Create mock tests that don't require API credentials #27
Description
Current tests require actual API credentials. This issue proposes adding mock-based tests.
Proposed Changes
- Implement mock responses for OpenAI API
- Create test fixtures for common test scenarios
- Add tests that run without requiring API credentials
- Ensure CI pipeline can run tests without credentials
Benefits
- Makes it easier to contribute to the project
- Enables CI testing without exposing credentials
- Provides faster test execution