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<div id="ygma"><a href="../../"><img src="../../assets/logo.gif" border="0" width="200" height="93"></a></div> |
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<div id="pagetitle"><h1>YUI Library Examples: Test: Asynchronous Event Testing</h1></div> |
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<div id="bar-note"><p><strong>Note:</strong> This is YUI 3.x. Looking for <a href="http://developer.yahoo.com/yui/">YUI 2.x</a>?</p></div> |
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<div class="yui-u first example" id="main"> |
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<h2>Test: Asynchronous Event Testing</h2> |
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<div id="example" class="promo"> |
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<p> |
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<p>This example shows how to create an asynchronous test with the YUI Test framework for testing browser-based JavaScript code. |
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A code>Y.Test.Case</code></a> object is created to test the |
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<code>Y.Anim</code> object. The test waits until the animation is complete |
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before checking the settings of the animated element.</p> </p> |
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<div class="module example-container "> |
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<p class="newWindowButton yui-skin-sam"> |
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<a href="test-async-event-tests_clean.html" target="_blank">View example in new window.</a> |
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</p> |
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</div> <div id="example-canvas" class="bd"> |
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<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== --> |
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<div id="testLogger"></div> |
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<div id="testDiv" style="position:absolute;width:10px;height:10px; background-color:red"></div> |
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<script type="text/javascript"> |
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YUI({base:"../../build/", timeout: 10000}).use("anim", "console", "test",function (Y) { |
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Y.namespace("example.test"); |
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Y.example.test.AsyncTestCase = new Y.Test.Case({ |
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//name of the test case - if not provided, one is auto-generated |
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name : "Animation Tests", |
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//--------------------------------------------------------------------- |
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// Test methods - names must begin with "test" |
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//--------------------------------------------------------------------- |
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testAnimation : function (){ |
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var myAnim = new Y.Anim({ |
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node: '#testDiv', |
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to: { |
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width: 400 |
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}, |
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duration: 3, |
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easing: Y.Easing.easeOut |
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}); |
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//assign oncomplete handler |
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myAnim.on("end", function(){ |
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//tell the TestRunner to resume |
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this.resume(function(){ |
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Y.Assert.areEqual(document.getElementById("testDiv").offsetWidth, 400, "Width of the DIV should be 400."); |
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}); |
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}, this, true); |
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//start the animation |
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myAnim.run(); |
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//wait until something happens |
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this.wait(); |
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} |
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}); |
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//create the console |
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var r = new Y.Console({ |
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verbose : true, |
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newestOnTop : false |
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}); |
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r.render('#testLogger'); |
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//create the logger |
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Y.Test.Runner.add(Y.example.test.AsyncTestCase); |
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//run the tests |
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Y.Test.Runner.run(); |
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}); |
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</script> |
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<!--END SOURCE CODE FOR EXAMPLE =============================== --> |
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</div> |
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</div> |
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</div> |
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<h2 class="first">Asynchronous Events Test Example</h2> |
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<p>This example begins by creating a namespace:</p> |
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<textarea name="code" class="JScript" cols="60" rows="1"> |
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Y.namespace("example.test"); |
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</textarea> |
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<p>This namespace serves as the core object upon which others will be added (to prevent creating global objects).</p> |
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<h3>Creating the TestCase</h3> |
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<p>The first step is to create a new <code>Y.Test.Case</code>object called <code>AsyncTestCase</code>. |
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To do so, using the <code>Y.Test.Case</code>constructor and pass in an object literal containing information about the tests to be run:</p> |
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<textarea name="code" class="JScript" cols="60" rows="1"> |
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Y.example.test.AsyncTestCase = new Y.Test.Case({ |
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//name of the test case - if not provided, one is auto-generated |
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name : "Animation Tests", |
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//--------------------------------------------------------------------- |
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// Test methods - names must begin with "test" |
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//--------------------------------------------------------------------- |
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testAnimation : function (){ |
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var myAnim = new Y.Anim({ |
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node: '#testDiv', |
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to: { |
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width: 400 |
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}, |
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duration: 3, |
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easing: Y.Easing.easeOut |
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}); |
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//assign oncomplete handler |
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myAnim.on("end", function(){ |
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//tell the TestRunner to resume |
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this.resume(function(){ |
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Y.Assert.areEqual(document.getElementById("testDiv").offsetWidth, 400, "Width of the DIV should be 400."); |
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}); |
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}, this, true); |
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//start the animation |
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myAnim.run(); |
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//wait until something happens |
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this.wait(); |
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} |
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}); |
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</textarea> |
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<p>The only test in the <code>Y.Test.Case</code>is called <code>testAnimation</code>. It begins by creating a new |
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<code>Anim</code> object that will animate the width of a <code>div</code> to 400 pixels over three seconds. An |
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event handler is assigned to the <code>Anim</code> object's <code>end</code> event, within which the |
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<code>resume()</code> method is called. A function is passed into the <code>resume()</code> method to indicate |
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the code to run when the test resumes, which is a test to make sure the width is 400 pixels. After that, the |
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<code>run()</code> method is called to begin the animation and the <code>wait()</code> method is called to |
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tell the <code>Y.Test.Runner</code> to wait until it is told to resume testing again. When the animation completes, |
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the <code>end</code> event is fired and the test resumes, assuring that the width is correct.</p> |
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<h3>Running the tests</h3> |
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<p>With all of the tests defined, the last step is to run them:</p> |
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<textarea name="code" class="JScript" cols="60" rows="1"> |
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//create the console |
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var r = new Y.Console({ |
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verbose : true, |
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newestOnTop : false |
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}); |
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r.render('#testLogger'); |
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//create the logger |
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Y.Test.Runner.add(Y.example.test.AsyncTestCase); |
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//run the tests |
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Y.Test.Runner.run(); |
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</textarea> |
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<p>Before running the tests, it's necessary to create a <code>Y.Console</code> object to display the results (otherwise the tests would run |
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but you wouldn't see the results). After that, the <code>Y.Test.Runner</code> is loaded with the <code>Y.Test.Case</code>object by calling |
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<code>add()</code> (any number of <code>Y.Test.Case</code>and <code>TestSuite</code> objects can be added to a <code>Y.Test.Runner</code>, |
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this example only adds one for simplicity). The very last step is to call <code>run()</code>, which begins executing the tests in its |
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queue and displays the results in the <code>Y.Console</code>.</p> </div> |
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<div id="examples" class="mod box4"> |
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<div class="hd"> |
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<h4> |
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Test Examples:</h4> |
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</div> |
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<div class="bd"> |
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<ul> |
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<li><a href='../test/test-simple-example.html'>Simple Testing Example</a></li><li><a href='../test/test-advanced-test-options.html'>Advanced Test Options</a></li><li><a href='../test/test-array-tests.html'>Array Processing</a></li><li><a href='../test/test-async-test.html'>Asynchronous Testing</a></li><li class='selected'><a href='../test/test-async-event-tests.html'>Asynchronous Event Testing</a></li> </ul> |
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</div> |
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</div> |
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<div class="mod box4"> |
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<div class="hd"> |
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<h4>More Test Resources:</h4> |
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</div> |
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<ul> |
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<!-- <li><a href="http://developer.yahoo.com/yui/test/">User's Guide</a> (external)</li> --> |
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<li><a href="../../api/module_test.html">API Documentation</a></li> |
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</ul> |
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<!-- TABLE OF CONTENTS --> |
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<li class="sect first">YUI 3.x Project</li><li class="item"><a title="The Yahoo! 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<p class="first">Copyright © 2009 Yahoo! Inc. All rights reserved.</p> |
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</body> |
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</html> |