JUnit 5 - State of the Union
summary
JUnit 5 modernizes testing with concrete changes: full Java 8 support enabling lambdas in assertions, dynamic test creation that builds tests at runtime via @TestFactory, and a modular engine model (Jupiter + Vintage) so legacy tests run alongside new ones. It replaces the old expected-exception parameter with assertThrows replacing expected parameter and adds extension points (class-, method-, and parameter-level), display names, parameter resolvers, and richer failure reporting. Crowdfunded development and migration caveats are noted with planned staged releases.
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chapters (12)
- 0:00Introduction
- 3:18Unit testing history
- 8:16JUnit 5 crowdfunding
- 15:09JUnit 5 core principles
- 18:52Test engines
- 25:07Dynamic tests
- 33:20Assertions and exceptions
- 39:10Test reporting
- 43:16Accessibility and extensions
- 48:05Lifecycle extensions
- 53:15Compatibility and future
- 56:00Release plans
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