Over the last couple of days I've had some time to look into a few features of Flash Builder, one of the exciting ones being the inclusion of unit testing. After having a quick look at online examples I was running into a few issues finding a complete example using Flex Unit 4 within Flash Builder, so here is a quick overview to get you up and running based on a mixture of examples I have been playing with.

We start by building a new flex project, >File >New >Flex Project. For this example I will just name it UnitTestDemo, keep the other settings as default (i.e. Application type: web, SDK:Flex 4), hit Finish. Now lets create a class we will perform our tests on. Here is my example class, named TestObject.

package
{
public class TestObject
{
public function TestObject()
{
}
public function returnNumberOne():int
{
return 1;
}
public function returnString(value:String):String
{
return value;
}
public function returnTrue():Boolean
{
return true;
}
}
}

This is just a simple class with a few example functions which we will run our tests on, ok... now for our test class. >File >New >Test Case Class. Create a name for your class, in this case I have named it as TestClass, Flash Builder will create folder to place these into named flexUnitTests.

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