Worked on the OpenFUSIONToolkit/JPEC repository to enhance the reliability of ODE output tests, focusing on stabilizing test infrastructure rather than introducing new features. Addressed a critical bug by updating tests to reflect the latest output logic, ensuring conditional writing of essential outputs. Refactored the initialization process for OdeState and DconOutput within the test suite to support updated constructors, which improved test robustness and reduced the likelihood of flaky failures. Utilized Julia for bug fixing, refactoring, and testing, resulting in more dependable validation for downstream integrations and minimizing regression risks in the evolving codebase during the development period.