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<h1>RedisjsClientMock.ts</h1>
<h1> Software Design Document (SDD) for RedisjsClientMock.ts</h1>
<h2>Introduction and Overview</h2>
<p>The <code>RedisjsClientMock</code> is a mock implementation of the <code>RedisClient</code> interface defined in the <code>../interfaces/RedisClient</code> module. This class is used as a test double for testing purposes, allowing developers to simulate the behavior of the actual <code>RedisClient</code> without interacting with a real Redis server.</p>
<h2>System Architecture</h2>
<h3>Class Diagram</h3>
<pre><code class="language-lua"> +-------------------+
| RedisjsClientMock |
+-----------+
| - set: |
| SinonStub; |
| - eval: |
| |
| - constructor() |
+-----------+
</code></pre>
<h2>Data Design</h2>
<p>There are no data design elements to discuss as the code does not interact with any databases or external data sources.</p>
<h2>Interface Design</h2>
<p>The <code>RedisjsClientMock</code> class implements the <code>RedisClient</code> interface defined in the <code>../interfaces/RedisClient</code> module. This interface defines two methods: <code>set(key: string, value: any): void</code> and <code>eval(command: string): void</code>.</p>
<h2>Component Design</h2>
<p>The <code>RedisjsClientMock</code> class does not have any components as it is a simple class with only two methods.</p>
<h2>User Interface Design</h2>
<p>As this is a mock implementation, there is no user interface design to discuss. The focus of the mock implementation is solely on simulating the behavior of the <code>RedisClient</code> interface for testing purposes.</p>
<h2>Assumptions and Dependencies</h2>
<p>The assumptions made in this code are that the <code>set(key: string, value: any): void</code> and <code>eval(command: string): void</code> methods should throw an error when called. This assumption is likely made to ensure that the mock implementation behaves consistently with the behavior of the actual <code>RedisClient</code> class.</p>
<p>There are no dependencies on external libraries or modules in this code, as the focus is solely on creating a test double for the <code>RedisClient</code> interface.</p>
<h2>Glossary of Terms</h2>
<ul>
<li><strong>Test Double</strong>: A class that is used to simulate the behavior of another class during testing. In this case, the <code>RedisjsClientMock</code> is a test double for the <code>RedisClient</code> interface.</li>
<li><strong>SinonStub</strong>: A stub function provided by the Sinon library. A stub function allows you to define how a particular method or function should behave in a specific context. In this case, the <code>set(key: string, value: any): void</code> and <code>eval(command: string): void</code> methods are defined as stub functions using the Sinon <code>stub()</code> method.</li>
<li><strong>RedisClient</strong>: An interface that defines the methods that can be called on an object representing a Redis client. In this case, the <code>RedisjsClientMock</code> class implements this interface to create a mock implementation of a Redis client.</li>
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