Extracted the API request logic in `finnhub_news.py` to a private `_fetch_company_news_data` helper to properly catch `Exception` and return an empty list without violating the `str` return type of the main `get_company_news` function. Explicitly allows `ThirdPartyTimeoutError` to propagate to preserve timeout behavior.
Added corresponding tests to mock generic API exceptions and invalid response types. Retained the test verifying fallback behavior for invalid numeric values within `get_insider_transactions`.
Co-authored-by: aguzererler <6199053+aguzererler@users.noreply.github.com>
- Implement integration tests for scanner vendor routing, ensuring correct routing to Alpha Vantage and fallback to yfinance.
- Create comprehensive unit tests for TTM analysis, covering metrics computation and report formatting.
- Introduce fail-fast vendor routing tests to verify immediate failure for methods not in FALLBACK_ALLOWED.
- Develop extensive integration tests for the yfinance data layer, mocking external calls to validate functionality across various financial data retrieval methods.