@Test( expected = IOException.class )
public void testSendMessageToTheDm_messagingError() throws Exception {

	Mockito.verifyZeroInteractions( this.msgClient );
	Mockito.doThrow( new IOException( "for test" )).when( this.msgClient ).sendMessageToTheDm( Mockito.any( MsgCmdRemoveInstance.class ));
	this.mngr.sendMessageToTheDm( new MsgCmdRemoveInstance( "/" ));
}