__codelineno-29-4> 4</a></span>
<span class=normal><a href=#__codelineno-29-5> 5</a></span>
<span class=normal><a href=#__codelineno-29-6> 6</a></span>
<span class=normal><a href=#__codelineno-29-7> 7</a></span>
<span class=normal><a href=#__codelineno-29-8> 8</a></span>
<span class=normal><a href=#__codelineno-29-9> 9</a></span>
<span class=normal><a href=#__codelineno-29-10>10</a></span>
<span class=normal><a href=#__codelineno-29-11>11</a></span>
<span class=normal><a href=#__codelineno-29-12>12</a></span>
<span class=normal><a href=#__codelineno-29-13>13</a></span>
<span class=normal><a href=#__codelineno-29-14>14</a></span>
<span class=normal><a href=#__codelineno-29-15>15</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-29-1><a id=__codelineno-29-1 name=__codelineno-29-1></a><span class=na>[Test]</span>
</span><span id=__span-29-2><a id=__codelineno-29-2 name=__codelineno-29-2></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>IntMaxCapacityOk</span><span class=p>()</span>
</span><span id=__span-29-3><a id=__codelineno-29-3 name=__codelineno-29-3></a><span class=p>{</span>
</span><span id=__span-29-4><a id=__codelineno-29-4 name=__codelineno-29-4></a><span class=w> </span><span class=n>CyclicBuffer</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>buffer</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>(</span><span class=kt>int</span><span class=p>.</span><span class=n>MaxValue</span><span class=p>);</span>
</span><span id=__span-29-5><a id=__codelineno-29-5 name=__codelineno-29-5></a><span class=w> </span><span class=n>CollectionAssert</span><span class=p>.</span><span class=n>AreEquivalent</span><span class=p>(</span><span class=n>Array</span><span class=p>.</span><span class=n>Empty</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=p>(),</span><span class=w> </span><span class=n>buffer</span><span class=p>);</span>
</span><span id=__span-29-6><a id=__codelineno-29-6 name=__codelineno-29-6></a>
</span><span id=__span-29-7><a id=__codelineno-29-7 name=__codelineno-29-7></a><span class=w> </span><span class=k>const</span><span class=w> </span><span class=kt>int</span><span class=w> </span><span class=n>tries</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>50</span><span class=p>;</span>
</span><span id=__span-29-8><a id=__codelineno-29-8 name=__codelineno-29-8></a><span class=w> </span><span class=n>List</span><span class=o><</span><span class=kt>int</span><span class=o>></span><span class=w> </span><span class=n>expected</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=k>new</span><span class=p>(</span><span class=n>tries</span><span class=p>);</span>
</span><span id=__span-29-9><a id=__codelineno-29-9 name=__codelineno-29-9></a><span class=w> </span><span class=k>for</span><span class=w> </span><span class=p>(</span><span class=kt>int</span><span class=w> </span><span class=n>i</span><span class=w> </span><span class=o>=</span><span class=w> </span><span class=mi>0</span><span class=p>;</span><span class=w> </span><span class=n>i</span><span class=w> </span><span class=o><</span><span class=w> </span><span class=n>tries</span><span class=p>;</span><span class=w> </span><span class=o>++</span><span class=n>i</span><span class=p>)</span>
</span><span id=__span-29-10><a id=__codelineno-29-10 name=__codelineno-29-10></a><span class=w> </span><span class=p>{</span>
</span><span id=__span-29-11><a id=__codelineno-29-11 name=__codelineno-29-11></a><span class=w> </span><span class=n>buffer</span><span class=p>.</span><span class=n>Add</span><span class=p>(</span><span class=n>i</span><span class=p>);</span>
</span><span id=__span-29-12><a id=__codelineno-29-12 name=__codelineno-29-12></a><span class=w> </span><span class=n>expected</span><span class=p>.</span><span class=n>Add</span><span class=p>(</span><span class=n>i</span><span class=p>);</span>
</span><span id=__span-29-13><a id=__codelineno-29-13 name=__codelineno-29-13></a><span class=w> </span><span class=n>CollectionAssert</span><span class=p>.</span><span class=n>AreEquivalent</span><span class=p>(</span><span class=n>expected</span><span class=p>,</span><span class=w> </span><span class=n>buffer</span><span class=p>);</span>
