class DxlClientTest(unittest.TestCase):
def setUp(self):
self.config = DxlClientConfig(broker_ca_bundle=get_ca_bundle_pem(),
cert_file=get_cert_file_pem(),
private_key=get_dxl_private_key(),
brokers=[])
mqtt_client_patch = patch('paho.mqtt.client.Client')
mqtt_client_patch.start()
self.client = DxlClient(self.config)
self.client._request_manager.wait_for_response = Mock(return_value=Response(request=None))
self.test_channel = '/test/channel'
def tearDown(self):
patch.stopall()
def test_client_raises_exception_on_connect_when_already_connecting(self):
self.client._client.connect.side_effect = Exception("An exception!")
class MyThread(threading.Thread):
def __init__(self, client):
super(MyThread, self).__init__()
self._client = client
def run(self):
self._client.connect()
t = MyThread(self.client)
t.setDaemon(True)
t.start()
time.sleep(2)
self.assertEqual(self.client.connected, False)
with self.assertRaises(DxlException):
self.client.connect()
# self.client.disconnect()
def test_client_raises_exception_on_connect_when_already_connected(self):
self.client._client.connect.side_effect = Exception("An exception!")
self.client._connected = Mock(return_value=True)
with self.assertRaises(DxlException):
self.client.connect()
# self.client.disconnect()
# The following test is too slow
def test_client_disconnect_doesnt_raises_exception_on_disconnect_when_disconnected(self):
self.assertEqual(self.client.connected, False)
self.client.disconnect()
self.client.disconnect()
@parameterized.expand([
# (connect + retries) * 2 = connect_count
(0, 2),
(1, 4),
(2, 6),
])
def test_client_retries_defines_how_many_times_the_client_retries_connection(self, retries, connect_count):
# Client wont' connect ;)
self.client._client.connect = Mock(side_effect=Exception('Could not connect'))
# No delay between retries (faster unit tests)
self.client.config.reconnect_delay = 0
self.client._wait_for_policy_delay = 0
broker = Broker(host_name='localhost')
broker._parse(UuidGenerator.generate_id_as_string() + ";9999;localhost;127.0.0.1")
self.client.config.brokers = [broker]
self.client.config.connect_retries = retries
with self.assertRaises(DxlException):
self.client.connect()
self.assertEqual(self.client._client.connect.call_count, connect_count)
# self.client.disconnect()
def test_client_subscribe_adds_subscription_when_not_connected(self):
self.client._client.subscribe = Mock(return_value=None)
self.assertFalse(self.client.connected)
self.client.subscribe(self.test_channel)
self.assertTrue(self.test_channel in self.client.subscriptions)
self.assertEqual(self.client._client.subscribe.call_count, 0)
def test_client_unsubscribe_removes_subscription_when_not_connected(self):
self.client._client.unsubscribe = Mock(return_value=None)
self.assertFalse(self.client.connected)
# Add subscription
self.client.subscribe(self.test_channel)
self.assertTrue(self.test_channel in self.client.subscriptions)
# Remove subscription
self.client.unsubscribe(self.test_channel)
self.assertFalse(self.test_channel in self.client.subscriptions)
def test_client_subscribe_doesnt_add_twice_same_channel(self):
# Mock client.subscribe and is_connected
self.client._client.subscribe = Mock(return_value=None)
self.client._connected = Mock(return_value=True)
# We always have the default (myself) channel
self.assertEqual(len(self.client.subscriptions), 1)
self.client.subscribe(self.test_channel)
self.assertEqual(len(self.client.subscriptions), 2)
self.client.subscribe(self.test_channel)
self.assertEqual(len(self.client.subscriptions), 2)
self.assertEqual(self.client._client.subscribe.call_count, 1)
def test_client_handle_message_with_event_calls_event_callback(self):
event_callback = EventCallback()
event_callback.on_event = Mock()
self.client.add_event_callback(self.test_channel, event_callback)
# Create and process Event
evt = Event(destination_topic=self.test_channel)._to_bytes()
self.client._handle_message(self.test_channel, evt)
# Check that callback was called
self.assertEqual(event_callback.on_event.call_count, 1)
def test_client_handle_message_with_request_calls_request_callback(self):
req_callback = RequestCallback()
req_callback.on_request = Mock()
self.client.add_request_callback(self.test_channel, req_callback)
# Create and process Request
req = Request(destination_topic=self.test_channel)._to_bytes()
self.client._handle_message(self.test_channel, req)
