Need to rebuild before tests

[StefanoDeVuono]

When I add imports or change associated files, my tests will often fail until I run mvn test-compile in a terminal.

Is there a way to make this a prelaunch task to running my tests?

[jdneo]

As a workaround, you can turn on java.autobuild.enabled.

This will make sure your project will be incrementally built after each save event.

I'll send out a PR later to provide a setting whether to force build the workspace before each test execution.