Advanced ActionScript 3 with Design Patterns by Joey Lott

By Joey Lott

Modern day ActionScript-based functions require more and more subtle architectures and code. This publication aids intermediate and complicated ActionScript builders in studying easy methods to plan and construct purposes extra successfully. you are going to easy methods to follow layout styles as options to universal programming eventualities. past a reference, complicated ActionScript with layout styles is a pragmatic consultant entire with pattern mini-applications illustrating every one layout trend. The accompanying CD encompasses a trial model of Flash eight besides all of the lesson records had to paintings with the textual content.

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For example, a class may need to make a request and wait for a response from a service method before a test can be verified properly. In such cases it's important to be able to run tests asynchronously. For an example consider the following class which loads data from a text file when calling the getdata() method. COMPLETE)); } } 34 Part I: Successful Projects Part I: Successful Projects 35 } With a few simple changes it's possible to run FlexUnit tests asynchronously so you can test operations like getdata().

If you make the following change to SimpleConverter you'll see that one of the tests fails. PI; } public function convertToDegrees(radians:Number):Number { return 0; } } } Note that since convertToDegrees() always returns 0 the testConvertPIToDegrees test will fail. Since the specific test fails you immediately know where the error is occurring, and you can fix the bug. Part I: Successful Projects 33 34 Part I: Successful Projects Another thing that can be useful when creating test cases is to add a static method to each TestCase subclass that returns a TestSuite of all the tests for that class.

However, rather than registering the listener directly, you should use an inherited TestCase method called addAsync(). The addAsync() method allows you to specify a listener method along with a time out in milliseconds. This allows you to specify what method should handle the event, but if the event doesn't occur within the timeout window then the test will fail. The event listener method should run the assertion. The following example uses these techniques. You'll see that the class extends TestCase just like a basic unit test.

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