ResetChoreographerRule.kt

class ResetChoreographerRule : TestRule {
    override fun apply(
        base: Statement?,
        description: Description?
    ): Statement =
        object : Statement() {
            override fun evaluate() {
                try {
                    val uiDispatcher: AndroidUiDispatcher = ReflectionHelpers.getField(AndroidUiDispatcher.Main, "element")
                    ReflectionHelpers.setField(uiDispatcher, "choreographer", Choreographer.getInstance())
                } catch (e: Exception) {
                    Timber.e(e, "Failed to reset Choreographer")
                }
                try {
                    base?.evaluate()
                } finally {
                    // Reset the Choreographer after the test
                }
            }
        }
}

Note, Robolectic handles this now. Running this appears to be counterproductive.