Unit test configuration broke in Android Studio 3.1

Question

I updated to Android Studio 3.1 and as suggested by Android Studio also:

• Updated the Android gradle plugin to 3.1.0 from 2.3.0 (also tried the new 3.1.1, the probl

Answer 1

As this bug commenter pointed out: https://issuetracker.google.com/issues/77605097#comment7

disabling the "configure on demand" feature of Gradle (in Settings: Build, Execution, and Deployment: Compiler) is a viable workaround.

Since I did this my Unit tests are all working again.