### Question:
MouseRequestLifecycle implements CommandRequestLifecycle { @Override public void complete() { getTarget().complete(); }  void listen(Supplier<CommandRequestLifecycle> target); @Override void start(); @Override void rollback(); @Override void complete(); @PreDestroy void destroy();  }### Answer:
@Test public void testComplete() { tested.complete(); verify(lifecycle, times(1)).complete(); verify(lifecycle, never()).rollback(); verify(lifecycle, never()).start(); }