Developed an initial unit test suite for the argument_parser module in the usestrix/strix repository, focusing on validating type conversion utilities and error handling logic. Leveraged Python and pytest to create tests for functions handling boolean, list, and dictionary conversions, as well as for the ArgumentConversionError class. Established a pytest-based test infrastructure and configuration, providing a foundation for continuous integration and future test expansion. Documented the baseline test coverage to support safer refactoring and faster validation of code changes. This work laid the groundwork for ongoing quality assurance and maintainability, emphasizing robust unit testing and clear test organization practices.