springboot-tdd

Spring Boot test-driven development involves writing a failing unit test first, implementing minimal code to pass, and iterating to achieve over 80% coverage. This workflow uses JUnit 5, Mockito, and MockMvc to ensure high-quality, maintainable services across unit and web layers.

Testing the Spring Boot web layer with MockMvc involves simulating HTTP requests and validating controller responses without deploying a full server. It pairs with Mockito to isolate controllers and ensure deterministic, fast web layer validations within a structured TDD workflow.

Testcontainers achieves environment parity for Spring Boot integration tests by provisioning lightweight Docker containers for databases or other dependencies during test execution. This ensures integration tests run against realistic, isolated environments, keeping tests deterministic and reliable.

Yes, JaCoCo is used to enforce test coverage in a Spring Boot TDD workflow. It measures code execution metrics during test runs, enabling developers to verify outcomes and maintain 80% or higher coverage across unit, integration, and web layer tests.

Yes, you can use Mockito and JUnit 5 together for Spring Boot unit tests. Mockito handles mocking external dependencies while JUnit 5 provides the testing framework, both working in tandem to create fast, deterministic unit tests within a structured TDD workflow.

To keep Spring Boot integration tests deterministic and fast, use CI-ready patterns and test data builders. This approach pairs with Testcontainers for isolated environment parity and JaCoCo for coverage enforcement, ensuring reliable, readable, and fast test outcomes.