I\'m trying to execute a simple test case for Android following just announced unit testing support - http://tools.android.com/tech-docs/unit-testing-support
After caref
That Testing Support feature is experimental. That said maybe there is no quick solution to your issue or might be a bug.
However, I would dig deeper into this, reading the message:
This line Execution failed for task ':app:compileDebugGroovy'.
mentions the task, so I would go and figure what that task does. I suppose it's a delivered task. The error being that in that task there is a property missing > No such property: bootClasspath for class: com.android.build.gradle.AppPlugin
So maybe try to find that task and make sure the bootClasspath property is set for the AppPlugin class.