'check physical links when user do not connect DS8K.'

@mock.patch.object(helper.DS8KCommonHelper, 'get_physical_links')
def test_check_physical_links(self, mock_get_physical_links):

    src_helper = FakeDS8KCommonHelper(self.configuration, None)
    repl = FakeReplication(src_helper, TEST_REPLICATION_DEVICE)
    mock_get_physical_links.return_value = None
    self.assertRaises(exception.CinderException, repl.check_physical_links)
