Do Scalatests run in parallel by default under Gradle?

Question

We have tests written in Scala using Scalatest and JUnit4. The tests are annotated with @RunWith(classOf[JUnitRunner]). We're using Gradle 4.2.x and I'd like to know, if the Scala tests are executing in parallel by default.

Answer 1

I think for parallel running you will need to add something like this to your test in build.gradle

test {    
      maxParallelForks = Runtime.runtime.availableProcessors().intdiv(2) ?: 1      
    }