</span><span id=__span-29-14><a id=__codelineno-29-14 name=__codelineno-29-14></a><span class=w> </span><span class=p>}</span>
</span><span id=__span-29-15><a id=__codelineno-29-15 name=__codelineno-29-15></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h2 id=best-practices>Best Practices<a class=headerlink href=#best-practices title="Permanent link">¶</a></h2> <h3 id=identifying-impossible-states-to-test>Identifying "Impossible" States to Test<a class=headerlink href=#identifying-impossible-states-to-test title="Permanent link">¶</a></h3> <ol> <li><strong>Review defensive code paths</strong>: Any <code>if (x == null)</code> or <code>try-catch</code> suggests a potential "impossible" state</li> <li><strong>Examine switch statements</strong>: Missing <code>default</code> cases indicate unhandled enum values</li> <li><strong>Check serialization boundaries</strong>: Data crossing process/version boundaries can be corrupted</li> <li><strong>Consider Unity lifecycle</strong>: Objects can be destroyed at any frame</li> <li><strong>Look for race conditions</strong>: Multi-threaded code has timing-dependent states</li> </ol> <h3 id=test-structure>Test Structure<a class=headerlink href=#test-structure title="Permanent link">¶</a></h3> <p>Always include these categories in your tests:</p> <table> <thead> <tr> <th>Category</th> <th>Examples</th> </tr> </thead> <tbody> <tr> <td>Normal cases</td> <td>Typical usage, common inputs</td> </tr> <tr> <td>Edge cases</td> <td>Empty, single element, boundary values</td> </tr> <tr> <td>Negative cases</td> <td>Invalid inputs, error conditions</td> </tr> <tr> <td>Extreme cases</td> <td>Maximum values, large collections</td> </tr> <tr> <td><strong>"The Impossible"</strong></td> <td>Destroyed objects, invalid enums, corrupted data</td> </tr> </tbody> </table> <h3 id=unh-suppress-usage>UNH-SUPPRESS Usage<a class=headerlink href=#unh-suppress-usage title="Permanent link">¶</a></h3> <p>When testing destroyed object behavior, use the <code>// UNH-SUPPRESS</code> comment:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-30-1>1</a></span>
<span class=normal><a href=#__codelineno-30-2>2</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-30-1><a id=__codelineno-30-1 name=__codelineno-30-1></a><span class=c1>// UNH-SUPPRESS tells the test linter this DestroyImmediate is intentional</span>
</span><span id=__span-30-2><a id=__codelineno-30-2 name=__codelineno-30-2></a><span class=n>Object</span><span class=p>.</span><span class=n>DestroyImmediate</span><span class=p>(</span><span class=n>target</span><span class=p>);</span><span class=w> </span><span class=c1>// UNH-SUPPRESS: Test verifies behavior after destruction</span>
</span></code></pre></div></td></tr></table></div> <p>Only use this for intentional destruction testing, not for cleanup. Use <code>Track()</code> for normal test cleanup.</p> <h3 id=assertions-for-impossible-states>Assertions for "Impossible" States<a class=headerlink href=#assertions-for-impossible-states title="Permanent link">¶</a></h3> <p>Choose assertions based on expected behavior:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-31-1> 1</a></span>
<span class=normal><a href=#__codelineno-31-2> 2</a></span>
<span class=normal><a href=#__codelineno-31-3> 3</a></span>
<span class=normal><a href=#__codelineno-31-4> 4</a></span>
<span class=normal><a href=#__codelineno-31-5> 5</a></span>
<span class=normal><a href=#__codelineno-31-6> 6</a></span>
<span class=normal><a href=#__codelineno-31-7> 7</a></span>
<span class=normal><a href=#__codelineno-31-8> 8</a></span>
<span class=normal><a href=#__codelineno-31-9> 9</a></span>
<span class=normal><a href=#__codelineno-31-10>10</a></span>
<span class=normal><a href=#__codelineno-31-11>11</a></span>
<span class=normal><a href=#__codelineno-31-12>12</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-31-1><a id=__codelineno-31-1 name=__codelineno-31-1></a><span class=c1>// When graceful handling is expected</span>
