def test_shutdown(self):
kv_store = KeyValueClient('192.168.1.100:5665')
socket = MockSocket(['\x00'])
with patch('kvclient.base.create_connection', socket):
response = kv_store.shutdown()
assert socket.connection_info == ('192.168.1.100', 5665)
assert socket.sent_value == '\x04'
assert response is None
assert socket.closed