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5 <title>YUI Library Examples: Test: Asynchronous Event Testing</title> |
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43 <div id="ygma"><a href="../../"><img src="../../assets/logo.gif" border="0" width="200" height="93"></a></div> |
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44 <div id="pagetitle"><h1>YUI Library Examples: Test: Asynchronous Event Testing</h1></div> |
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45 </div> |
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46 <div id="bd"> |
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47 |
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48 <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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49 |
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50 <div id="yui-main"> |
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51 <div class="yui-b"> |
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52 <div class="yui-ge"> |
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53 <div class="yui-u first example" id="main"> |
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54 |
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55 <h2>Test: Asynchronous Event Testing</h2> |
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56 |
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57 <div id="example" class="promo"> |
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58 <p> |
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59 <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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60 A code>Y.Test.Case</code></a> object is created to test the |
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61 <code>Y.Anim</code> object. The test waits until the animation is complete |
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62 before checking the settings of the animated element.</p> </p> |
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63 |
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64 <div class="module example-container "> |
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65 <div class="hd exampleHd"> |
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66 <p class="newWindowButton yui-skin-sam"> |
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67 <a href="test-async-event-tests_clean.html" target="_blank">View example in new window.</a> |
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68 </p> |
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69 </div> <div id="example-canvas" class="bd"> |
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70 |
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71 |
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72 <!--BEGIN SOURCE CODE FOR EXAMPLE =============================== --> |
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73 |
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74 <div id="testLogger"></div> |
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75 <div id="testDiv" style="position:absolute;width:10px;height:10px; background-color:red"></div> |
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76 <script type="text/javascript"> |
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77 YUI({base:"../../build/", timeout: 10000}).use("anim", "console", "test",function (Y) { |
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78 |
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79 Y.namespace("example.test"); |
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80 |
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81 Y.example.test.AsyncTestCase = new Y.Test.Case({ |
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82 |
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83 //name of the test case - if not provided, one is auto-generated |
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84 name : "Animation Tests", |
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85 |
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86 //--------------------------------------------------------------------- |
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87 // Test methods - names must begin with "test" |
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88 //--------------------------------------------------------------------- |
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89 |
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90 testAnimation : function (){ |
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91 |
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92 var myAnim = new Y.Anim({ |
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93 node: '#testDiv', |
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94 to: { |
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95 width: 400 |
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96 }, |
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97 duration: 3, |
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98 easing: Y.Easing.easeOut |
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99 }); |
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100 |
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101 //assign oncomplete handler |
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102 myAnim.on("end", function(){ |
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103 |
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104 //tell the TestRunner to resume |
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105 this.resume(function(){ |
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106 |
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107 Y.Assert.areEqual(document.getElementById("testDiv").offsetWidth, 400, "Width of the DIV should be 400."); |
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108 |
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109 }); |
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110 |
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111 }, this, true); |
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112 |
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113 //start the animation |
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114 myAnim.run(); |
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115 |
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116 //wait until something happens |
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117 this.wait(); |
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118 |
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119 } |
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120 |
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121 }); |
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122 |
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123 //create the console |
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124 var r = new Y.Console({ |
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125 verbose : true, |
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126 newestOnTop : false |
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127 }); |
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128 |
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129 r.render('#testLogger'); |
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130 |
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131 //create the logger |
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132 Y.Test.Runner.add(Y.example.test.AsyncTestCase); |
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133 |
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134 //run the tests |
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135 Y.Test.Runner.run(); |
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136 }); |
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137 |
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138 </script> |
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139 |
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140 <!--END SOURCE CODE FOR EXAMPLE =============================== --> |
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141 |
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142 |
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143 </div> |
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144 </div> |
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145 </div> |
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146 |
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147 <h2 class="first">Asynchronous Events Test Example</h2> |
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148 |
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149 <p>This example begins by creating a namespace:</p> |
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150 <textarea name="code" class="JScript" cols="60" rows="1"> |
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151 Y.namespace("example.test"); |
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152 </textarea> |
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153 <p>This namespace serves as the core object upon which others will be added (to prevent creating global objects).</p> |
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154 |
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155 <h3>Creating the TestCase</h3> |
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156 |
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157 <p>The first step is to create a new <code>Y.Test.Case</code>object called <code>AsyncTestCase</code>. |
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158 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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159 <textarea name="code" class="JScript" cols="60" rows="1"> |
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160 Y.example.test.AsyncTestCase = new Y.Test.Case({ |
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161 |
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162 //name of the test case - if not provided, one is auto-generated |
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163 name : "Animation Tests", |
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164 |
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165 //--------------------------------------------------------------------- |
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166 // Test methods - names must begin with "test" |
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167 //--------------------------------------------------------------------- |
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168 |
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169 testAnimation : function (){ |
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170 |
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171 var myAnim = new Y.Anim({ |
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172 node: '#testDiv', |
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173 to: { |
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174 width: 400 |
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175 }, |
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176 duration: 3, |
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177 easing: Y.Easing.easeOut |
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178 }); |
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179 |
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180 //assign oncomplete handler |
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181 myAnim.on("end", function(){ |
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182 |
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183 //tell the TestRunner to resume |
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184 this.resume(function(){ |
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185 |
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186 Y.Assert.areEqual(document.getElementById("testDiv").offsetWidth, 400, "Width of the DIV should be 400."); |
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187 |
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188 }); |
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189 |
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190 }, this, true); |
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191 |
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192 //start the animation |
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193 myAnim.run(); |
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194 |
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195 //wait until something happens |
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196 this.wait(); |
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197 |
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198 } |
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199 |
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200 }); |
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201 |
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202 </textarea> |
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203 <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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204 <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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205 event handler is assigned to the <code>Anim</code> object's <code>end</code> event, within which the |
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206 <code>resume()</code> method is called. A function is passed into the <code>resume()</code> method to indicate |
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207 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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208 <code>run()</code> method is called to begin the animation and the <code>wait()</code> method is called to |
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209 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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210 the <code>end</code> event is fired and the test resumes, assuring that the width is correct.</p> |
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211 <h3>Running the tests</h3> |
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212 |
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213 <p>With all of the tests defined, the last step is to run them:</p> |
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214 |
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215 <textarea name="code" class="JScript" cols="60" rows="1"> |
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216 //create the console |
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217 var r = new Y.Console({ |
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218 verbose : true, |
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219 newestOnTop : false |
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220 }); |
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221 |
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222 r.render('#testLogger'); |
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223 |
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224 //create the logger |
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225 Y.Test.Runner.add(Y.example.test.AsyncTestCase); |
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226 |
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227 //run the tests |
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228 Y.Test.Runner.run(); |
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229 </textarea> |
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230 |
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231 <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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232 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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233 <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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234 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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235 queue and displays the results in the <code>Y.Console</code>.</p> </div> |
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236 <div class="yui-u sidebar"> |
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237 |
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238 |
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239 <div id="examples" class="mod box4"> |
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240 <div class="hd"> |
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241 <h4> |
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242 Test Examples:</h4> |
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243 </div> |
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244 <div class="bd"> |
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245 <ul> |
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246 <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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247 </div> |
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248 </div> |
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249 |
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251 <div class="hd"> |
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252 <h4>More Test Resources:</h4> |
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