Enable more Ruff rules for tests; fix issues

pyproject.toml

@@ -88,7 +88,7 @@ ignore = []
 line-length = 167
 
 [tool.ruff.per-file-ignores]
-"{test,tests,examples}/**/*.py" = [
+"{examples,test}/**/*.py" = [
     "B",
     "E402",
     "E711",
@@ -100,3 +100,11 @@ line-length = 167
     "S",
     "UP",
 ]
+"tests/**/*.py" = [
+    "E402",
+    "F811",
+    "F841",
+    "S101",
+    "S105",
+    "S106",
+]

tests/test_client.py

@@ -4,9 +4,8 @@
 import time
 import unicodedata
 
-import pytest
-
 import paho.mqtt.client as client
+import pytest
 
 # From http://stackoverflow.com/questions/279237/python-import-a-module-from-a-folder
 cmd_subfolder = os.path.realpath(
@@ -20,14 +19,14 @@
 import paho_test
 
 # Import test fixture
-from testsupport.broker import fake_broker
+from testsupport.broker import fake_broker  # noqa: F401
 
 
 @pytest.mark.parametrize("proto_ver", [
     (client.MQTTv31),
     (client.MQTTv311),
 ])
-class Test_connect(object):
+class Test_connect:
     """
     Tests on connect/disconnect behaviour of the client
     """
@@ -105,14 +104,14 @@ def on_connect(mqttc, obj, flags, rc):
             mqttc.loop_stop()
 
 
-class TestPublishBroker2Client(object):
+class TestPublishBroker2Client:
 
     def test_invalid_utf8_topic(self, fake_broker):
         mqttc = client.Client("client-id")
 
         def on_message(client, userdata, msg):
             with pytest.raises(UnicodeDecodeError):
-                msg.topic
+                assert msg.topic
             client.disconnect()
 
         mqttc.on_message = on_message

tests/test_matcher.py

@@ -1,9 +1,8 @@
-import pytest
-
 import paho.mqtt.client as client
+import pytest
 
 
-class Test_client_function(object):
+class Test_client_function:
     """
     Tests on topic_matches_sub function in the client module
     """

tests/test_mqttv5.py

@@ -16,19 +16,16 @@
 *******************************************************************
 """
 
-import getopt
 import logging
 import sys
 import threading
 import time
-import traceback
 import unittest
 
 import paho.mqtt
 import paho.mqtt.client
 from paho.mqtt.packettypes import PacketTypes
 from paho.mqtt.properties import Properties
-from paho.mqtt.reasoncodes import ReasonCodes
 from paho.mqtt.subscribeoptions import SubscribeOptions
 
 
@@ -118,7 +115,7 @@ def register(self, client):
 
 def cleanRetained(port):
     callback = Callbacks()
-    curclient = paho.mqtt.client.Client("clean retained".encode("utf-8"),
+    curclient = paho.mqtt.client.Client(b"clean retained",
                                         protocol=paho.mqtt.client.MQTTv5)
     curclient.loop_start()
     callback.register(curclient)
@@ -164,8 +161,8 @@ def setUpClass(cls):
         sys.path.append("paho.mqtt.testing/interoperability/")
         try:
             import mqtt.brokers
-        except ImportError:
-            raise unittest.SkipTest("paho.mqtt.testing not present.")
+        except ImportError as ie:
+            raise unittest.SkipTest("paho.mqtt.testing not present.") from ie
 
         cls._test_broker = threading.Thread(
             target=mqtt.brokers.run,
@@ -187,12 +184,10 @@ def setUpClass(cls):
 
         #aclient = mqtt_client.Client(b"\xEF\xBB\xBF" + "myclientid".encode("utf-8"))
         #aclient = mqtt_client.Client("myclientid".encode("utf-8"))
-        aclient = paho.mqtt.client.Client("aclient".encode(
-            "utf-8"), protocol=paho.mqtt.client.MQTTv5)
+        aclient = paho.mqtt.client.Client(b"aclient", protocol=paho.mqtt.client.MQTTv5)
         callback.register(aclient)
 
-        bclient = paho.mqtt.client.Client("bclient".encode(
-            "utf-8"), protocol=paho.mqtt.client.MQTTv5)
+        bclient = paho.mqtt.client.Client(b"bclient", protocol=paho.mqtt.client.MQTTv5)
         callback2.register(bclient)
 
     @classmethod
@@ -368,7 +363,7 @@ def test_offline_message_queueing(self):
         # message queueing for offline clients
         cleanRetained(self._test_broker_port)
         ocallback = Callbacks()
-        clientid = "offline message queueing".encode("utf-8")
+        clientid = b"offline message queueing"
 
         oclient = paho.mqtt.client.Client(
             clientid, protocol=paho.mqtt.client.MQTTv5)
@@ -413,7 +408,7 @@ def test_overlapping_subscriptions(self):
         # the server may send back one message with the highest QoS of any matching subscription, or one message for
         # each subscription with a matching QoS.
         ocallback = Callbacks()
-        clientid = "overlapping subscriptions".encode("utf-8")
+        clientid = b"overlapping subscriptions"
 
         oclient = paho.mqtt.client.Client(
             clientid, protocol=paho.mqtt.client.MQTTv5)
@@ -449,7 +444,7 @@ def test_subscribe_failure(self):
         logging.info("Subscribe failure test starting")
 
         ocallback = Callbacks()
-        clientid = "subscribe failure".encode("utf-8")
+        clientid = b"subscribe failure"
         oclient = paho.mqtt.client.Client(
             clientid, protocol=paho.mqtt.client.MQTTv5)
         ocallback.register(oclient)

tests/test_websocket_integration.py

@@ -4,11 +4,10 @@
 import socketserver
 from collections import OrderedDict
 
-import pytest
-from testsupport.broker import fake_websocket_broker
-
 import paho.mqtt.client as client
+import pytest
 from paho.mqtt.client import WebsocketConnectionError
+from testsupport.broker import fake_websocket_broker  # noqa: F401
 
