springboot-tdd

Spring Boot integration testing with Testcontainers and DataJpaTest validates database interactions using real containerized environments. This approach leverages SpringBootTest for end-to-end service validation while ensuring your persistence layer functions correctly against actual database instances.

Test-Driven Development for Spring Boot follows the structured Red-Green-Refactor cycle. You write failing tests first, implement minimal code to pass them, then refactor while maintaining test validation using JUnit 5, Mockito, and AssertJ for readable assertions.

Testing Spring Boot controllers with MockMvc isolates the web layer for HTTP request and response validation. You mock service dependencies to ensure unit testing focuses strictly on controller routing, status codes, and JSON serialization behavior.

Spring Boot TDD fully supports JUnit 5 and Mockito for isolated component testing. You mock external dependencies to ensure unit tests evaluate single classes without triggering Spring context loading or database connections.

You enforce code coverage in Spring Boot by integrating JaCoCo to measure test execution metrics across unit, web, and integration tests. This ensures your Test-Driven Development workflow maintains high code quality and maintainability standards.