@Test
 public void invalid_latitude() {
   assertThat(validator.isValid(fromWkt("POINT(19 59)"))).isFalse();
   assertThat(validator.isValid(fromWkt("POINT(32 71)"))).isFalse();
 }
 @Test
 public void validity_bounds() {
   assertThat(validator.isValid(fromWkt("POLYGON((19 59.5, 19 70.5, 32 70.5, 32 59.5, 19 59.5))")))
       .isTrue();
 }
 @Test
 public void invalid_longitude() {
   assertThat(validator.isValid(fromWkt("POINT(18 59.5)"))).isFalse();
   assertThat(validator.isValid(fromWkt("POINT(32.5 70.5)"))).isFalse();
 }
 @Test
 public void helsinki_is_valid() {
   assertThat(validator.isValid(fromWkt("POINT(24.938466 60.170014)"))).isTrue();
 }