 
 @pytest.fixture
@@ -32,7 +31,7 @@ def get_websocket_response(response_headers):
     """
     response = "\r\n".join([
         "HTTP/1.1 101 Switching Protocols",
-        "\r\n".join("{}: {}".format(i, j) for i, j in response_headers.items()),
+        "\r\n".join(f"{i}: {j}" for i, j in response_headers.items()),
         "\r\n",
     ]).encode("utf8")
 
@@ -43,7 +42,7 @@ def get_websocket_response(response_headers):
     (client.MQTTv31, "MQIsdp"),
     (client.MQTTv311, "MQTT"),
 ])
-class TestInvalidWebsocketResponse(object):
+class TestInvalidWebsocketResponse:
     def test_unexpected_response(self, proto_ver, proto_name, fake_websocket_broker):
         """ Server responds with a valid code, but it's not what the client expected """
 
@@ -56,7 +55,7 @@ def test_unexpected_response(self, proto_ver, proto_name, fake_websocket_broker)
         class WebsocketHandler(socketserver.BaseRequestHandler):
             def handle(_self):
                 # Respond with data passed in to serve()
-                _self.request.sendall("200 OK".encode("utf8"))
+                _self.request.sendall(b"200 OK")
 
         with fake_websocket_broker.serve(WebsocketHandler):
             with pytest.raises(WebsocketConnectionError) as exc:
@@ -69,7 +68,7 @@ def handle(_self):
     (client.MQTTv31, "MQIsdp"),
     (client.MQTTv311, "MQTT"),
 ])
-class TestBadWebsocketHeaders(object):
+class TestBadWebsocketHeaders:
     """ Testing for basic functionality in checking for headers """
 
     def _get_basic_handler(self, response_headers):
@@ -130,7 +129,7 @@ def test_bad_secret_key(self, proto_ver, proto_name, fake_websocket_broker,
     (client.MQTTv31, "MQIsdp"),
     (client.MQTTv311, "MQTT"),
 ])
-class TestValidHeaders(object):
+class TestValidHeaders:
     """ Testing for functionality in request/response headers """
 
     def _get_callback_handler(self, response_headers, check_request=None):
@@ -152,8 +151,8 @@ def handle(_self):
                 GUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
                 key = re.search("sec-websocket-key: ([A-Za-z0-9+/=]*)", decoded, re.IGNORECASE).group(1)
 
-                to_hash = "{:s}{:s}".format(key, GUID)
-                hashed = hashlib.sha1(to_hash.encode("utf8"))
+                to_hash = f"{key:s}{GUID:s}"
+                hashed = hashlib.sha1(to_hash.encode("utf8"))  # noqa: S324
                 encoded = base64.b64encode(hashed.digest()).decode("utf8")
 
                 response_headers["Sec-WebSocket-Accept"] = encoded
@@ -205,7 +204,7 @@ def test_correct_path(self, proto_ver, proto_name, fake_websocket_broker,
         def check_path_correct(decoded):
             # Make sure it connects to the right path
             if mqtt_path:
-                assert re.search("GET {:s} HTTP/1.1".format(mqtt_path), decoded, re.IGNORECASE) is not None
+                assert re.search(f"GET {mqtt_path:s} HTTP/1.1", decoded, re.IGNORECASE) is not None
 
         response = self._get_callback_handler(
             init_response_headers,
@@ -241,7 +240,7 @@ def check_headers_used(decoded):
             # Make sure it connects to the right path
             if auth_headers:
                 for h in auth_headers:
-                    assert re.search("{:s}: {:s}".format(h, auth_headers[h]), decoded, re.IGNORECASE) is not None
+                    assert re.search(f"{h:s}: {auth_headers[h]:s}", decoded, re.IGNORECASE) is not None
 
         response = self._get_callback_handler(
             init_response_headers,

tests/test_websockets.py

@@ -1,14 +1,11 @@
 import socket
-import sys
-
 from unittest.mock import Mock
 
 import pytest
-
 from paho.mqtt.client import WebsocketConnectionError, WebsocketWrapper
 
 
-class TestHeaders(object):
+class TestHeaders:
     """ Make sure headers are used correctly """
 
     def test_normal_headers(self):
@@ -27,7 +24,7 @@ def iter_response():
             for i in "\r\n".join(response).encode("utf8"):
                 yield i
 
-            for i in "\r\n".encode("utf8"):
+            for i in b"\r\n":
                 yield i
 
         it = iter_response()

tests/testsupport/broker.py

@@ -68,7 +68,7 @@ class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
 
 class FakeWebsocketBroker(threading.Thread):
     def __init__(self):
-        super(FakeWebsocketBroker, self).__init__()
+        super().__init__()
 
         self.host = "localhost"
         self.port = 1888