EasyMock: mocking a call to the same object

[B Rook]

I have a question about EasyMock. I find that I am unable to mock calls to another method within the object (via this.). For example, I have 2 methods:

public A performTransformation(B b){
Log.addLogEntry();
return transform(b);
}
public A transform(B b)

I can test Log.addLogEntry and transform with JUnit. However, I want to test performTransformation. I don't really want to test transform or Log.addLogEntry again so I thought that I could use EasyMock. I can mock Log, but I can't add an expect for transform. Is there anyway to do this?

In the meantime, we've moved transform to another object and mocked that, however, this seems incorrect.

Any suggestions?

[Lasse Koskela]

You could simply create an anonymous subclass of the class you're testing and override the method you don't want to exercise:

public class Foo {
    public A performTransformation(B b){
        Log.addLogEntry();
        return transform(b);
    }
 
    public A transform(B b) {
    }
}
 
public class FooTest extends TestCase {
    public void testPerformTransformation() throws Exception {
 
        final A transformedA = new A(...);   // we need a fake transformation result
 
        Foo subject = new Foo() {
            public A transform(B b) {
                return transformedA;
            }
        };
 
        A actual = subject.performTransformation(new B());
 
        assertSame("performTransformation() should return the exact same " +
                   "object that we pass to it from our overridden " +
                   "transform() method", transformedA, actual);
    }
}