Save the date! Android Dev Summit is coming to Sunnyvale, CA on Oct 23-24, 2019.
added in version 1.1.0

android.arch.core.executor.testing

Classes

CountingTaskExecutorRule A JUnit Test Rule that swaps the background executor used by the Architecture Components with a different one which counts the tasks as they are start and finish. 
InstantTaskExecutorRule A JUnit Test Rule that swaps the background executor used by the Architecture Components with a different one which executes each task synchronously.