FirstAndSecondRingRegion extends FirstRingRegion { @Override public Object clone() { return new FirstAndSecondRingRegion(getCenter()); } FirstAndSecondRingRegion(final String geohash); @Override Object clone();  }
@Test public void testClone() { FirstAndSecondRingRegion actual; FirstAndSecondRingRegion expected; expected = new FirstAndSecondRingRegion("u1x0etp"); actual = (FirstAndSecondRingRegion)expected.clone(); assertEquals(expected, actual); }