def test_node_exists_nonexistant(self): """ A node knows whether it exists or not. """ node = ZNode("/zoo/rabbit", self.client) exists = yield node.exists() self.assertFalse(exists)
def test_node_set_data_update_with_cached_exists(self): """ Data can be set on an existing node, updating it in place. """ node = ZNode("/zoo/monkey", self.client) yield self.client.create("/zoo/monkey", "stripes") exists = yield node.exists() self.assertTrue(exists) yield node.set_data("banana") data, stat = yield self.client.get("/zoo/monkey") self.assertEqual(data, "banana")
def test_node_set_data_update_with_invalid_cached_exists(self): """ If a node is deleted, attempting to set data on it raises a no node exception. """ node = ZNode("/zoo/monkey", self.client) yield self.client.create("/zoo/monkey", "stripes") exists = yield node.exists() self.assertTrue(exists) yield self.client.delete("/zoo/monkey") d = node.set_data("banana") self.failUnlessFailure(d, zookeeper.NoNodeException) yield d