Worked on expanding test coverage in the gpuweb/cts repository by developing new tests for the i32 remainder operation, specifically targeting negative dividends across a range of non-power-of-two moduli. Focused on validating correct signed remainder behavior to address edge cases that could impact code generation paths and cross-browser consistency. Utilized TypeScript and software testing skills to design and implement these tests, ensuring that value-dependent behaviors were thoroughly checked. The work reduced the risk of regression in signed and unsigned remainder handling, contributing to a more robust and reliable WebGPU Conformance Test Suite for future development and browser compatibility.