Worked on the newrelic/newrelic-python-agent repository to modernize the test suite by removing the external mock dependency and migrating all tests to use Python’s built-in unittest.mock module. This update streamlined dependency management and aligned the project with standard Python testing practices, reducing maintenance overhead and improving the reliability of continuous integration workflows. The approach included targeted updates to leverage unittest.mock.patch, ensuring consistent and reproducible test environments. By simplifying the test setup and eliminating external dependencies, the work enhanced onboarding for new contributors and contributed to more stable, maintainable testing processes using Python and established testing methodologies.