@Override protected TestUserClassBase[] getTestData() { Random rnd = new Random(874597969123412341L); return new TestUserClassBase[]{ new TestUserClass1(rnd.nextInt(), "foo", rnd.nextLong()), new TestUserClass2(rnd.nextInt(), "bar", rnd.nextFloat()), new TestUserClass3(rnd.nextInt(), "bar", rnd.nextFloat()) }; }