JUnit 5 executor version of InstantTaskExecutorRule

InstantTaskExecutor.kt

import androidx.arch.core.executor.ArchTaskExecutor
import androidx.arch.core.executor.TaskExecutor
import org.junit.jupiter.api.extension.ExtensionContext
import org.junit.jupiter.api.extension.TestInstancePostProcessor

class InstantTaskExecutor : TestInstancePostProcessor {
    override fun postProcessTestInstance(testInstance: Any?, context: ExtensionContext?) {
        ArchTaskExecutor.getInstance().setDelegate(object : TaskExecutor() {
            override fun executeOnDiskIO(runnable: Runnable) {
                runnable.run()
            }

            override fun postToMainThread(runnable: Runnable) {
                runnable.run()
            }

            override fun isMainThread(): Boolean {
                return true
            }
        })
    }
}