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Welcome to the JUnit wiki!

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• Getting Started
• Release Notes
  • 4.13
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  • 4.9
• Maintainer Documentation
• Deprecation Policy
• I want to help!
• Latest JUnit Questions on StackOverflow
• Latest JUnit API JavaDocs

JUnit Usage and Idioms

• Assertions - your bread and butter for unit testing
• Test Runners - how tests should be executed
• Aggregating tests in Suites - how to combine multiple related tests into a test suite
• Test Execution Order - specifying what order to run unit tests
• Exception Testing - how to specify expected exceptions in unit tests
• Matchers and assertThat - how to use Hamcrest matchers and more descriptive assertions
• Ignoring Tests - how to disable test methods or classes
• Timeout for Tests - how to specify maximum execution times for tests
• Parameterized Tests - writing tests that can be executed multiple times with different parameter values
• Assumptions with Assume - similar to assertions, but without making tests fail
• Rules - stop extending abstract test classes and start writing test rules
• Theories - write tests that are more like scientific experiments using randomly generated data
• Test Fixtures - specify set up and clean up methods on a per-method and per-class basis
• Categories - group your tests together for easier test filtering
• Use with Maven - how to use JUnit with your Maven build
• Use with Gradle - how to use JUnit with your Gradle build
• Multithreaded code and Concurrency - basic ideas behind testing concurrent code
• Java contract test helpers
• Continuous Testing

Third-party extensions

• Custom Runners
• github.com/trajano/commons-testing for UtilityClassTestUtil per #646
• System Rules – A collection of JUnit rules for testing code that uses java.lang.System.
• JUnit Toolbox – Provides runners for parallel testing, a PoolingWait class to ease asynchronous testing, and a WildcardPatternSuite which allow you to specify wildcard patterns instead of explicitly listing all classes when you create a suite class.
• junit-dataprovider – A TestNG like dataprovider (see here) runner for JUnit.
• junit-quickcheck – QuickCheck-style parameter suppliers for JUnit theories. Uses junit.contrib's version of the theories machinery, which respects generics on theory parameters.
• JGiven - Behavior-Driven Development (BDD) for JUnit