# Check that callback was called
self.assertEqual(req_callback.on_request.call_count, 1)
def test_client_handle_message_with_response_calls_response_callback(self):
callback = ResponseCallback()
callback.on_response = Mock()
self.client.add_response_callback(self.test_channel, callback)
# Create and process Response
msg = Response(request=None)._to_bytes()
self.client._handle_message(self.test_channel, msg)
# Check that callback was called
self.assertEqual(callback.on_response.call_count, 1)
def test_client_send_event_publishes_message_to_dxl_fabric(self):
self.client._client.publish = Mock(return_value=None)
# Create and process Request
msg = Event(destination_topic="")
self.client.send_event(msg)
# Check that callback was called
self.assertEqual(self.client._client.publish.call_count, 1)
def test_client_send_request_publishes_message_to_dxl_fabric(self):
self.client._client.publish = Mock(return_value=None)
# Create and process Request
msg = Request(destination_topic="")
self.client._send_request(msg)
# Check that callback was called
self.assertEqual(self.client._client.publish.call_count, 1)
def test_client_send_response_publishes_message_to_dxl_fabric(self):
self.client._client.publish = Mock(return_value=None)
# Create and process Request
msg = Response(request=None)
self.client.send_response(msg)
# Check that callback was called
self.assertEqual(self.client._client.publish.call_count, 1)
def test_client_handles_error_response_and_fire_response_handler(self):
self.client._fire_response = Mock(return_value=None)
# Create and process Request
msg = ErrorResponse(request=None, error_code=666, error_message="test message")
payload = msg._to_bytes()
# Handle error response message
self.client._handle_message(self.test_channel, payload)
# Check that message response was properly delivered to handler
self.assertEqual(self.client._fire_response.call_count, 1)
"""
Service unit tests
"""
def test_client_register_service_subscribes_client_to_channel(self):
channel1 = '/mcafee/service/unittest/one'
channel2 = '/mcafee/service/unittest/two'
# Create dummy service
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
service_info.add_topic(channel1, RequestCallback())
service_info.add_topic(channel2, RequestCallback())
# Register service in client
self.client.register_service_async(service_info)
# Check subscribed channels
subscriptions = self.client.subscriptions
assert channel1 in subscriptions, "Client wasn't subscribed to service channel"
assert channel2 in subscriptions, "Client wasn't subscribed to service channel"
def test_client_wont_register_the_same_service_twice(self):
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
# Register service in client
self.client.register_service_async(service_info)
with self.assertRaises(dxlclient.DxlException):
# Re-register service
self.client.register_service_async(service_info)
def test_client_register_service_sends_register_request_to_broker(self):
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
self.client._send_request = Mock(return_value=True)
self.client._connected = Mock(return_value=True)
# Register service in client
self.client.register_service_async(service_info)
time.sleep(2)
# Check that method has been called
self.assertTrue(self.client._send_request.called)
def test_client_register_service_unsubscribes_client_to_channel(self):
channel1 = '/mcafee/service/unittest/one'
channel2 = '/mcafee/service/unittest/two'
# Create dummy service
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
service_info.add_topic(channel1, RequestCallback())
service_info.add_topic(channel2, RequestCallback())
# Register service in client
self.client.register_service_async(service_info)
# Check subscribed channels
subscriptions = self.client.subscriptions
assert channel1 in subscriptions, "Client wasn't subscribed to service channel"
assert channel2 in subscriptions, "Client wasn't subscribed to service channel"
self.client.unregister_service_async(service_info)
subscriptions = self.client.subscriptions
assert channel1 not in subscriptions, "Client wasn't unsubscribed to service channel"
assert channel2 not in subscriptions, "Client wasn't unsubscribed to service channel"
def test_client_register_service_unsuscribes_from_channel_by_guid(self):
channel1 = '/mcafee/service/unittest/one'
channel2 = '/mcafee/service/unittest/two'
# Create dummy service
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
