Luke Yeh migrated the test suite in the google/flax repository to use bracket notation for array access, replacing the deprecated .value attribute. This focused refactor aligned the test code with updated API conventions, reducing the risk of future misalignment and simplifying ongoing maintenance. Working primarily in Python and leveraging JAX, Luke updated modules_test.py and transforms_test.py through two targeted commits. The changes improved test readability and consistency, making it easier for new contributors to onboard and for the team to maintain the codebase. The work demonstrated a methodical approach to refactoring and a clear understanding of testing best practices.