</span><span id=__span-31-2><a id=__codelineno-31-2 name=__codelineno-31-2></a><span class=n>Assert</span><span class=p>.</span><span class=n>DoesNotThrow</span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>Process</span><span class=p>(</span><span class=n>invalidInput</span><span class=p>));</span>
</span><span id=__span-31-3><a id=__codelineno-31-3 name=__codelineno-31-3></a><span class=n>Assert</span><span class=p>.</span><span class=n>IsNotEmpty</span><span class=p>(</span><span class=n>invalidValue</span><span class=p>.</span><span class=n>ToDisplayName</span><span class=p>());</span>
</span><span id=__span-31-4><a id=__codelineno-31-4 name=__codelineno-31-4></a><span class=n>Assert</span><span class=p>.</span><span class=n>IsTrue</span><span class=p>(</span><span class=n>result</span><span class=w> </span><span class=o>==</span><span class=w> </span><span class=k>null</span><span class=p>);</span>
</span><span id=__span-31-5><a id=__codelineno-31-5 name=__codelineno-31-5></a>
</span><span id=__span-31-6><a id=__codelineno-31-6 name=__codelineno-31-6></a><span class=c1>// When exceptions are expected</span>
</span><span id=__span-31-7><a id=__codelineno-31-7 name=__codelineno-31-7></a><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>InvalidEnumArgumentException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>Serialize</span><span class=p>(</span><span class=n>msg</span><span class=p>,</span><span class=w> </span><span class=p>(</span><span class=n>SerializationType</span><span class=p>)</span><span class=mi>999</span><span class=p>));</span>
</span><span id=__span-31-8><a id=__codelineno-31-8 name=__codelineno-31-8></a><span class=n>Assert</span><span class=p>.</span><span class=n>Throws</span><span class=o><</span><span class=n>SerializationException</span><span class=o>></span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>Deserialize</span><span class=p>(</span><span class=n>corruptedData</span><span class=p>));</span>
</span><span id=__span-31-9><a id=__codelineno-31-9 name=__codelineno-31-9></a>
</span><span id=__span-31-10><a id=__codelineno-31-10 name=__codelineno-31-10></a><span class=c1>// When default values are expected</span>
</span><span id=__span-31-11><a id=__codelineno-31-11 name=__codelineno-31-11></a><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=k>default</span><span class=p>(</span><span class=n>T</span><span class=p>),</span><span class=w> </span><span class=n>result</span><span class=p>);</span>
</span><span id=__span-31-12><a id=__codelineno-31-12 name=__codelineno-31-12></a><span class=n>Assert</span><span class=p>.</span><span class=n>AreEqual</span><span class=p>(</span><span class=mi>0</span><span class=p>,</span><span class=w> </span><span class=n>deserializedFromEmpty</span><span class=p>.</span><span class=n>Id</span><span class=p>);</span>
</span></code></pre></div></td></tr></table></div> <h2 id=data-driven-testing-for-edge-cases>Data-Driven Testing for Edge Cases<a class=headerlink href=#data-driven-testing-for-edge-cases title="Permanent link">¶</a></h2> <p>Use <code>[TestCaseSource]</code> to systematically cover impossible states:</p> <div class="language-csharp highlight"><table class=highlighttable><tr><th colspan=2 class=filename><span class=filename>C#</span></th></tr><tr><td class=linenos><div class=linenodiv><pre><span></span><span class=normal><a href=#__codelineno-32-1> 1</a></span>
<span class=normal><a href=#__codelineno-32-2> 2</a></span>
<span class=normal><a href=#__codelineno-32-3> 3</a></span>
<span class=normal><a href=#__codelineno-32-4> 4</a></span>
<span class=normal><a href=#__codelineno-32-5> 5</a></span>
<span class=normal><a href=#__codelineno-32-6> 6</a></span>
<span class=normal><a href=#__codelineno-32-7> 7</a></span>
<span class=normal><a href=#__codelineno-32-8> 8</a></span>
<span class=normal><a href=#__codelineno-32-9> 9</a></span>
<span class=normal><a href=#__codelineno-32-10>10</a></span>
<span class=normal><a href=#__codelineno-32-11>11</a></span>
<span class=normal><a href=#__codelineno-32-12>12</a></span>
<span class=normal><a href=#__codelineno-32-13>13</a></span>
<span class=normal><a href=#__codelineno-32-14>14</a></span>
<span class=normal><a href=#__codelineno-32-15>15</a></span>
<span class=normal><a href=#__codelineno-32-16>16</a></span>
