additional tests for the embeddings and langchain

[thompsonson]

PR Type

Tests, Enhancement

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Description

• Enhanced the cache loading logic in OpenAIEmbeddingGeneratorAdapter to avoid unnecessary file creation and ensure valid initialization with an empty dictionary.
• Added a new fixture in the test configuration to provide the path to the resources directory.
• Introduced new tests for handling an existing but empty cache file and verifying cache creation on a new adapter instance.
• Developed comprehensive unit tests for the LangChainClient, covering initialization, chain configuration, and response generation, including scenarios for success, unconfigured chain, and retry mechanisms.

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Changes walkthrough 📝

	Relevant files
Enhancement	cache.py Enhance cache loading and initialization logic                      det/embeddings/cache.py Improved cache loading logic to avoid unnecessary file creation. Added logic to create a cache file if it does not exist. Ensured valid initialization of the cache with an empty dictionary. +5/-8
Tests	conftest.py Add resources directory fixture for tests                                tests/unit/conftest.py Added a fixture to provide the path to the resources directory. +7/-0      test_openai_embedding_generator_adapter.py Add tests for cache handling in OpenAIEmbeddingGeneratorAdapter tests/unit/embeddings/test_openai_embedding_generator_adapter.py Added test for handling an existing but empty cache file. Added test to verify cache creation on new adapter instance. +27/-0    test_llm_langchain.py Add comprehensive tests for LangChainClient                            tests/unit/test_llm_langchain.py Added initialization test for LangChainClient. Added unit tests for chain configuration in LangChainClient. Added response generation tests including retry mechanism. +96/-0

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[github-actions]

PR Reviewer Guide 🔍

⏱️ Estimated effort to review: 3 🔵🔵🔵⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ Key issues to review Exception Handling Consider adding specific exception handling for pickle operations in _load_cache method to manage potential pickle errors more gracefully. Test Coverage Ensure that tests for the LangChainClient cover scenarios where the external dependencies fail, such as network issues or API limits.

[github-actions]

PR Code Suggestions ✨

Category	Suggestion	Score
Robustness	Add error handling for file operations Add error handling for potential exceptions when opening or writing to the cache file to enhance robustness. det/embeddings/cache.py [72-73] -with open(self.cache_file_path, "wb") as cache_file: - pickle.dump({}, cache_file) # Initialize with an empty dictionary +try: + with open(self.cache_file_path, "wb") as cache_file: + pickle.dump({}, cache_file) # Initialize with an empty dictionary +except IOError as e: + logger.error(f"Failed to write to cache file: {e}") Suggestion importance[1-10]: 9 Why: Adding error handling for file operations enhances the robustness of the code by preventing potential crashes due to IO errors, which is crucial for maintaining application stability.	9
Security	Replace pickle with json for safer serialization Replace the direct use of pickle for cache serialization with a safer alternative like json to avoid potential security risks associated with pickle. det/embeddings/cache.py [73] -pickle.dump({}, cache_file) # Initialize with an empty dictionary +json.dump({}, cache_file) # Initialize with an empty dictionary Suggestion importance[1-10]: 8 Why: Using json instead of pickle for serialization is a good security practice, as pickle can execute arbitrary code during deserialization, posing a security risk. This suggestion addresses a significant security concern.	8
Best practice	Use context manager for file operations Use a context manager for file operations to ensure that the file is properly closed after its creation, even if errors occur. tests/unit/embeddings/test_openai_embedding_generator_adapter.py [101] -open(cache_file_path, 'wb').close() # Create an empty file +with open(cache_file_path, 'wb') as f: + pass # Create an empty file and ensure it's closed Suggestion importance[1-10]: 7 Why: Using a context manager ensures that the file is properly closed after its creation, even if errors occur, which is a best practice for resource management and improves code reliability.	7
Enhancement	Improve cache file existence check with detailed logging Replace the assertion for checking if the cache file exists with a more explicit check that also logs the outcome for better debugging. tests/unit/embeddings/test_openai_embedding_generator_adapter.py [123] -assert cache_file_path.exists(), "Cache file should be created on adapter initialization." +if not cache_file_path.exists(): + logger.error("Cache file was not created on adapter initialization.") + raise FileNotFoundError("Cache file was not created.") +else: + logger.info("Cache file successfully created.") Suggestion importance[1-10]: 6 Why: Replacing the assertion with a more explicit check and logging provides better debugging information, enhancing code maintainability and clarity, though it is not critical.	6