Developed comprehensive ES_NIF entity recognition testing enhancements for the NCATComp410/comp410_spring_2025 repository, focusing on improving detection accuracy and robustness. Leveraged Python and test automation frameworks to expand both positive and negative test coverage, ensuring ES_NIF detection worked reliably across a variety of input contexts and formats. Applied test-driven development and unit testing practices to validate correct recognition and to guard against false positives from short or invalid inputs. Enhanced test documentation and traceability by providing explicit commit references, resulting in a more maintainable and reliable testing suite that supports faster feedback and reduces production risk before release.