def test_on_down_and_up(self):
cluster = Cluster()
session = cluster.connect()
host = cluster.metadata.all_hosts()[0]
host.monitor.signal_connection_failure(None)
cluster.on_down(host)
self.assertNotIn(host, session._pools)
host_reconnector = host._reconnection_handler
self.assertNotEqual(None, host_reconnector)
host.monitor.is_up = True
cluster.on_up(host)
self.assertEqual(None, host._reconnection_handler)
self.assertTrue(host_reconnector._cancelled)
self.assertIn(host, session._pools)
