Have FacesMessages implements an interface

[sguimont]

It is possible to have the FacesMessages class implements an interface because I want to make unit test on my bean with EasyMock (http://www.easymock.org/) library and this library can only mock an interface.

Code to test:

@Name("action")
@Interceptors(SeamInterceptor.class)
public class Action implements IAction {
 @In(create = true)
 private FacesMessages facesMessages;

 public void addErrorMessage(String aMessageKey) {
 this.facesMessages.add(FacesMessage.SEVERITY_INFO, "${" + aMessageKey + "}");
 }

 protected void setFacesMessages(FacesMessage aFacesMessages) {
 this.facesMessages = aFacesMessages;
 }

Test code.

public class ActionUnitTest extends TestCase {

 private Action classUnderTest;
 private FacesMessages mockFacesMessages;

 public void testAddErrorMessage() {
 // Setup
 expect(this.mockFacesMessages.add("${test.key}"));
 replay(this.mockFacesMessages);

 // Execute test
 this.classUnderTest.addErrorMessage("test.key");

 // Verify
 verify(this.mockFacesMessages);
 }

 protected void setUp() throws Exception {
 this.mockFacesMessages = createMock(FacesMessages.class); // EXCEPTION Cause an exception because the class is not an interface
 this.classUnderTest = new Action();
 this.classUnderTest.setFacesMessages(this.mockEntityManager);
 }
}

Thanks,

[gavin.king]

Um. If I did this for FacesMessages, I should also do it for all the other built-in components (pain!).

Can't EasyMock proxy a concrete class?! Tell them to use CGLIB, we have been doing this in Hibernate for 5 years!

[sguimont]

I look more closely to EasyMock documentation and I found they have released a "Class Extension" library to support class mocking.

Thanks.