service_info.add_topic(channel1, RequestCallback())
service_info.add_topic(channel2, RequestCallback())
# Create same dummy service - different object
service_info2 = service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
service_info._service_id = service_info.service_id
service_info.add_topic(channel1, RequestCallback())
service_info.add_topic(channel2, RequestCallback())
# Register service in client
self.client.register_service_async(service_info)
# Check subscribed channels
subscriptions = self.client.subscriptions
assert channel1 in subscriptions, "Client wasn't subscribed to service channel"
assert channel2 in subscriptions, "Client wasn't subscribed to service channel"
self.client.unregister_service_async(service_info2)
subscriptions = self.client.subscriptions
assert channel1 not in subscriptions, "Client wasn't unsubscribed to service channel"
assert channel2 not in subscriptions, "Client wasn't unsubscribed to service channel"
class DxlClientTest(unittest.TestCase):
def setUp(self):
self.config = DxlClientConfig(broker_ca_bundle=get_ca_bundle_pem(),
cert_file=get_cert_file_pem(),
private_key=get_dxl_private_key(),
brokers=[])
mqtt_client_patch = patch('paho.mqtt.client.Client')
mqtt_client_patch.start()
self.client = DxlClient(self.config)
self.client._request_manager.wait_for_response = Mock(
return_value=Response(request=None))
self.test_channel = '/test/channel'
def tearDown(self):
self.client._connected = False
self.client.destroy()
patch.stopall()
def test_client_raises_exception_on_connect_when_already_connecting(self):
self.client._client.connect.side_effect = Exception("An exception!")
self.client._thread = threading.Thread()
self.assertEqual(self.client.connected, False)
with self.assertRaises(DxlException):
self.client.connect()
self.client._thread = None
def test_client_raises_exception_on_connect_when_already_connected(self):
self.client._client.connect.side_effect = Exception("An exception!")
self.client._connected = True
with self.assertRaises(DxlException):
self.client.connect()
# The following test is too slow
def test_client_disconnect_doesnt_raises_exception_on_disconnect_when_disconnected(
self):
self.assertEqual(self.client.connected, False)
self.client.disconnect()
self.client.disconnect()
@parameterized.expand([
# (connect + retries) * 2 = connect_count
(0, 2),
(1, 4),
(2, 6),
])
def test_client_retries_defines_how_many_times_the_client_retries_connection(
self, retries, connect_count):
# Client wont' connect ;)
self.client._client.connect = Mock(
side_effect=Exception('Could not connect'))
# No delay between retries (faster unit tests)
self.client.config.reconnect_delay = 0
self.client._wait_for_policy_delay = 0
broker = Broker(host_name='localhost')
broker._parse(UuidGenerator.generate_id_as_string() +
";9999;localhost;127.0.0.1")
self.client.config.brokers = [broker]
self.client.config.connect_retries = retries
with self.assertRaises(DxlException):
self.client.connect()
self.assertEqual(self.client._client.connect.call_count, connect_count)
def test_client_subscribe_adds_subscription_when_not_connected(self):
self.client._client.subscribe = Mock(return_value=None)
self.assertFalse(self.client.connected)
self.client.subscribe(self.test_channel)
self.assertTrue(self.test_channel in self.client.subscriptions)
self.assertEqual(self.client._client.subscribe.call_count, 0)
def test_client_unsubscribe_removes_subscription_when_not_connected(self):
self.client._client.unsubscribe = Mock(return_value=None)
self.assertFalse(self.client.connected)
# Add subscription
self.client.subscribe(self.test_channel)
self.assertTrue(self.test_channel in self.client.subscriptions)
# Remove subscription
self.client.unsubscribe(self.test_channel)
self.assertFalse(self.test_channel in self.client.subscriptions)
def test_client_subscribe_doesnt_add_twice_same_channel(self):
# Mock client.subscribe and is_connected
self.client._client.subscribe = Mock(
return_value=(mqtt.MQTT_ERR_SUCCESS, 2))
self.client._connected = Mock(return_value=True)
self.client._wait_packet_acked = Mock(return_value=None)
# We always have the default (myself) channel
self.assertEqual(len(self.client.subscriptions), 1)
self.client.subscribe(self.test_channel)
self.assertEqual(len(self.client.subscriptions), 2)
self.client.subscribe(self.test_channel)
self.assertEqual(len(self.client.subscriptions), 2)
