diff --git a/aprsd/plugins/fortune.py b/aprsd/plugins/fortune.py
index 0ac6bb1..d0f44ca 100644
--- a/aprsd/plugins/fortune.py
+++ b/aprsd/plugins/fortune.py
@@ -8,7 +8,7 @@ from aprsd.utils import trace
 
 LOG = logging.getLogger("APRSD")
 
-DEFAULT_FORTUNE_PATH = '/usr/games/fortune'
+DEFAULT_FORTUNE_PATH = "/usr/games/fortune"
 
 
 class FortunePlugin(plugin.APRSDRegexCommandPluginBase):
@@ -45,7 +45,7 @@ class FortunePlugin(plugin.APRSDRegexCommandPluginBase):
                 command,
                 shell=True,
                 timeout=3,
-                universal_newlines=True,
+                text=True,
             )
             output = (
                 output.replace("\r", "")
diff --git a/aprsd/plugins/location.py b/aprsd/plugins/location.py
index 4855979..879f12b 100644
--- a/aprsd/plugins/location.py
+++ b/aprsd/plugins/location.py
@@ -2,8 +2,10 @@ import logging
 import re
 import time
 
-from geopy.geocoders import ArcGIS, AzureMaps, Baidu, Bing, GoogleV3
-from geopy.geocoders import HereV7, Nominatim, OpenCage, TomTom, What3WordsV3, Woosmap
+from geopy.geocoders import (
+    ArcGIS, AzureMaps, Baidu, Bing, GoogleV3, HereV7, Nominatim, OpenCage,
+    TomTom, What3WordsV3, Woosmap,
+)
 from oslo_config import cfg
 
 from aprsd import packets, plugin, plugin_utils
@@ -39,8 +41,8 @@ class USGov:
         result = plugin_utils.get_weather_gov_for_gps(lat, lon)
         # LOG.info(f"WEATHER: {result}")
         # LOG.info(f"area description {result['location']['areaDescription']}")
-        if 'location' in result:
-            loc = UsLocation(result['location']['areaDescription'])
+        if "location" in result:
+            loc = UsLocation(result["location"]["areaDescription"])
         else:
             loc = UsLocation("Unknown Location")
 
diff --git a/tests/client/test_factory.py b/tests/client/test_factory.py
new file mode 100644
index 0000000..4c2257e
--- /dev/null
+++ b/tests/client/test_factory.py
@@ -0,0 +1,75 @@
+import unittest
+from unittest import mock
+
+from aprsd.client.factory import Client, ClientFactory
+
+
+class MockClient:
+    """Mock client for testing."""
+
+    @classmethod
+    def is_enabled(cls):
+        return True
+
+    @classmethod
+    def is_configured(cls):
+        return True
+
+
+class TestClientFactory(unittest.TestCase):
+    """Test cases for ClientFactory."""
+
+    def setUp(self):
+        """Set up test fixtures."""
+        self.factory = ClientFactory()
+        # Clear any registered clients from previous tests
+        self.factory.clients = []
+
+    def test_singleton(self):
+        """Test that ClientFactory is a singleton."""
+        factory2 = ClientFactory()
+        self.assertEqual(self.factory, factory2)
+
+    def test_register_client(self):
+        """Test registering a client."""
+        self.factory.register(MockClient)
+        self.assertIn(MockClient, self.factory.clients)
+
+    def test_register_invalid_client(self):
+        """Test registering an invalid client raises error."""
+        invalid_client = mock.MagicMock(spec=Client)
+        with self.assertRaises(ValueError):
+            self.factory.register(invalid_client)
+
+    def test_create_client(self):
+        """Test creating a client."""
+        self.factory.register(MockClient)
+        client = self.factory.create()
+        self.assertIsInstance(client, MockClient)
+
+    def test_create_no_clients(self):
+        """Test creating a client with no registered clients."""
+        with self.assertRaises(Exception):
+            self.factory.create()
+
+    def test_is_client_enabled(self):
+        """Test checking if any client is enabled."""
+        self.factory.register(MockClient)
+        self.assertTrue(self.factory.is_client_enabled())
+
+    def test_is_client_enabled_none(self):
+        """Test checking if any client is enabled when none are."""
+        MockClient.is_enabled = classmethod(lambda cls: False)
+        self.factory.register(MockClient)
+        self.assertFalse(self.factory.is_client_enabled())
+
+    def test_is_client_configured(self):
+        """Test checking if any client is configured."""
+        self.factory.register(MockClient)
+        self.assertTrue(self.factory.is_client_configured())
+
+    def test_is_client_configured_none(self):
+        """Test checking if any client is configured when none are."""
+        MockClient.is_configured = classmethod(lambda cls: False)
+        self.factory.register(MockClient)
+        self.assertFalse(self.factory.is_client_configured())
diff --git a/tests/test_main.py b/tests/test_main.py
index ab1303d..276a42c 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -1,15 +1,9 @@
-import sys
 import unittest
+from unittest import mock
 
 from aprsd.plugins import email
 
 
-if sys.version_info >= (3, 2):
-    from unittest import mock
-else:
-    from unittest import mock
-
-
 class TestMain(unittest.TestCase):
     @mock.patch("aprsd.plugins.email._imap_connect")
     @mock.patch("aprsd.plugins.email._smtp_connect")