How to run JUnit SpringJUnit4ClassRunner with Parametrized?

Question

The following code is invalid due to duplicate @RunWith annotation:

@RunWith(SpringJUnit4ClassRunner.class)
@RunWith(Parameterized.class)
@Sprin         


        

Answer 1

There is another solution with JUnit 4.12 without the need of Spring 4.2+.

JUnit 4.12 introduces ParametersRunnerFactory which allow to combine parameterized test and Spring injection.

public class SpringParametersRunnerFactory implements ParametersRunnerFactory {
@Override
  public Runner createRunnerForTestWithParameters(TestWithParameters test) throws InitializationError {
    final BlockJUnit4ClassRunnerWithParameters runnerWithParameters = new BlockJUnit4ClassRunnerWithParameters(test);
    return new SpringJUnit4ClassRunner(test.getTestClass().getJavaClass()) {
      @Override
      protected Object createTest() throws Exception {
        final Object testInstance = runnerWithParameters.createTest();
        getTestContextManager().prepareTestInstance(testInstance);
        return testInstance;
      }
    };
  }
}

The factory can be added to test class to give full Spring support like test transaction, reinit dirty context and servlet test.

@UseParametersRunnerFactory(SpringParametersRunnerFactory.class)
@RunWith(Parameterized.class)
@ContextConfiguration(locations = {"/test-context.xml", "/mvc-context.xml"})
@WebAppConfiguration
@Transactional
@TransactionConfiguration
public class MyTransactionalTest {

  @Autowired
  private WebApplicationContext context;

  ...
}

If you need Spring context inside @Parameters static method to provide parameters to test instances, please see my answer here How can I use the Parameterized JUnit test runner with a field that's injected using Spring?.