    @Test
    public void testGetOpMessage() {

        when(messageStore.getMessage(anyString(), anyString(), anyInt(), anyLong(), anyInt(),  ArgumentMatchers.nullable(MessageFilter.class))).thenReturn(createGetMessageResult(GetMessageStatus.NO_MESSAGE_IN_QUEUE));
        PullResult result = transactionBridge.getOpMessage(0, 0, 1);
        assertThat(result.getPullStatus()).isEqualTo(PullStatus.NO_NEW_MSG);
    }