Testing Spring Boot Applications Demystified

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" summary

Practical roadmap for testing Spring Boot apps that names actual tools and measurable wins: use Spring Boot Starter Test with JUnit 6, Mockito, AssertJ and utilities like JSONPath, XMLUnit and Awaitility; prefer slice tests (e.g. @WebMvcTest + MockMvc) to catch path mapping, bean validation and security issues; use Testcontainers (Postgres + Ryuk) for realistic integration tests; enable context caching to cut builds (example: 26 → 12 minutes); add Spring Test Profiler and PIT mutation testing to find weak tests; Spring Boot 4 adds context pausing and improved test clients.

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" chapters (10)

1. 0:00Welcome
2. 5:24Automated testing in AI era
3. 10:04Unit testing with Spring Boot
4. 21:27Slice testing web/persistence
5. 29:29Integration testing challenges
6. 31:18Testcontainers for external infra
7. 37:38Faster tests with context caching
8. 45:07Parallelizing tests
9. 47:18Mutation testing for quality
10. 49:24Summary

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