def test_shutdown_execute_conditional():
    """Test the conditional execution (or visit) of the Shutdown class."""
    true_action = Shutdown(condition=IfCondition('True'))
    false_action = Shutdown(condition=IfCondition('False'))
    context = LaunchContext()

    assert context._event_queue.qsize() == 0
    assert false_action.visit(context) is None
    assert context._event_queue.qsize() == 0
    assert true_action.visit(context) is None
    assert context._event_queue.qsize() == 1
    event = context._event_queue.get_nowait()
    assert isinstance(event, ShutdownEvent)
def test_shutdown_reason():
    """Test the execute (or visit) of a Shutdown class that has a reason."""
    action = Shutdown(reason='test reason')
    context = LaunchContext()
    assert action.visit(context) is None
    assert context._event_queue.qsize() == 1
    event = context._event_queue.get_nowait()
    assert isinstance(event, ShutdownEvent)
    assert event.reason == 'test reason'
def test_shutdown_execute():
    """Test the execute (or visit) of the Shutdown class."""
    action = Shutdown()
    context = LaunchContext()
    assert context._event_queue.qsize() == 0
    assert action.visit(context) is None
    assert context._event_queue.qsize() == 1
    event = context._event_queue.get_nowait()
    assert isinstance(event, ShutdownEvent)