J
JUnit
The standard unit testing framework for Java — annotations, assertions, parameterised tests, and a rich extension model.
JUnit 5 (Jupiter) redesigned the framework around Java 8 features — lambdas, extensions, and nested test classes. Its @Test, @BeforeEach, @ParameterizedTest, and @ExtendWith annotations form the foundation of Java testing. Mockito, Spring Boot Test, and virtually every Java testing tool integrates with JUnit.
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testingjavaunit-testingtddannotationsjupiter