<span class=normal><a href=#__codelineno-32-17>17</a></span>
<span class=normal><a href=#__codelineno-32-18>18</a></span>
<span class=normal><a href=#__codelineno-32-19>19</a></span>
<span class=normal><a href=#__codelineno-32-20>20</a></span>
<span class=normal><a href=#__codelineno-32-21>21</a></span>
<span class=normal><a href=#__codelineno-32-22>22</a></span>
<span class=normal><a href=#__codelineno-32-23>23</a></span>
<span class=normal><a href=#__codelineno-32-24>24</a></span>
<span class=normal><a href=#__codelineno-32-25>25</a></span>
<span class=normal><a href=#__codelineno-32-26>26</a></span>
<span class=normal><a href=#__codelineno-32-27>27</a></span>
<span class=normal><a href=#__codelineno-32-28>28</a></span>
<span class=normal><a href=#__codelineno-32-29>29</a></span>
<span class=normal><a href=#__codelineno-32-30>30</a></span>
<span class=normal><a href=#__codelineno-32-31>31</a></span>
<span class=normal><a href=#__codelineno-32-32>32</a></span>
<span class=normal><a href=#__codelineno-32-33>33</a></span></pre></div></td><td class=code><div><pre><span></span><code><span id=__span-32-1><a id=__codelineno-32-1 name=__codelineno-32-1></a><span class=k>private</span><span class=w> </span><span class=k>static</span><span class=w> </span><span class=n>IEnumerable</span><span class=o><</span><span class=n>TestCaseData</span><span class=o>></span><span class=w> </span><span class=n>ImpossibleStateTestCases</span><span class=p>()</span>
</span><span id=__span-32-2><a id=__codelineno-32-2 name=__codelineno-32-2></a><span class=p>{</span>
</span><span id=__span-32-3><a id=__codelineno-32-3 name=__codelineno-32-3></a><span class=w> </span><span class=c1>// Destroyed references</span>
</span><span id=__span-32-4><a id=__codelineno-32-4 name=__codelineno-32-4></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=n>CreateDestroyedObject</span><span class=p>())</span>
</span><span id=__span-32-5><a id=__codelineno-32-5 name=__codelineno-32-5></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"State.DestroyedObject.HandledGracefully"</span><span class=p>);</span>
</span><span id=__span-32-6><a id=__codelineno-32-6 name=__codelineno-32-6></a>
</span><span id=__span-32-7><a id=__codelineno-32-7 name=__codelineno-32-7></a><span class=w> </span><span class=c1>// Invalid enums</span>
</span><span id=__span-32-8><a id=__codelineno-32-8 name=__codelineno-32-8></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>((</span><span class=n>MyEnum</span><span class=p>)(</span><span class=o>-</span><span class=mi>1</span><span class=p>))</span>
</span><span id=__span-32-9><a id=__codelineno-32-9 name=__codelineno-32-9></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"State.NegativeEnumValue.HandledGracefully"</span><span class=p>);</span>
</span><span id=__span-32-10><a id=__codelineno-32-10 name=__codelineno-32-10></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>((</span><span class=n>MyEnum</span><span class=p>)</span><span class=mi>999</span><span class=p>)</span>
</span><span id=__span-32-11><a id=__codelineno-32-11 name=__codelineno-32-11></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"State.LargeEnumValue.HandledGracefully"</span><span class=p>);</span>
</span><span id=__span-32-12><a id=__codelineno-32-12 name=__codelineno-32-12></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>((</span><span class=n>MyEnum</span><span class=p>)</span><span class=kt>int</span><span class=p>.</span><span class=n>MaxValue</span><span class=p>)</span>
</span><span id=__span-32-13><a id=__codelineno-32-13 name=__codelineno-32-13></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"State.MaxIntEnumValue.HandledGracefully"</span><span class=p>);</span>
</span><span id=__span-32-14><a id=__codelineno-32-14 name=__codelineno-32-14></a>
</span><span id=__span-32-15><a id=__codelineno-32-15 name=__codelineno-32-15></a><span class=w> </span><span class=c1>// Overflow values</span>
</span><span id=__span-32-16><a id=__codelineno-32-16 name=__codelineno-32-16></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=kt>int</span><span class=p>.</span><span class=n>MaxValue</span><span class=p>)</span>
