BeanCreationException on Spring TestNG PowerMock Test

Question

I get BeanCreationExceptionwhen using @AutoWired(Spring Annotation) and @PrepareForTest(PowerMock) and running the TestNG test with the Spring tag.

I have a Spring controller that is scanned through component validation.

I am testing TestNG, Mockito and PowerMock.

I am trying to spy on an auto-wired controller that is connected to the test via: @AutoWiredannotation.

Here is the start of the test class:

@PowerMockIgnore("*")
@WebAppConfiguration
@ContextConfiguration(locations = { "classpath:applicationContext-test.xml" })
@PrepareForTest(IWantAHamburgerController.class)
public class IWantAHamburgerControllerTest extends AbstractTestNGSpringContextTests {

    @Autowired
    private WebApplicationContext wac;
    @Autowired 
    private MockHttpSession session;
    @Autowired 
    private MockHttpServletRequest request;
    @Autowired
    private IWantAHamburgerController iWantAHamburgerController;

    private MockMvc mockMvc;

    @ObjectFactory
    public IObjectFactory getObjectFactory() {
        return new org.powermock.modules.testng.PowerMockObjectFactory();
    }

     @BeforeClass
     public void setup() {
         this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();

         // see the note at the bottom of this post about this line
         //iWantAHamburgerController = (IWantAHamburgerController) applicationContext.getBean("iWantAHamburgerController");
     }

I am trying to test the get method on IWantAHamburgerController. It looks like this:

    @Test
    public void testGetHamburgerAfterAskingThisQuestion() throws Exception {
        Principal p = PowerMockito.mock(Principal.class);
        PowerMockito.when(p.getName()).thenReturn("oneofthefiveguys");

        IWantAHamburgerController spy = PowerMockito.spy(iWantAHamburgerController);

        PowerMockito.doReturn("oneofthefiveguys").when(spy).getUserName("oneofthefiveguys");

        mockMvc.perform(get("/hamburgers/everythinghamburger.html")).andExpect(status().isOk())
                .andExpect(view().name("jsp/hamburger/everythinghamburger"))
                .andExpect(forwardedUrl("jsp/hamburger/everythinghamburger"));

        PowerMockito.verifyPrivate(spy).invoke("initGrill", "oneofthefiveguys");

        new org.mockito.internal.debugging.MockitoDebuggerImpl().printInvocations(spy);
    }

Inside the test, I want to look into autwired IWantAHamburgerControllerto verify that the method initGrillwas called by the GET method on the controller.

If I delete @PrepareForTest(IWantAHamburgerController.class), I do not receive BeanCreationException, but then PowerMock does not work.

. IWantAHamburgerController bean, , ClassCastException.

:

org.springframework.beans.factory.BeanCreationException: bean 'com.fiveguys.controllers.IWantAHamburgerControllerTest': ; org.springframework.beans.factory.BeanCreationException: autowire: com.fiveguys.controllers.IWantAHamburgerController com.fiveguys.controllers.IWantAHamburgerControllerTest.iWantAHamburgerController; org.springframework.beans.factory.NoSuchBeanDefinitionException: bean [com.fiveguys.controllers.IWantAhamburgerController] :