unexpected
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Extensible BDD assertion toolkit
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<h3>any</h3>
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<a href="../../any/to-be">to be</a>
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<a href="../../any/to-be-a">to be a</a>
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<a href="../../any/to-be-defined">to be defined</a>
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<h3>string</h3>
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<a href="../to-be">to be</a>
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<a href="">to be empty</a>
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<a href="../to-be-greater-than">to be greater than</a>
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<a href="../to-be-non-empty">to be non-empty</a>
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<a href="../to-be-within">to be within</a>
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<a href="../to-begin-with">to begin with</a>
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<a href="../to-end-with">to end with</a>
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<h3>number</h3>
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<a href="../../number/to-be-close-to">to be close to</a>
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<a href="../../number/to-be-finite">to be finite</a>
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<a href="../../number/to-be-infinite">to be infinite</a>
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<a href="../../number/to-be-less-than">to be less than</a>
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<a href="../../number/to-be-less-than-or-equal-to">to be less than or equal to</a>
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<a href="../../number/to-be-NaN">to be NaN</a>
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<a href="../../number/to-be-negative">to be negative</a>
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<a href="../../number/to-be-positive">to be positive</a>
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<a href="../../number/to-be-within">to be within</a>
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<h3>boolean</h3>
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<a href="../../boolean/to-be-false">to be false</a>
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<h3>object</h3>
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<a href="../../object/to-have-key">to have key</a>
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<a href="../../object/to-have-keys">to have keys</a>
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<a href="../../object/to-have-properties">to have properties</a>
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<a href="../../object/to-have-property">to have property</a>
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<h3>function</h3>
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<a href="../../function/to-call-the-callback">to call the callback</a>
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<a href="../../Promise/to-be-fulfilled">to be fulfilled</a>
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<a href="../../Error/to-have-message">to have message</a>
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<h3>array-like</h3>
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<a href="../../array-like/to-be-empty">to be empty</a>
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<a href="../../array-like/to-be-non-empty">to be non-empty</a>
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<a href="../../array-like/to-contain">to contain</a>
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<a href="../../array-like/to-have-items-satisfying">to have items satisfying</a>
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<a href="../../array-like/when-passed-as-parameters-to">when passed as parameters to</a>
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<h3>Buffer</h3>
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<a href="../../Buffer/when-decoded-as">when decoded as</a>
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<h1>to be empty</h1>
<p>Asserts that the string is empty.</p>
<p>Aliases: <code>to be the empty string</code>, <code>to be an empty string</code></p>
<div class="code lang-javascript">
<div><span style="color: #000000">expect</span><span style="color: #000000">(</span><span style="color: #df5000">''</span><span style="color: #000000">,</span> <span style="color: #df5000">'to be empty'</span><span style="color: #000000">);</span></div>
</div><p>In case of a failing expectation you get the following output:</p>
<div class="code lang-javascript">
<div><span style="color: #000000">expect</span><span style="color: #000000">(</span><span style="color: #df5000">'Hello world'</span><span style="color: #000000">,</span> <span style="color: #df5000">'to be empty'</span><span style="color: #000000">);</span></div>
</div><div class="output">
<div><span style="color: red; font-weight: bold">expected</span> <span style="color: #df5000">'Hello world'</span> <span style="color: red; font-weight: bold">to be empty</span></div>
</div><p>This assertion can be negated using the <code>not</code> flag:</p>
<div class="code lang-javascript">
<div><span style="color: #000000">expect</span><span style="color: #000000">(</span><span style="color: #df5000">'Hello world'</span><span style="color: #000000">,</span> <span style="color: #df5000">'not to be empty'</span><span style="color: #000000">);</span></div>
</div><p>In case of a failing expectation you get the following output:</p>
<div class="code lang-javascript">
<div><span style="color: #000000">expect</span><span style="color: #000000">(</span><span style="color: #df5000">''</span><span style="color: #000000">,</span> <span style="color: #df5000">'not to be empty'</span><span style="color: #000000">);</span></div>
</div><div class="output">
<div><span style="color: red; font-weight: bold">expected</span> <span style="color: #df5000">''</span> <span style="color: red; font-weight: bold">not to be empty</span></div>
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