How to combine these two RunWith in Java JUnit?

Question

@RunWith(SpringRunner.class) @Runwith(PowerMockRunner.class)

How can I merge these two annotation. As RunWith only supports single value.

Answer 1

If your are working with JUnit 5 you can't use it since PowerMock doesn't support it yet.

With JUnit 4 use @Runwith(PowerMockRunner.class) and add SpringRunner.class using @PowerMockRunnerDelegate annotation. e.g.

    import org.springframework.test.context.junit4.SpringRunner; 
    import org.powermock.modules.junit4.PowerMockRunner;
    import org.powermock.modules.junit4.PowerMockRunnerDelegate;

    @RunWith(PowerMockRunner.class)
    @PowerMockRunnerDelegate(SpringRunner.class)
    @PrepareForTest(LogHelper.class)
    @WebMvcTest(controllers = UserController.class)
    public class UserControllerTest {

        @Autowired
        private MockMvc mockMvc;

        @Mock
        private UserService userService;

        @Test
        public void saveShouldReturnOK() {
            mockStatic(LogHelper.class);
            doNothing().when(LogHelper.info(anyString()));
            ....
        }
    }