Testing GWTP with Mockito

Question

I am using Mockito to test my GWTP project and I got some error:

    com.google.inject.CreationException: Guice creation errors:

1) No implementation for javax.servlet.http.HttpServletRequest was bound.
  while locating com.google.inject.Provider<javax.servlet.http.HttpServletRequest>
    for parameter 0 at com.gwtplatform.dispatch.server.guice.request.DefaultRequestProvider.<init>(DefaultRequestProvider.java:35)
  at com.gwtplatform.dispatch.server.guice.DispatchModule.configure(DispatchModule.java:135)

Below is the code for unit test:

@Mock
private TestActionHandler mockTestActionHandler;

@Before
public void setUp() {
    Injector injector = Guice.createInjector(new ServerModule(), new MockHandlerModule() {

        @Override
        protected void configureMockHandlers() {
                bindMockActionHandler(TestActionHandler.class, 
                        mockTestActionHandler);
            }
        }); 
}

Here is the code for TestActionHandler:

public class TestActionHandler implements ActionHandler<TestAction, TestResult> {

    private final Provider<HttpServletRequest> provider;

    @Inject
    public RetrieveEventsUsingCategoryIdActionHandler(
            final Provider<HttpServletRequest> provider) {
        this.provider = provider;
    }

    @Override
    public TestResult execute(TestAction action, ExecutionContext context) {
        //handle action
    }
}

Could anyone help me fix this? Thaks a lot!

Answer 1

Thanks to dinde's post in GWTP group, I have resolved this problem.

It seems that the test is complaining about missing Provider for HttpServletRequest, so in the setUp of the test, I add a provider fo the HttpServletRequest and the problem is solved. Here's the working code:

@Mock
private TestActionHandler mockTestActionHandler;
@Mock
private HttpServletRequest servletRequest;

@Before
public void setUp() {
    Injector injector = Guice.createInjector(new ServerModule(), new MockHandlerModule() {

        @Override
        protected void configureMockHandlers() {
                bindMockActionHandler(TestActionHandler.class, 
                        mockTestActionHandler);
            }
        });

        @SuppressWarnings("unused")
        @Provides 
        public HttpServletRequest createServletRequest() { 
            return servletRequest; 
        } 
}

Answer 2

The field annotated both with @Bind and @Mock inside a test class

@Bind
@Mock
private HttpServletRequest request;

works for me using mycila-testing-guice2 plugin.