STRATEGI TEST-DRIVEN DEVELOPMENT DALAM ARSITEKTUR MICROSERVICES UNTUK OPTIMALISASI PENGEMBANGAN APLIKASI PAYROLL

The development of the Payroll application at PT Sineas Kreatif Indonesia faces challenges in testing inter-service communication due to its microservices architecture. This study evaluates the effectiveness of the Test-Driven Development (TDD) approach in optimizing system development. TDD is implemented following the Red-Green-Refactor cycle using three unit testing frameworks: Jest, Mocha, and Chai. The research employs a mixed methods approach, combining qualitative observation with quantitative metrics such as code coverage and defect rate. The findings indicate that TDD improves system reliability through early error detection, enhances code quality with code coverage exceeding 96%, and reduces the defect rate to 4.33 per 1000 LOC. The adopted microservices architecture also demonstrates fault tolerance across services. A comparison with the non-TDD approach shows significant improvements in performance and system quality.
Keywords: Test-Driven Development, Microservices, Payroll, Unit Testing, Code Coverage, Defect Rate