JUnit 5: New Opportunities for Testing on the JVM
summary
Overview of JUnit 5’s actual deliverables: a rewritten, modular test platform with modular Platform + Jupiter + Vintage that adds a launcher and test engine API, a Jupiter programming model and an adapter for JUnit 4. It demonstrates concrete features: parameter resolver DI for constructors and methods, tagging and custom display names (emoji works in reports), parameterized/repeated/dynamic tests, interface default method tests, and an extension model. Live demos show assertThrows, lambda assertions and the difference between preemptive vs non‑preemptive timeouts, plus working Gradle/Maven/IDE and Spring Framework 5 integrations.
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chapters (19)
- 0:00Introduction to JUnit 5
- 1:58Impetus and history
- 5:51Architecture overview
- 7:39Platform and engine API
- 10:59Ecosystem and tool support
- 13:21Integration and setup
- 15:08Extension and lifecycle
- 17:18Assertions and assumptions
- 23:13Code migration demonstration
- 31:44Tags and display names
- 33:56Advanced injection
- 35:23Hands-on features demo
- 39:24Conditional execution
- 40:42Test interfaces
- 41:52Nested test classes
- 43:01Repeated and parametrized tests
- 44:23Dynamic tests
- 45:14Spring integration
- 47:05Resources and conclusion
