[FIXED] How to run JUnit SpringJUnit4ClassRunner with Parametrized?

Issue

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

@RunWith(SpringJUnit4ClassRunner.class)
@RunWith(Parameterized.class)
@SpringApplicationConfiguration(classes = {ApplicationConfigTest.class})
public class ServiceTest {
}

But how can I use these two annotations in conjunction?

Solution

There are at least 2 options to do that:

1. Following http://www.blog.project13.pl/index.php/coding/1077/runwith-junit4-with-both-springjunit4classrunner-and-parameterized/

   Your test needs to look something like this:

    @RunWith(Parameterized.class)
    @ContextConfiguration(classes = {ApplicationConfigTest.class})
    public class ServiceTest {
   
        private TestContextManager testContextManager;
   
        @Before
        public void setUpContext() throws Exception {
            //this is where the magic happens, we actually do "by hand" what the spring runner would do for us,
           // read the JavaDoc for the class bellow to know exactly what it does, the method names are quite accurate though
          this.testContextManager = new TestContextManager(getClass());
          this.testContextManager.prepareTestInstance(this);
        }
        ...
    }
   

2. There is a github project https://github.com/mmichaelis/spring-aware-rule, which builds on previous blog, but adds support in a generalized way

   @SuppressWarnings("InstanceMethodNamingConvention")
   @ContextConfiguration(classes = {ServiceTest.class})
   public class SpringAwareTest {
   
       @ClassRule
       public static final SpringAware SPRING_AWARE = SpringAware.forClass(SpringAwareTest.class);
   
       @Rule
       public TestRule springAwareMethod = SPRING_AWARE.forInstance(this);
   
       @Rule
       public TestName testName = new TestName();
   
       ...
   }
   

So you can have a basic class implementing one of the approaches, and all tests inheriting from it.

Answered By - mavarazy
Answer Checked By - Willingham (JavaFixing Volunteer)