self.assertEqual(self.client._client.subscribe.call_count, 1)
def test_client_handle_message_with_event_calls_event_callback(self):
event_callback = EventCallback()
event_callback.on_event = Mock()
self.client.add_event_callback(self.test_channel, event_callback)
# Create and process Event
evt = Event(destination_topic=self.test_channel)._to_bytes()
self.client._handle_message(self.test_channel, evt)
# Check that callback was called
self.assertEqual(event_callback.on_event.call_count, 1)
self.client.remove_event_callback(self.test_channel, event_callback)
self.client._handle_message(self.test_channel, evt)
# Check that callback was not called again - because the event
# callback was unregistered
self.assertEqual(event_callback.on_event.call_count, 1)
def test_client_handle_message_with_request_calls_request_callback(self):
req_callback = RequestCallback()
req_callback.on_request = Mock()
self.client.add_request_callback(self.test_channel, req_callback)
# Create and process Request
req = Request(destination_topic=self.test_channel)._to_bytes()
self.client._handle_message(self.test_channel, req)
# Check that callback was called
self.assertEqual(req_callback.on_request.call_count, 1)
self.client.remove_request_callback(self.test_channel, req_callback)
self.client._handle_message(self.test_channel, req)
# Check that callback was not called again - because the request
# callback was unregistered
self.assertEqual(req_callback.on_request.call_count, 1)
def test_client_handle_message_with_response_calls_response_callback(self):
callback = ResponseCallback()
callback.on_response = Mock()
self.client.add_response_callback(self.test_channel, callback)
# Create and process Response
msg = Response(request=None)._to_bytes()
self.client._handle_message(self.test_channel, msg)
# Check that callback was called
self.assertEqual(callback.on_response.call_count, 1)
self.client.remove_response_callback(self.test_channel, callback)
self.client._handle_message(self.test_channel, msg)
# Check that callback was not called again - because the response
# callback was unregistered
self.assertEqual(callback.on_response.call_count, 1)
def test_client_remove_call_for_unregistered_callback_does_not_error(self):
callback = EventCallback()
callback.on_event = Mock()
callback2 = EventCallback()
callback2.on_event = Mock()
self.client.add_event_callback(self.test_channel, callback)
self.client.add_event_callback(self.test_channel, callback2)
self.client.remove_event_callback(self.test_channel, callback)
self.client.remove_event_callback(self.test_channel, callback)
def test_client_send_event_publishes_message_to_dxl_fabric(self):
self.client._client.publish = Mock(return_value=None)
# Create and process Request
msg = Event(destination_topic="")
self.client.send_event(msg)
# Check that callback was called
self.assertEqual(self.client._client.publish.call_count, 1)
def test_client_send_request_publishes_message_to_dxl_fabric(self):
self.client._client.publish = Mock(return_value=None)
# Create and process Request
msg = Request(destination_topic="")
self.client._send_request(msg)
# Check that callback was called
self.assertEqual(self.client._client.publish.call_count, 1)
def test_client_send_response_publishes_message_to_dxl_fabric(self):
self.client._client.publish = Mock(return_value=None)
# Create and process Request
msg = Response(request=None)
self.client.send_response(msg)
# Check that callback was called
self.assertEqual(self.client._client.publish.call_count, 1)
def test_client_handles_error_response_and_fire_response_handler(self):
self.client._fire_response = Mock(return_value=None)
# Create and process Request
msg = ErrorResponse(request=None,
error_code=666,
error_message="test message")
payload = msg._to_bytes()
# Handle error response message
self.client._handle_message(self.test_channel, payload)
# Check that message response was properly delivered to handler
self.assertEqual(self.client._fire_response.call_count, 1)
def test_client_subscribe_no_ack_raises_timeout(self):
self.client._client.subscribe = Mock(
return_value=(mqtt.MQTT_ERR_SUCCESS, 2))
self.client._connected = Mock(return_value=True)
with patch.object(DxlClient, '_MAX_PACKET_ACK_WAIT', 0.01):
with self.assertRaises(WaitTimeoutException):
self.client.subscribe(self.test_channel)
def test_client_unsubscribe_no_ack_raises_timeout(self):
self.client._client.subscribe = Mock(
