    @Test
    public void whenMessagesForChatRequested_thenRepoIsQueriedForCorrectChatId() throws Exception {

        // Setup
        when(mMockRepository.query(eq(new SessionQuery.SignOut())))
            .thenReturn(Observable.empty());

        // Execute
        mTarget.execute();

        // Assert
        verify(mMockRepository, times(1)).query(eq(new SessionQuery.SignOut()));
    }