diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 62da0901..81a48f41 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -31,9 +31,8 @@ on:
 jobs:
   unit_tests:
     strategy:
-      max-parallel: 2
       matrix:
-        python-version: [ 3.7, 3.8, 3.9, "3.10" ]
+        python-version: [ 3.7, 3.8, 3.9, "3.10", 3.11 ]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
diff --git a/requirements/test.txt b/requirements/test.txt
index 48548151..38446d9f 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -1,4 +1,11 @@
 pytest
 pytest-timeout
 pytest-cov
-ovos-translate-server-plugin
\ No newline at end of file
+ovos-translate-server-plugin
+
+# Below for #189
+ovos-classifiers>=0.0.0a37
+mycroft-mimic3-tts[all]<1.0
+nltk~=3.8
+# Failing case installs nltk 3.3, passing installed 3.8.1
+# ovos-tts-plugin-mimic3>=0.0.1a2
\ No newline at end of file
diff --git a/test/unittests/test_g2p.py b/test/unittests/test_g2p.py
index 40b1964a..905ca881 100644
--- a/test/unittests/test_g2p.py
+++ b/test/unittests/test_g2p.py
@@ -1,6 +1,6 @@
 import unittest
 
-from unittest.mock import patch
+from unittest.mock import patch, Mock
 from enum import Enum
 from ovos_plugin_manager.utils import PluginTypes, PluginConfigTypes
 
@@ -72,5 +72,39 @@ def test_get_config(self, get_config):
 
 
 class TestG2PFactory(unittest.TestCase):
-    from ovos_plugin_manager.g2p import OVOSG2PFactory
-    # TODO
+    def test_mappings(self):
+        from ovos_plugin_manager.g2p import OVOSG2PFactory
+        self.assertIsInstance(OVOSG2PFactory.MAPPINGS, dict)
+        for key in OVOSG2PFactory.MAPPINGS:
+            self.assertIsInstance(key, str)
+            self.assertIsInstance(OVOSG2PFactory.MAPPINGS[key], str)
+            self.assertNotEqual(key, OVOSG2PFactory.MAPPINGS[key])
+
+    @patch("ovos_plugin_manager.g2p.load_g2p_plugin")
+    def test_get_class(self, load_plugin):
+        from ovos_plugin_manager.g2p import OVOSG2PFactory
+        from ovos_plugin_manager.templates.g2p import Grapheme2PhonemePlugin
+        global_config = {"g2p": {"module": "dummy"}}
+        g2p_config = {"module": "test-g2p-plugin-test"}
+
+        # Test load plugin mapped global config
+        plugin = OVOSG2PFactory.get_class(global_config)
+        self.assertEqual(plugin, Grapheme2PhonemePlugin)
+
+        # Test load plugin explicit TTS config
+        OVOSG2PFactory.get_class(g2p_config)
+        load_plugin.assert_called_with("test-g2p-plugin-test")
+
+    @patch("ovos_plugin_manager.g2p.OVOSG2PFactory.get_class")
+    def test_create(self, get_class):
+        from ovos_plugin_manager.g2p import OVOSG2PFactory
+        get_class = Mock()
+        # TODO
+
+    def test_create_arpa(self):
+        # Testing a specific failure reported in #189
+        from ovos_plugin_manager.g2p import OVOSG2PFactory
+        from ovos_plugin_manager.templates.g2p import Grapheme2PhonemePlugin
+        config = {"module": "ovos-g2p-plugin-heuristic-arpa"}
+        plugin = OVOSG2PFactory.create(config)
+        self.assertIsInstance(plugin, Grapheme2PhonemePlugin)
diff --git a/test/unittests/test_stt.py b/test/unittests/test_stt.py
index a1705dd3..45949096 100644
--- a/test/unittests/test_stt.py
+++ b/test/unittests/test_stt.py
@@ -153,4 +153,3 @@ def test_create(self, get_class):
         get_class.assert_called_with(expected_config)
         plugin_class.assert_called_with(expected_config)
         self.assertEqual(plugin, plugin_class())
-