@Test
public void thatCanCreateADefaultThreadManagerWithPoolQueuePolicy() {

    DefaultThreadManager defaultThreadManager = new DefaultThreadManager();
    Future future = defaultThreadManager.enqueue(Threading.POOL_QUEUE_POLICY, givenARunnable(mCallbackFlag));
    assertThat(mCallbackFlag.isFlagged()).isFalse();
    assertThat(future).isNotNull();
}