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<a href="http://developer.yahoo.com/yui/"><h1>Yahoo! UI Library</h1></a>
<h3>yuitest&nbsp; <span class="subtitle">2.5.1</span></h3>
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&gt; ArrayAssert.js (source view)
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<div class="highlight" ><pre><span class="c">//-----------------------------------------------------------------------------</span>
<span class="c">// ArrayAssert object</span>
<span class="c">//-----------------------------------------------------------------------------</span>
<span class="c"></span>
<span class="c">/**</span>
<span class="c"> * The ArrayAssert object provides functions to test JavaScript array objects</span>
<span class="c"> * for a variety of cases.</span>
<span class="c"> *</span>
<span class="c"> * @namespace YAHOO.util</span>
<span class="c"> * @class ArrayAssert</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">ArrayAssert</span> <span class="o">=</span> <span class="o">{</span>
<span class="c">/**</span>
<span class="c"> * Asserts that a value is present in an array. This uses the triple equals </span>
<span class="c"> * sign so no type cohersion may occur.</span>
<span class="c"> * @param {Object} needle The value that is expected in the array.</span>
<span class="c"> * @param {Array} haystack An array of values.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method contains</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">contains</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">needle</span> <span class="c">/*:Object*/</span><span class="o">,</span> <span class="nx">haystack</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">found</span> <span class="c">/*:Boolean*/</span> <span class="o">=</span> <span class="kc">false</span><span class="o">;</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="c">//begin checking values</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">haystack</span><span class="o">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">found</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">haystack</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">===</span> <span class="nx">needle</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">found</span> <span class="o">=</span> <span class="kc">true</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(!</span><span class="nx">found</span><span class="o">){</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">fail</span><span class="o">(</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Value &quot;</span> <span class="o">+</span> <span class="nx">needle</span> <span class="o">+</span> <span class="s2">&quot; (&quot;</span> <span class="o">+</span> <span class="o">(</span><span class="k">typeof</span> <span class="nx">needle</span><span class="o">)</span> <span class="o">+</span> <span class="s2">&quot;) not found in array [&quot;</span> <span class="o">+</span> <span class="nx">haystack</span> <span class="o">+</span> <span class="s2">&quot;].&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that a set of values are present in an array. This uses the triple equals </span>
<span class="c"> * sign so no type cohersion may occur. For this assertion to pass, all values must</span>
<span class="c"> * be found.</span>
<span class="c"> * @param {Object[]} needles An array of values that are expected in the array.</span>
<span class="c"> * @param {Array} haystack An array of values to check.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method containsItems</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">containsItems</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">needles</span> <span class="c">/*:Object[]*/</span><span class="o">,</span> <span class="nx">haystack</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="c">//begin checking values</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">needles</span><span class="o">.</span><span class="nx">length</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="k">this</span><span class="o">.</span><span class="nx">contains</span><span class="o">(</span><span class="nx">needles</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span> <span class="nx">haystack</span><span class="o">,</span> <span class="nx">message</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that a value matching some condition is present in an array. This uses</span>
<span class="c"> * a function to determine a match.</span>
<span class="c"> * @param {Function} matcher A function that returns true if the items matches or false if not.</span>
<span class="c"> * @param {Array} haystack An array of values.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method containsMatch</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">containsMatch</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">matcher</span> <span class="c">/*:Function*/</span><span class="o">,</span> <span class="nx">haystack</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="c">//check for valid matcher</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="k">typeof</span> <span class="nx">matcher</span> <span class="o">!=</span> <span class="s2">&quot;function&quot;</span><span class="o">){</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="o">(</span><span class="s2">&quot;ArrayAssert.containsMatch(): First argument must be a function.&quot;</span><span class="o">);</span>
<span class="o">}</span>
<span class="k">var</span> <span class="nx">found</span> <span class="c">/*:Boolean*/</span> <span class="o">=</span> <span class="kc">false</span><span class="o">;</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="c">//begin checking values</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">haystack</span><span class="o">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">found</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">matcher</span><span class="o">(</span><span class="nx">haystack</span><span class="o">[</span><span class="nx">i</span><span class="o">]))</span> <span class="o">{</span>
<span class="nx">found</span> <span class="o">=</span> <span class="kc">true</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(!</span><span class="nx">found</span><span class="o">){</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">fail</span><span class="o">(</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;No match found in array [&quot;</span> <span class="o">+</span> <span class="nx">haystack</span> <span class="o">+</span> <span class="s2">&quot;].&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that a value is not present in an array. This uses the triple equals </span>
