10 AI prompts to optimise, update, and improve existing JUnit 6 test classes. Covers refactoring for readability, JUnit 4 migration, removing unnecessary Spring contexts, fixing brittle mocks, adding boundary tests, consolidating duplicates, restructuring with @Nested, and full quality audits.
10 ready-to-use AI prompts to generate high-quality JUnit 6 test cases for new Java projects. Each prompt is engineered for GitHub Copilot, Claude, ChatGPT, or any LLM to produce complete, annotated, production-ready tests covering unit, integration, parameterized, and exception scenarios.
A comprehensive three-way comparison of JUnit 6, Spock, and TestNG. Covers syntax, data-driven tests, mocking, Spring Boot support, parallel execution, and ecosystem. Includes the same test written in all three frameworks and a clear decision guide for which to choose.
A clear explanation of the distinct roles of JUnit 6 and Mockito in Java testing. Covers what each tool does, how MockitoExtension bridges them, the division of responsibility between assertions and verification, and a complete responsibilities reference table.
A detailed, side-by-side comparison of JUnit 6 and TestNG: annotations, parameterized tests, test dependencies, parallel execution, assertions, Spring Boot integration, and ecosystem support. Includes real code examples for both frameworks and a decision guide.
A practical guide to AI-powered test generation for JUnit 6 projects. Covers GitHub Copilot, Diffblue Cover, and LLM prompting strategies. Includes real AI-generated test examples, a human review checklist, mutation testing validation, and a capability table for each AI tool.
A complete guide to performance testing in JUnit 6. Covers @Timeout for time bounds, assertTimeout for inline benchmarks, JMH (Java Microbenchmark Harness) setup with @Benchmark, Blackhole usage, integrating JMH results as JUnit assertions, and benchmarking Spring Boot methods.
A complete guide to mutation testing with PIT (Pitest) and JUnit 6. Covers what mutation testing is, Maven and Gradle setup, reading mutation reports, surviving mutant analysis, and how to use PIT to measure true test suite quality beyond code coverage.
A complete guide to property-based testing in JUnit 6 with jqwik. Covers @Property, @ForAll, constraint annotations, custom Arbitraries, domain-specific generators, shrinking, seed-based reproduction, and when property testing complements example-based tests.
A catalogue of the most common JUnit testing mistakes with before/after code fixes. Covers testing implementation details, missing assertion messages, swapped assertEquals arguments, @SpringBootTest misuse, tests without assertions, and unseeded random data.