- Create tests/ directory with proper Python package structure
- Add test_color_utils.py with extensive test coverage for parse_color_string function
- Test all supported color formats:
- HEX formats: #RGB, #RGBA, #RRGGBB, #RRGGBBAA
- RGB comma-separated formats: "R,G,B" and "R,G,B,A"
- Edge cases: black, white, transparent colors
- Case-insensitive HEX parsing
- Whitespace handling in all formats
- Test comprehensive error handling for invalid inputs:
- Invalid HEX characters and lengths
- Out-of-range RGB values (negative and >255)
- Invalid RGB format (wrong number of values)
- Non-numeric RGB values
- Unsupported color formats
- Non-string inputs
- Update project configuration:
- Bump version to 1.2.1 in pyproject.toml
- Add git commit reminder to CLAUDE.md
- All tests use proper assertions with floating-point precision handling
- Tests designed to validate both successful parsing and proper error reporting
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
