Configuring parallelism

Parallelism within suites

By default, using the documented test suites, weaver runs all tests within a suite in parallel.

It is possible to limit the the number of tests that that can be executed in parallel as such :

import weaver._


object MySuite extends SimpleIOSuite {

  override def maxParallelism = 1

}

Parallelism across suites

Weaver does not make any decision as to whether suites are executed sequentially or in parallel. Instead, it is implemented in a way that respects the build tool settings.

SBT

• Parallel execution
• Disabling parallel execution in tests
• Tests are executed sequentially in forked JVMs

Mill

• Parallel task execution

Bloop

• bloop test --parallel