@Test
 public void validateCorrectPhoneNumber() throws Exception {
   ValidatorsTestSuite.assertValidationResultOK(validator, validator.validate("123-456-7890"));
   ValidatorsTestSuite.assertValidationResultOK(validator, validator.validate("123.456.7890"));
   ValidatorsTestSuite.assertValidationResultOK(validator, validator.validate("123 456 7890"));
   ValidatorsTestSuite.assertValidationResultOK(validator, validator.validate("(123) 456 7890"));
   ValidatorsTestSuite.assertValidationResultOK(
       validator, validator.validate("+1 (123) 456-7890"));
   ValidatorsTestSuite.assertValidationResultOK(validator, validator.validate("1-123-456-7890"));
   ValidatorsTestSuite.assertValidationResultOK(validator, validator.validate("11234567890"));
 }
 @Test
 public void validateEmptyValue() throws Exception {
   ValidatorsTestSuite.assertValidationResultOK(validator, validator.validate(""));
 }
 @Test
 public void validateNullValue() throws Exception {
   ValidatorsTestSuite.assertValidationResultOK(validator, validator.validate(null));
 }