Part II: Using custom runners with Flash Builder 4's built-in FlexUnit4 support

Via asmock’s installation wiki, I stumbled upon a second way to link a custom FlexUnit4 runner into a Flash Builder 4 project: using a compiler argument.

Add the following to the “Additional compiler arguments” under “Flex Compiler” in your project properties:
-includes asmock.integration.flexunit.ASMockClassRunner

This way is probaby more straightforward than using a custom FlexUnitApplication, at least as long as you’re doing something simple.