diff --git a/tests/unit_tests/services/gpt4all.py b/tests/unit_tests/services/gpt4all.py
new file mode 100644
index 0000000..e139b4e
--- /dev/null
+++ b/tests/unit_tests/services/gpt4all.py
@@ -0,0 +1,43 @@
+import unittest
+from unittest.mock import patch, MagicMock
+from gpt4all_service import GPT4AllService
+from omegaconf import DictConfig
+
+class TestGPT4AllService(unittest.TestCase):
+
+    def setUp(self):
+        self.cfg_mock = MagicMock(spec=DictConfig)
+        self.collection_name = "test_collection"
+        self.gpt4all_service = GPT4AllService(cfg=self.cfg_mock, collection_name=self.collection_name)
+
+    def test_init(self):
+        self.assertEqual(self.gpt4all_service.collection_name, self.collection_name)
+        # Add more assertions as needed
+
+    @patch('gpt4all_service.generate_collection')
+    def test_create_collection(self, generate_collection_mock):
+        collection_name = "new_collection"
+        self.assertTrue(self.gpt4all_service.create_collection(name=collection_name))
+        generate_collection_mock.assert_called_once_with(collection_name, self.cfg_mock.gpt4all_embeddings.size)
+
+    @patch('gpt4all_service.DirectoryLoader')
+    @patch('gpt4all_service.logger')
+    def test_embed_documents(self, logger_mock, directory_loader_mock):
+        directory_loader_mock.return_value.load_and_split.return_value = []
+        self.gpt4all_service.embed_documents(directory="dummy_path", file_ending=".pdf")
+        directory_loader_mock.assert_called_once()
+        logger_mock.info.assert_called()
+
+    @patch('gpt4all_service.GPT4All')
+    @patch('gpt4all_service.generate_prompt')
+    def test_summarize_text(self, generate_prompt_mock, gpt4all_mock):
+        generate_prompt_mock.return_value = "Mock Prompt"
+        gpt4all_instance = gpt4all_mock.return_value
+        gpt4all_instance.generate.return_value = "Mock Summary"
+        summary = self.gpt4all_service.summarize_text(text="Dummy text")
+        generate_prompt_mock.assert_called_once()
+        gpt4all_instance.generate.assert_called_once_with("Mock Prompt", max_tokens=300)
+        self.assertEqual(summary, "Mock Summary")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/tests/unit_tests/services/openai.py b/tests/unit_tests/services/openai.py
new file mode 100644
index 0000000..f461463
--- /dev/null
+++ b/tests/unit_tests/services/openai.py
@@ -0,0 +1,49 @@
+import unittest
+from unittest.mock import patch, MagicMock
+from open_ai_service import OpenAIService
+from omegaconf import DictConfig
+
+class TestOpenAIService(unittest.TestCase):
+
+    def setUp(self):
+        self.cfg_mock = MagicMock(spec=DictConfig)
+        self.collection_name = "test_collection"
+        self.openai_service = OpenAIService(cfg=self.cfg_mock, collection_name=self.collection_name)
+
+    def test_init(self):
+        # Test initialization logic here
+        self.assertEqual(self.openai_service.collection_name, self.collection_name)
+        # Add more assertions as needed
+
+    @patch('open_ai_service.generate_collection')
+    @patch('open_ai_service.logger')
+    def test_create_collection(self, logger_mock, generate_collection_mock):
+        collection_name = "new_collection"
+        self.assertTrue(self.openai_service.create_collection(name=collection_name))
+        generate_collection_mock.assert_called_once_with(collection_name, self.cfg_mock.openai_embeddings.size)
+        logger_mock.info.assert_called_once()
+
+    @patch('open_ai_service.DirectoryLoader')
+    @patch('open_ai_service.logger')
+    def test_embed_documents(self, logger_mock, directory_loader_mock):
+        # Mock the loader and its return value
+        directory_loader_mock.return_value.load_and_split.return_value = []
+        self.openai_service.embed_documents(directory="dummy_path", file_ending=".pdf")
+        directory_loader_mock.assert_called_once()
+        logger_mock.info.assert_called()
+
+    @patch('open_ai_service.openai')
+    @patch('open_ai_service.generate_prompt')
+    def test_summarize_text(self, generate_prompt_mock, openai_mock):
+        # Setup mock return values
+        generate_prompt_mock.return_value = "Mock Prompt"
+        openai_mock.api_key = "dummy_key"
+        openai_mock.chat.completions.create.return_value = MagicMock(choices=[MagicMock(messages=MagicMock(content="Mock Summary"))])
+
+        summary = self.openai_service.summarize_text(text="Dummy text")
+        generate_prompt_mock.assert_called_once()
+        openai_mock.chat.completions.create.assert_called_once()
+        self.assertEqual(summary, "Mock Summary")
+
+if __name__ == '__main__':
+    unittest.main()