javascript parse pdf417 BUILDING APPLICATIONS USING TEST-DRIVEN DEVELOPMENT in Java

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BUILDING APPLICATIONS USING TEST-DRIVEN DEVELOPMENT
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1 total test was run. 1 were successful. 0 was a failure. 0 were errors. 0 were ignored.
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Figure 1-20. FlexUnit Test Run results in browser Once you close the browser, you can see the results in the FlexUnit Results view (see Figure 1-21). From that view you can see that the test passed and you get a green light.
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Figure 1-21. FlexUnit Results view
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Once you write all the code and the test passes, you know that your test meets all the business requirements, so you can share the work with the customer or other members of the team.
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Now that your test passed, you can refactor the code in order to get it ready for production. For example, you may add a design pattern to replace a block of if..else statements. In this case, there is nothing to refactor since the code is so simple.
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Rinse and Repeat If Desired
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You can continue to create the unit tests for the Service call and retrieve an XML with employee s data information, then process the information, add all the information to a list, and dispatch an event when completed.
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Write Failed Test to Retrieve Employees Information
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You can continue and write a test for the service call to retrieve the employee s information. Again, you first start by creating the test. In this case, you can create a custom event that will pass the employee s information. Take a look at the test method:
[Test] public function testLoad():void { classToTestRef.addEventListener( RetrieveInformationEvent.RETRIVE_INFORMATION, addAsync( onResult, 500 ) ); classToTestRef.load("assets/file.xml"); } [Test] public function onResult(event:RetrieveInformationEvent):void { assertNotNull( event.employeesCollection ); }
testLoad method adds an event listener so you can wait for the async call to complete and handle the results in the onResult method. Notice that you are using the addAsync function which indicates that you will wait 500 ms for the call to complete. The onResult method checks to ensure you got results. You really don t care what type of results you get in this test. You are just checking that the load method received the results and added the results to the collection. You can also create another test to check the integrity of the data.
Write Code to Retrieve Employee s Information
Here is the complete GetEmployeesInfoTester.as class.
package flexUnitTests { import org.flexunit.asserts.assertEquals; import org.flexunit.asserts.assertNotNull; import org.flexunit.async.Async;
BUILDING APPLICATIONS USING TEST-DRIVEN DEVELOPMENT
import utils.GetEmployeesInfo; import utils.events.RetrieveInformationEvent; public class GetEmployeesInfoTester { // Reference declaration for class to test public var classToTestRef : GetEmployeesInfo; [Before] public function setUpBeforeClass():void { classToTestRef = new GetEmployeesInfo(); } [After] public function tearDownAfterClass():void { classToTestRef = null; } [Test] public function testAddItem():void { classToTestRef.addItem("John Do", "212-222-2222", "25", "john.do@gmail.com"); assertEquals( classToTestRef.employeesCollection.getItemAt(0).name, "John Do" ); } [Test(async,timeout="500")] public function testLoad():void { classToTestRef.addEventListener( RetrieveInformationEvent .RETRIEVE_INFORMATION, Async.asyncHandler( this, onResult, 500 ), false, 0, true ); classToTestRef.load("assets/file.xml"); } public function onResult(event:RetrieveInformationEvent, passThroughData:Object):void { assertNotNull( event.employeesCollection ); } } }
Compile the class and observe the compile time errors. Once again, these errors are your indication of what you need to do next. Go back to the GetEmployeesInfo.as class and add a load method to load the xml. See the complete code in the following:
package utils { import flash.events.EventDispatcher; import flash.events.IEventDispatcher; import mx.collections.ArrayCollection; import mx.rpc.events.FaultEvent; import mx.rpc.events.ResultEvent;
import mx.rpc.http.HTTPService; import utils.events.RetrieveInformationEvent; public class GetEmployeesInfo extends EventDispatcher { private var service :HTTPService; private var _employeesCollection:ArrayCollection; public function GetEmployeesInfo() { _employeesCollection = new ArrayCollection(); } public function get employeesCollection():ArrayCollection { return _employeesCollection; } public function load(file:String):void { service = new HTTPService(); service.url = file; service.resultFormat = "e4x"; service.addEventListener(ResultEvent.RESULT, onResult); service.addEventListener(FaultEvent.FAULT, onFault); service.send(); } private function onResult(event:ResultEvent):void { var employees:XML = new XML( event.result ); var employee:XML; for each (employee in employees.employee) { this.addItem( employee.name, employee.phone, employee.age, employee.email ); } this.dispatchEvent( new RetrieveInformationEvent( employeesCollection ) ); } private function onFault(event:FaultEvent):void { trace("errors loading file"); } public function addItem(name:String, phone:String, age:String, email:String):void { var item:Object = {name: name, phone: phone, age: age, email: email}; employeesCollection.addItem( item ); }
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