Learn how to test your Spring REST APIs using Spring Boot 3 and Spring Framework 6 testing tools. This guide walks you through five different testing approaches, from simple unit tests to full end-to-end tests.
Spring Boot 3 provides several mature testing tools for REST APIs:
- MockMvc - Test Spring MVC controllers without a running server
- WebTestClient - Reactive/functional style API for testing (works with both reactive and servlet stacks)