<span class="c"> * sign so no type cohersion may occur.</span>
<span class="c"> * @param {Object} needle The value that is expected in the array.</span>
<span class="c"> * @param {Array} haystack An array of values.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method doesNotContain</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">doesNotContain</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">needle</span> <span class="c">/*:Object*/</span><span class="o">,</span> <span class="nx">haystack</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">found</span> <span class="c">/*:Boolean*/</span> <span class="o">=</span> <span class="kc">false</span><span class="o">;</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="c">//begin checking values</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">haystack</span><span class="o">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">found</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">haystack</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">===</span> <span class="nx">needle</span><span class="o">)</span> <span class="o">{</span>
<span class="nx">found</span> <span class="o">=</span> <span class="kc">true</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">found</span><span class="o">){</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">fail</span><span class="o">(</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Value found in array [&quot;</span> <span class="o">+</span> <span class="nx">haystack</span> <span class="o">+</span> <span class="s2">&quot;].&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that a set of values are not present in an array. This uses the triple equals </span>
<span class="c"> * sign so no type cohersion may occur. For this assertion to pass, all values must</span>
<span class="c"> * not be found.</span>
<span class="c"> * @param {Object[]} needles An array of values that are not expected in the array.</span>
<span class="c"> * @param {Array} haystack An array of values to check.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method doesNotContainItems</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">doesNotContainItems</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">needles</span> <span class="c">/*:Object[]*/</span><span class="o">,</span> <span class="nx">haystack</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">needles</span><span class="o">.</span><span class="nx">length</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="k">this</span><span class="o">.</span><span class="nx">doesNotContain</span><span class="o">(</span><span class="nx">needles</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span> <span class="nx">haystack</span><span class="o">,</span> <span class="nx">message</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that no values matching a condition are present in an array. This uses</span>
<span class="c"> * a function to determine a match.</span>
<span class="c"> * @param {Function} matcher A function that returns true if the items matches or false if not.</span>
<span class="c"> * @param {Array} haystack An array of values.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method doesNotContainMatch</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">doesNotContainMatch</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">matcher</span> <span class="c">/*:Function*/</span><span class="o">,</span> <span class="nx">haystack</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="c">//check for valid matcher</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="k">typeof</span> <span class="nx">matcher</span> <span class="o">!=</span> <span class="s2">&quot;function&quot;</span><span class="o">){</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="o">(</span><span class="s2">&quot;ArrayAssert.doesNotContainMatch(): First argument must be a function.&quot;</span><span class="o">);</span>
<span class="o">}</span>
<span class="k">var</span> <span class="nx">found</span> <span class="c">/*:Boolean*/</span> <span class="o">=</span> <span class="kc">false</span><span class="o">;</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="c">//begin checking values</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">haystack</span><span class="o">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">found</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">matcher</span><span class="o">(</span><span class="nx">haystack</span><span class="o">[</span><span class="nx">i</span><span class="o">]))</span> <span class="o">{</span>
<span class="nx">found</span> <span class="o">=</span> <span class="kc">true</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">found</span><span class="o">){</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">fail</span><span class="o">(</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Value found in array [&quot;</span> <span class="o">+</span> <span class="nx">haystack</span> <span class="o">+</span> <span class="s2">&quot;].&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that the given value is contained in an array at the specified index.</span>
<span class="c"> * This uses the triple equals sign so no type cohersion will occur.</span>
<span class="c"> * @param {Object} needle The value to look for.</span>
<span class="c"> * @param {Array} haystack The array to search in.</span>
<span class="c"> * @param {int} index The index at which the value should exist.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method indexOf</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">indexOf</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">needle</span> <span class="c">/*:Object*/</span><span class="o">,</span> <span class="nx">haystack</span> <span class="c">/*:Array*/</span><span class="o">,</span> <span class="nx">index</span> <span class="c">/*:int*/</span><span class="o">,</span> <span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="c">//try to find the value in the array</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">haystack</span><span class="o">.</span><span class="nx">length</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">haystack</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">===</span> <span class="nx">needle</span><span class="o">){</span>
