springboot-tdd

Test-Driven Development for a Spring Boot REST API starts by writing failing tests with JUnit 5 and MockMvc, then implementing minimal code to pass them. This enforces high code quality and maintainability for new endpoints.

Achieving high code coverage in Spring Boot involves enforcing TDD principles and integrating JaCoCo. Writing failing tests first and refactoring ensures 80%+ coverage across unit, web, and integration tests.

Testcontainers works with JUnit 5 for Spring Boot integration testing by providing containerized database environments. It facilitates robust persistence testing scenarios within your TDD workflow.

Mock dependencies when unit testing a Spring Boot service using Mockito within JUnit 5 tests. This isolates the class being tested, such as a MarketService, to verify specific behaviors without external interactions.

You need Testcontainers for Spring Boot persistence testing when writing integration tests requiring real database interactions. It supports the TDD process by providing lightweight, disposable database instances during test execution.

You can use Mockito and MockMvc together in Spring Boot TDD. Mockito handles unit-level dependency mocking for services, while MockMvc tests the web layer, ensuring comprehensive coverage across different testing scenarios.