@Test
 public void testTwoDigitNegativeNonZeroPrefix() {
   String coord = "-31.340";
   assertTrue(String.format("[%s] should be valid.", coord), validator.isValid(coord, null));
 }
 @Test
 public void testOutsideRangeNegative() {
   String coord = "-1000";
   assertFalse(String.format("[%s] should be valid.", coord), validator.isValid(coord, null));
 }
 @Test
 public void testOneDigitPrefix() {
   String coord = "1.340";
   assertTrue(String.format("[%s] should be valid.", coord), validator.isValid(coord, null));
 }