<span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">areEqual</span><span class="o">(</span><span class="nx">index</span><span class="o">,</span> <span class="nx">i</span><span class="o">,</span> <span class="nx">message</span> <span class="o">||</span> <span class="s2">&quot;Value exists at index &quot;</span> <span class="o">+</span> <span class="nx">i</span> <span class="o">+</span> <span class="s2">&quot; but should be at index &quot;</span> <span class="o">+</span> <span class="nx">index</span> <span class="o">+</span> <span class="s2">&quot;.&quot;</span><span class="o">);</span>
<span class="k">return</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="c">//if it makes it here, it wasn&#39;t found at all</span>
<span class="c"></span> <span class="nx">Assert</span><span class="o">.</span><span class="nx">fail</span><span class="o">(</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Value doesn&#39;t exist in array [&quot;</span> <span class="o">+</span> <span class="nx">haystack</span> <span class="o">+</span> <span class="s2">&quot;].&quot;</span><span class="o">));</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that the values in an array are equal, and in the same position,</span>
<span class="c"> * as values in another array. This uses the double equals sign</span>
<span class="c"> * so type cohersion may occur. Note that the array objects themselves</span>
<span class="c"> * need not be the same for this test to pass.</span>
<span class="c"> * @param {Array} expected An array of the expected values.</span>
<span class="c"> * @param {Array} actual Any array of the actual values.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method itemsAreEqual</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">itemsAreEqual</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">expected</span> <span class="c">/*:Array*/</span><span class="o">,</span> <span class="nx">actual</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="c">//one may be longer than the other, so get the maximum length</span>
<span class="c"></span> <span class="k">var</span> <span class="nx">len</span> <span class="c">/*:int*/</span> <span class="o">=</span> <span class="nb">Math</span><span class="o">.</span><span class="nx">max</span><span class="o">(</span><span class="nx">expected</span><span class="o">.</span><span class="nx">length</span><span class="o">,</span> <span class="nx">actual</span><span class="o">.</span><span class="nx">length</span><span class="o">);</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="c">//begin checking values</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">len</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">areEqual</span><span class="o">(</span><span class="nx">expected</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span> <span class="nx">actual</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Values in position &quot;</span> <span class="o">+</span> <span class="nx">i</span> <span class="o">+</span> <span class="s2">&quot; are not equal.&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that the values in an array are equivalent, and in the same position,</span>
<span class="c"> * as values in another array. This uses a function to determine if the values</span>
<span class="c"> * are equivalent. Note that the array objects themselves</span>
<span class="c"> * need not be the same for this test to pass.</span>
<span class="c"> * @param {Array} expected An array of the expected values.</span>
<span class="c"> * @param {Array} actual Any array of the actual values.</span>
<span class="c"> * @param {Function} comparator A function that returns true if the values are equivalent</span>
<span class="c"> * or false if not.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @return {Void}</span>
<span class="c"> * @method itemsAreEquivalent</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">itemsAreEquivalent</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">expected</span> <span class="c">/*:Array*/</span><span class="o">,</span> <span class="nx">actual</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">comparator</span> <span class="c">/*:Function*/</span><span class="o">,</span> <span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="c">//make sure the comparator is valid</span>
<span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="k">typeof</span> <span class="nx">comparator</span> <span class="o">!=</span> <span class="s2">&quot;function&quot;</span><span class="o">){</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="o">(</span><span class="s2">&quot;ArrayAssert.itemsAreEquivalent(): Third argument must be a function.&quot;</span><span class="o">);</span>
<span class="o">}</span>
<span class="c">//one may be longer than the other, so get the maximum length</span>
<span class="c"></span> <span class="k">var</span> <span class="nx">len</span> <span class="c">/*:int*/</span> <span class="o">=</span> <span class="nb">Math</span><span class="o">.</span><span class="nx">max</span><span class="o">(</span><span class="nx">expected</span><span class="o">.</span><span class="nx">length</span><span class="o">,</span> <span class="nx">actual</span><span class="o">.</span><span class="nx">length</span><span class="o">);</span>
<span class="c">//begin checking values</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">len</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="k">if</span> <span class="o">(!</span><span class="nx">comparator</span><span class="o">(</span><span class="nx">expected</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span> <span class="nx">actual</span><span class="o">[</span><span class="nx">i</span><span class="o">])){</span>
<span class="k">throw</span> <span class="k">new</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">ComparisonFailure</span><span class="o">(</span><span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Values in position &quot;</span> <span class="o">+</span> <span class="nx">i</span> <span class="o">+</span> <span class="s2">&quot; are not equivalent.&quot;</span><span class="o">),</span> <span class="nx">expected</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span> <span class="nx">actual</span><span class="o">[</span><span class="nx">i</span><span class="o">]);</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that an array is empty.</span>
