@Test
  public void optimisticLockingDoesNotAcquireLocks() {
    EditorTestActivity activity = new EditorTestActivity(lockManager, placeManager, OPTIMISTIC);

    activity.onStartup(place);
    activity.onOpen();

    verify(lockManager, never()).acquireLockOnDemand();
  }
  @Test
  public void pessimisticLockingAcquiresLocks() {
    EditorTestActivity activity = new EditorTestActivity(lockManager, placeManager, PESSIMISTIC);

    activity.onStartup(place);
    activity.onOpen();

    verify(lockManager, times(1)).acquireLockOnDemand();
  }