@Test
public void testSendPingMessageQueue_normal() throws Exception {

	Mockito.verifyZeroInteractions( this.messagingMngr );
	Assert.assertTrue( this.mngr.pingMessageQueue( "TEST" ));
	ArgumentCaptor<Message> argument = ArgumentCaptor.forClass( Message.class );
	Mockito.verify( this.messagingMngr, Mockito.times( 1 )).sendMessageToTheDm( argument.capture());
	Message message = argument.getValue();
	Assert.assertTrue( message instanceof MsgEcho );
	MsgEcho echo = (MsgEcho) message;
	Assert.assertEquals( "TEST", echo.getContent());
}