</span><span id=__span-32-17><a id=__codelineno-32-17 name=__codelineno-32-17></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"State.IntMaxValue.HandledGracefully"</span><span class=p>);</span>
</span><span id=__span-32-18><a id=__codelineno-32-18 name=__codelineno-32-18></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=kt>int</span><span class=p>.</span><span class=n>MinValue</span><span class=p>)</span>
</span><span id=__span-32-19><a id=__codelineno-32-19 name=__codelineno-32-19></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"State.IntMinValue.HandledGracefully"</span><span class=p>);</span>
</span><span id=__span-32-20><a id=__codelineno-32-20 name=__codelineno-32-20></a>
</span><span id=__span-32-21><a id=__codelineno-32-21 name=__codelineno-32-21></a><span class=w> </span><span class=c1>// Corrupted strings</span>
</span><span id=__span-32-22><a id=__codelineno-32-22 name=__codelineno-32-22></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=s>"\0\0\0"</span><span class=p>)</span>
</span><span id=__span-32-23><a id=__codelineno-32-23 name=__codelineno-32-23></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"State.NullChars.HandledGracefully"</span><span class=p>);</span>
</span><span id=__span-32-24><a id=__codelineno-32-24 name=__codelineno-32-24></a><span class=w> </span><span class=k>yield</span><span class=w> </span><span class=k>return</span><span class=w> </span><span class=k>new</span><span class=w> </span><span class=nf>TestCaseData</span><span class=p>(</span><span class=k>new</span><span class=w> </span><span class=kt>string</span><span class=p>(</span><span class=err>'\</span><span class=n>uD800</span><span class=err>'</span><span class=p>,</span><span class=w> </span><span class=mi>1000</span><span class=p>))</span>
</span><span id=__span-32-25><a id=__codelineno-32-25 name=__codelineno-32-25></a><span class=w> </span><span class=p>.</span><span class=n>SetName</span><span class=p>(</span><span class=s>"State.InvalidSurrogates.HandledGracefully"</span><span class=p>);</span>
</span><span id=__span-32-26><a id=__codelineno-32-26 name=__codelineno-32-26></a><span class=p>}</span>
</span><span id=__span-32-27><a id=__codelineno-32-27 name=__codelineno-32-27></a>
</span><span id=__span-32-28><a id=__codelineno-32-28 name=__codelineno-32-28></a><span class=na>[Test]</span>
</span><span id=__span-32-29><a id=__codelineno-32-29 name=__codelineno-32-29></a><span class=na>[TestCaseSource(nameof(ImpossibleStateTestCases))]</span>
</span><span id=__span-32-30><a id=__codelineno-32-30 name=__codelineno-32-30></a><span class=k>public</span><span class=w> </span><span class=k>void</span><span class=w> </span><span class=nf>ProcessHandlesImpossibleStates</span><span class=p>(</span><span class=kt>object</span><span class=w> </span><span class=n>input</span><span class=p>)</span>
</span><span id=__span-32-31><a id=__codelineno-32-31 name=__codelineno-32-31></a><span class=p>{</span>
</span><span id=__span-32-32><a id=__codelineno-32-32 name=__codelineno-32-32></a><span class=w> </span><span class=n>Assert</span><span class=p>.</span><span class=n>DoesNotThrow</span><span class=p>(()</span><span class=w> </span><span class=o>=></span><span class=w> </span><span class=n>Process</span><span class=p>(</span><span class=n>input</span><span class=p>));</span>
</span><span id=__span-32-33><a id=__codelineno-32-33 name=__codelineno-32-33></a><span class=p>}</span>
</span></code></pre></div></td></tr></table></div> <h2 id=summary>Summary<a class=headerlink href=#summary title="Permanent link">¶</a></h2> <p>Testing "impossible" states is essential for robust production code. These tests:</p> <ol> <li><strong>Catch silent failures</strong> before they reach users</li> <li><strong>Document expected behavior</strong> for edge cases</li> <li><strong>Prevent regressions</strong> when code is refactored</li> <li><strong>Build confidence</strong> that defensive code works</li> </ol> <p>When adding new features, always ask: "What happens if this input is destroyed, null, invalid, or corrupted?" 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