Learn how JUnit 6 Assumptions differ from Assertions, and how to use assumeTrue, assumeFalse, assumingThat, and conditional annotations like @EnabledOnOs, @EnabledOnJre, and @EnabledIfEnvironmentVariable to skip tests gracefully when preconditions are not met.
A complete reference guide to every JUnit 6 assertion method: assertEquals, assertThrows, assertAll, assertTimeout, assertIterableEquals, and more — each explained with real code examples, expected output, and when to use which.
A practical guide to writing clean, readable, and maintainable JUnit 6 tests. Covers the Arrange-Act-Assert pattern, one behaviour per test, @DisplayName, assertAll, avoiding logic in tests, and six habits that separate good tests from great ones.
A complete guide to the JUnit 6 test lifecycle: @BeforeAll, @BeforeEach, @AfterEach, @AfterAll. Includes execution order diagrams, PER_METHOD vs PER_CLASS lifecycle comparison, nested class behaviour, and real console output examples.
A deep dive into JUnit 6's three-pillar architecture: Platform, Jupiter, and Vintage. Learn how the TestEngine SPI, Launcher, and LauncherDiscoveryRequest work together, with code examples showing programmatic test execution and custom engine concepts.
A detailed, side-by-side comparison of JUnit 6 and JUnit 5 — architecture, annotations, parameterized tests, extension model, and records support — plus a practical migration guide updated for Spring Boot 4.0, which makes JUnit 6 the default testing baseline.
Learn how to structure your JUnit 6 test projects for scalability and long-term maintainability. Covers package layout, naming conventions, test base classes, test helpers, and real-world best practices used in production Java projects.
A comprehensive guide to configuring JUnit 6 with Maven and Gradle. Covers Surefire plugin, Failsafe plugin, multi-module projects, test filtering, IDE integration, and common configuration mistakes to avoid.
A step-by-step guide to installing JUnit 6, setting it up with Maven and Gradle, configuring your IDE, and writing your very first passing unit test. Includes complete code examples and expected output.
A complete, hands-on JUnit 6 tutorial covering everything from installation and first tests to advanced topics like parameterized tests, extensions, Spring Boot integration, parallel execution, and CI/CD pipelines. Perfect for beginners and experienced Java developers alike.