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<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Array Processing</title>
<style type="text/css">
/*margin and padding on body element
can introduce errors in determining
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body {
margin:0;
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}
</style>
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<body class=" yui-skin-sam">
<h1>Array Processing</h1>
<div class="exampleIntro">
<p>This example shows how to use the <a href="/yui/yuitest/#arrayassert"><code>ArrayAssert</code></a> object, which
contains assertions designed to be used specifically with JavaScript Arrays and array-like objects.</p>
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE -->
<div id="testLogger"></div>
<script type="text/javascript">
YAHOO.namespace("example.yuitest");
YAHOO.example.yuitest.ArrayTestCase = new YAHOO.tool.TestCase({
//the name of the test case - if not provided, one is automatically generated
name: "Array Tests",
//-------------------------------------------------------------------------
// Setup and teardown
//-------------------------------------------------------------------------
/*
* The setUp() method is used to setup data that necessary for a test to
* run. This method is called immediately before each test method is run,
* so it is run as many times as there are test methods.
*/
setUp : function () {
this.data = new Array (0,1,2,3,4,5);
},
/*
* The tearDown() method is used to clean up the initialization that was done
* in the setUp() method. Ideally, it should free up all memory allocated in
* setUp(), anticipating any possible changes to the data. This method is called
* immediately after each test method is run.
*/
tearDown : function () {
delete this.data;
},
//-------------------------------------------------------------------------
// Basic tests - all method names must begin with "test"
//-------------------------------------------------------------------------
/*
* Test the push() method.
*/
testPush : function() {
//shortcut variables
var ArrayAssert = YAHOO.util.ArrayAssert;
//do whatever data manipulation is necessary
this.data.push(6);
//array-specific assertions
ArrayAssert.isNotEmpty(this.data, "Array should not be empty.");
ArrayAssert.contains(6, this.data, "Array should contain 6.");
ArrayAssert.indexOf(6, this.data, 6, "The value in position 6 should be 6.");
//check that all the values are there
ArrayAssert.itemsAreEqual([0,1,2,3,4,5,6], this.data, "Arrays should be equal.");
},
/*
* Test the pop() method.
*/
testPop : function() {
//shortcut variables
var Assert = YAHOO.util.Assert;
var ArrayAssert = YAHOO.util.ArrayAssert;
//do whatever data manipulation is necessary
var value = this.data.pop();
//array shouldn't be empty
ArrayAssert.isNotEmpty(this.data, "Array should not be empty.");
//basic equality assertion - expected value, actual value, optional error message
Assert.areEqual(5, this.data.length, "Array should have 5 items.");
Assert.areEqual(5, value, "Value should be 5.");
ArrayAssert.itemsAreSame([0,1,2,3,4], this.data, "Arrays should be equal.");
},
/*
* Test the reverse() method.
*/
testReverse : function() {
//shortcut variables
var ArrayAssert = YAHOO.util.ArrayAssert;
//do whatever data manipulation is necessary
this.data = this.data.reverse();
ArrayAssert.itemsAreEqual([5,4,3,2,1,0], this.data, "Arrays should be equal.");
},
/*
* Test the shift() method.
*/
testShift : function() {
//shortcut variables
var Assert = YAHOO.util.Assert;
var ArrayAssert = YAHOO.util.ArrayAssert;
//do whatever data manipulation is necessary
var value = this.data.shift();
//array shouldn't be empty
ArrayAssert.isNotEmpty(this.data, "Array should not be empty.");
//basic equality assertion - expected value, actual value, optional error message
Assert.areEqual(5, this.data.length, "Array should have 6 items.");
Assert.areEqual(0, value, "Value should be 0.");
ArrayAssert.itemsAreEqual([1,2,3,4,5], this.data, "Arrays should be equal.");
},
/*
* Test the splice() method.
*/
testSplice : function() {
//shortcut variables
var Assert = YAHOO.util.Assert;
var ArrayAssert = YAHOO.util.ArrayAssert;
//do whatever data manipulation is necessary
var removed = this.data.splice(1, 2, 99, 100);
//basic equality assertion - expected value, actual value, optional error message
Assert.areEqual(6, this.data.length, "Array should have 6 items.");
//the new items should be there
ArrayAssert.indexOf(99, this.data, 1, "Value at index 1 should be 99.");
ArrayAssert.indexOf(100, this.data, 2, "Value at index 2 should be 100.");
ArrayAssert.itemsAreEqual([0,99,100,3,4,5], this.data, "Arrays should be equal.");
ArrayAssert.itemsAreEqual([1,2], removed, "Removed values should be an array containing 1 and 2.");
},
/*
* Test the unshift() method.
*/
testUnshift : function() {
//shortcut variables
var Assert = YAHOO.util.Assert;
var ArrayAssert = YAHOO.util.ArrayAssert;
//do whatever data manipulation is necessary
this.data.unshift(-1);
//basic equality assertion - expected value, actual value, optional error message
Assert.areEqual(7, this.data.length, "Array should have 7 items.");
//the new item should be there
ArrayAssert.indexOf(-1, this.data, 0, "First item should be -1.");
ArrayAssert.itemsAreEqual([-1,0,1,2,3,4,5], this.data, "Arrays should be equal.");
}
});
YAHOO.util.Event.onDOMReady(function (){
//create the logger
var logger = new YAHOO.tool.TestLogger("testLogger");
YAHOO.tool.TestRunner.add(YAHOO.example.yuitest.ArrayTestCase);
//run the tests
YAHOO.tool.TestRunner.run();
});
</script>
<!--END SOURCE CODE FOR EXAMPLE -->
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</html>
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