Sam Donovan focused on improving test reliability in the robolectric/robolectric repository by addressing two core issues in Android system behavior emulation. Using Java and unit testing, Sam enhanced the Package Manager Shadows to accurately distinguish between original system image package information and updated data partition versions, ensuring correct version handling in tests. Additionally, Sam aligned ShadowActivity’s startActivityIfNeeded method with AOSP standards, introducing precondition checks and activity reuse to better simulate Android launch semantics. These targeted bug fixes, supported by expanded test coverage, reduced flaky tests and increased confidence in Robolectric’s ability to reproduce authentic Android behavior during development.