When I implement new features using TDD, I often use the shortcut Shift + Alt + D T to run only the jUnit test case I am currently working on (and not the whole tes
Windows → Preferences → JUnit has an option to add -ea every time a new launch configuration is created. It adds the -ea option to the Debug Configuration as well.
The full text next to a check box is:
Add -ea to VM arguments when creating a new JUnit launch configuration