<span class="c"> * @param {Array} actual The array to test.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method isEmpty</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">isEmpty</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">actual</span> <span class="c">/*:Array*/</span><span class="o">,</span> <span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">actual</span><span class="o">.</span><span class="nx">length</span> <span class="o">&gt;</span> <span class="m">0</span><span class="o">){</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">fail</span><span class="o">(</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Array should be empty.&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that an array is not empty.</span>
<span class="c"> * @param {Array} actual The array to test.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method isNotEmpty</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">isNotEmpty</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">actual</span> <span class="c">/*:Array*/</span><span class="o">,</span> <span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">actual</span><span class="o">.</span><span class="nx">length</span> <span class="o">===</span> <span class="m">0</span><span class="o">){</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">fail</span><span class="o">(</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Array should not be empty.&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that the values in an array are the same, and in the same position,</span>
<span class="c"> * as values in another array. This uses the triple equals sign</span>
<span class="c"> * so no type cohersion will occur. Note that the array objects themselves</span>
<span class="c"> * need not be the same for this test to pass.</span>
<span class="c"> * @param {Array} expected An array of the expected values.</span>
<span class="c"> * @param {Array} actual Any array of the actual values.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method itemsAreSame</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">itemsAreSame</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">expected</span> <span class="c">/*:Array*/</span><span class="o">,</span> <span class="nx">actual</span> <span class="c">/*:Array*/</span><span class="o">,</span>
<span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="c">//one may be longer than the other, so get the maximum length</span>
<span class="c"></span> <span class="k">var</span> <span class="nx">len</span> <span class="c">/*:int*/</span> <span class="o">=</span> <span class="nb">Math</span><span class="o">.</span><span class="nx">max</span><span class="o">(</span><span class="nx">expected</span><span class="o">.</span><span class="nx">length</span><span class="o">,</span> <span class="nx">actual</span><span class="o">.</span><span class="nx">length</span><span class="o">);</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="c">//begin checking values</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">len</span><span class="o">;</span> <span class="nx">i</span><span class="o">++){</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">areSame</span><span class="o">(</span><span class="nx">expected</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span> <span class="nx">actual</span><span class="o">[</span><span class="nx">i</span><span class="o">],</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Values in position &quot;</span> <span class="o">+</span> <span class="nx">i</span> <span class="o">+</span> <span class="s2">&quot; are not the same.&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">},</span>
<span class="c">/**</span>
<span class="c"> * Asserts that the given value is contained in an array at the specified index,</span>
<span class="c"> * starting from the back of the array.</span>
<span class="c"> * This uses the triple equals sign so no type cohersion will occur.</span>
<span class="c"> * @param {Object} needle The value to look for.</span>
<span class="c"> * @param {Array} haystack The array to search in.</span>
<span class="c"> * @param {int} index The index at which the value should exist.</span>
<span class="c"> * @param {String} message (Optional) The message to display if the assertion fails.</span>
<span class="c"> * @method lastIndexOf</span>
<span class="c"> * @static</span>
<span class="c"> */</span>
<span class="nx">lastIndexOf</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">needle</span> <span class="c">/*:Object*/</span><span class="o">,</span> <span class="nx">haystack</span> <span class="c">/*:Array*/</span><span class="o">,</span> <span class="nx">index</span> <span class="c">/*:int*/</span><span class="o">,</span> <span class="nx">message</span> <span class="c">/*:String*/</span><span class="o">)</span> <span class="c">/*:Void*/</span> <span class="o">{</span>
<span class="k">var</span> <span class="nx">Assert</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Assert</span><span class="o">;</span>
<span class="c">//try to find the value in the array</span>
<span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span><span class="o">=</span><span class="nx">haystack</span><span class="o">.</span><span class="nx">length</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&gt;=</span> <span class="m">0</span><span class="o">;</span> <span class="nx">i</span><span class="o">--){</span>
<span class="k">if</span> <span class="o">(</span><span class="nx">haystack</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">===</span> <span class="nx">needle</span><span class="o">){</span>
<span class="nx">Assert</span><span class="o">.</span><span class="nx">areEqual</span><span class="o">(</span><span class="nx">index</span><span class="o">,</span> <span class="nx">i</span><span class="o">,</span> <span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Value exists at index &quot;</span> <span class="o">+</span> <span class="nx">i</span> <span class="o">+</span> <span class="s2">&quot; but should be at index &quot;</span> <span class="o">+</span> <span class="nx">index</span> <span class="o">+</span> <span class="s2">&quot;.&quot;</span><span class="o">));</span>
<span class="k">return</span><span class="o">;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="c">//if it makes it here, it wasn&#39;t found at all</span>
<span class="c"></span> <span class="nx">Assert</span><span class="o">.</span><span class="nx">fail</span><span class="o">(</span><span class="nx">Assert</span><span class="o">.</span><span class="nx">_formatMessage</span><span class="o">(</span><span class="nx">message</span><span class="o">,</span> <span class="s2">&quot;Value doesn&#39;t exist in array.&quot;</span><span class="o">));</span>
<span class="o">}</span>
<span class="o">};</span>
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