@Test
public void testHashcode_twoUnEqualObjects_produceDifferentNumber() {

    int xHashcode = Fixture.x.hashCode();
    int notxHashcode = Fixture.notx.hashCode();
    assertTrue("Equal object, return unequal hashcode test fails", !(xHashcode == notxHashcode));
    int xHashcodeInt = Fixture.xInt.hashCode();
    int notxHashcodeInt = Fixture.notxInt.hashCode();
    assertTrue("Equal object, return unequal hashcode test fails", !(xHashcodeInt == notxHashcodeInt));
}