Developed comprehensive test coverage for the Mutable Command List (MCL) feature in the oneapi-src/level-zero-tests repository, focusing on validating complex scenarios such as multi-kernel executions, event synchronization, and dynamic mutation of kernel arguments, group counts, group sizes, and global offsets. Leveraged C++ and low-level programming techniques to enhance the test harness, ensuring accurate verification of kernel property updates and event signaling after command list mutations. Emphasized API testing and concurrency to strengthen regression protection and provide a reliable baseline for future improvements. The work prioritized expanding test reliability and performance validation, with no major bug fixes during this period.