Is it possible to create a mock object that implements multiple interfaces with EasyMock?

Question

Is it possible to create a mock object that implements several interfaces with EasyMock?

For example, interface Foo and interface Closeable

Answer 1

An alternative of the most voted answer still based on Mockito but with annotations. You can set the extraInterfaces directly from the Mock annotation as next:

@RunWith(MockitoJUnitRunner.class)
public class MyTest {
    @Mock(extraInterfaces = Closeable.class)
    private Foo foo;
    ...
}

NB: extraInterfaces is of type Class[] so you can specify several interfaces if needed.

If you need to mock method calls of the extra interfaces you will need to cast your mock. For example let's say that I want to throw an IOException when I call close() on my mock foo, the corresponding code would then be:

Mockito.doThrow(IOException.class).when((Closeable) foo).close();