text: import unittest
  
  from katas.kyu_6.valid_phone_numbers import validPhoneNumber
  
  
  class ValidPhoneNumberTestCase(unittest.TestCase):
      def test_true(self):
          self.assertTrue(validPhoneNumber('(123) 456-7890'))
  
      def test_false(self):
          self.assertFalse(validPhoneNumber('(1111)555 2345'))
  
      def test_false_2(self):
          self.assertFalse(validPhoneNumber('(098) 123 4567'))
  
      def test_false_3(self):
          self.assertFalse(validPhoneNumber('(123) 456-7890abc'))
  