In JUnit 5, the @RunWith annotation has been replaced by the more powerful @ExtendWith annotation.
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4. Migrating from a JUnit4-Based Runner
Let's now migrate a test that uses a JUnit4-based runner to JUnit5.
We're going to use a Spring test as an example:
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(classes = { SpringTestConfiguration.class }) public class GreetingsSpringTest { // ... }
If we want to migrate this test to JUnit5 we need to replace the @RunWith annotation with the new @ExtendWith:
@ExtendWith(SpringExtension.class) @ContextConfiguration(classes = { SpringTestConfiguration.class }) public class GreetingsSpringTest { // ... }
The SpringExtension class is provided by Spring 5 and integrates the Spring TestContext Framework into JUnit 5. The @ExtendWith annotation accepts any class that implements the Extension interface.
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