Expected Behavior

DefaultTestExecuter hard-codes the use of ForkingTestClassProcessor. Suggested feature is an extension point that provides a way to use alternative TestClassProcessor.

Current Behavior (optional)

DefaultTestExecuter hard-codes the use of ForkingTestClassProcessor.

Context

When running tests on Scala.js, forking is not an option, so Gradle Scala.js plugin needs to use a TestClassProcessor that does not fork.

Without an extension point, the only way to make this work is to fork DefaultTestExecuter class and track changes to its Gradle original in a different repository just to be able to override one method - which is sub-optimal ;)

Proposed extension point would make it possible for the Gradle Scala.js plugin to be cleaner.