return_value=(mqtt.MQTT_ERR_SUCCESS, 2))
self.client._client.unsubscribe = Mock(
return_value=(mqtt.MQTT_ERR_SUCCESS, 3))
self.client._connected = Mock(return_value=True)
original_wait_packet_acked_func = self.client._wait_packet_acked
self.client._wait_packet_acked = Mock(return_value=None)
self.client.subscribe(self.test_channel)
self.client._wait_packet_acked = original_wait_packet_acked_func
with patch.object(DxlClient, '_MAX_PACKET_ACK_WAIT', 0.01):
with self.assertRaises(WaitTimeoutException):
self.client.unsubscribe(self.test_channel)
# Service unit tests
def test_client_register_service_subscribes_client_to_channel(self):
channel = '/mcafee/service/unittest'
# Create dummy service
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
# Add topics to the service
service_info.add_topic(channel + "1", RequestCallback())
service_info.add_topic(channel + "2", RequestCallback())
service_info.add_topics(
{channel + str(i): RequestCallback()
for i in range(3, 6)})
subscriptions_before_registration = self.client.subscriptions
expected_subscriptions_after_registration = \
sorted(subscriptions_before_registration +
tuple(channel + str(i) for i in range(1, 6)))
# Register service in client
self.client.register_service_async(service_info)
# Check subscribed channels
subscriptions_after_registration = self.client.subscriptions
self.assertEqual(expected_subscriptions_after_registration,
sorted(subscriptions_after_registration))
def test_client_wont_register_the_same_service_twice(self):
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
# Register service in client
self.client.register_service_async(service_info)
with self.assertRaises(dxlclient.DxlException):
# Re-register service
self.client.register_service_async(service_info)
def test_client_register_service_sends_register_request_to_broker(self):
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
self.client._send_request = Mock(return_value=True)
self.client._connected = Mock(return_value=True)
# Register service in client
self.client.register_service_async(service_info)
time.sleep(2)
# Check that method has been called
self.assertTrue(self.client._send_request.called)
def test_client_register_service_unsubscribes_client_to_channel(self):
channel1 = '/mcafee/service/unittest/one'
channel2 = '/mcafee/service/unittest/two'
# Create dummy service
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
service_info.add_topic(channel1, RequestCallback())
service_info.add_topic(channel2, RequestCallback())
# Register service in client
self.client.register_service_async(service_info)
# Check subscribed channels
subscriptions = self.client.subscriptions
self.assertIn(channel1, subscriptions,
"Client wasn't subscribed to service channel")
self.assertIn(channel2, subscriptions,
"Client wasn't subscribed to service channel")
self.client.unregister_service_async(service_info)
subscriptions = self.client.subscriptions
self.assertNotIn(channel1, subscriptions,
"Client wasn't unsubscribed to service channel")
self.assertNotIn(channel2, subscriptions,
"Client wasn't unsubscribed to service channel")
def test_client_register_service_unsuscribes_from_channel_by_guid(self):
channel1 = '/mcafee/service/unittest/one'
channel2 = '/mcafee/service/unittest/two'
# Create dummy service
service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
service_info.add_topic(channel1, RequestCallback())
service_info.add_topic(channel2, RequestCallback())
# Create same dummy service - different object
service_info2 = service_info = dxlclient.service.ServiceRegistrationInfo(
service_type='/mcafee/service/unittest', client=self.client)
service_info._service_id = service_info.service_id
service_info.add_topic(channel1, RequestCallback())
service_info.add_topic(channel2, RequestCallback())
# Register service in client
self.client.register_service_async(service_info)
# Check subscribed channels
subscriptions = self.client.subscriptions
self.assertIn(channel1, subscriptions,
"Client wasn't subscribed to service channel")
self.assertIn(channel2, subscriptions,
"Client wasn't subscribed to service channel")
self.client.unregister_service_async(service_info2)
subscriptions = self.client.subscriptions
self.assertNotIn(channel1, subscriptions,
"Client wasn't unsubscribed to service channel")
self.assertNotIn(channel2, subscriptions,
"Client wasn't unsubscribed to service channel")