public class SpikeTest {
    public static class First extends Parent {
    }

    public static class Second extends Parent {
    }

    public static abstract class Parent {
        public String getValue() {
            return "parent";
        }
    }

    @Mocked
    private First first;
    @Mocked
    private Second second;

    @Test
    public void test() throws Exception {
        new Expectations() {{
            first.getValue();
            result = "first";

            second.getValue();
            result = "second"; //this recording overwrites previous recording on first object
        }};
        assertEquals(second.getValue(), "second");
        assertEquals(first.getValue(), "first"); //fails here, recorded "first" value is overwritten by "second"
    }
}