doReturn("").when(sessionNegotiator).toString();
doReturn(sessionNegotiator).when(negotiatorFactory).getSessionNegotiator(any(SessionListenerFactory.class), any(Channel.class), any(Promise.class));
ChannelPipeline pipeline = mock(ChannelPipeline.class);
doReturn("").when(sessionNegotiator).toString();
doReturn(sessionNegotiator).when(negotiatorFactory).getSessionNegotiator(any(SessionListenerFactory.class), any(Channel.class), any(Promise.class));
ChannelPipeline pipeline = mock(ChannelPipeline.class);