'Beware: this test is not testing, need to better mock the config.'

def test_get_global_overview(self):

    finish = CLUSTERS.set_for_testing({'default': {'localhost:2181': {}}})
    try:
        _get_global_overview()
    finally:
        finish()
    finish = CLUSTERS.set_for_testing({'default': {'localhost:2181,localhost:2182': {}}})
    try:
        _get_global_overview()
    finally:
        finish()
