def test_zip_starts_with_zero(self):
     statement = FormatValidators.validate_zip("0123")
     self.assertFalse(statement)
 def test_zip_contains_letters(self):
     statement = FormatValidators.validate_zip("353A")
     self.assertFalse(statement)
 def test_zip_longer_than_4_chars(self):
     statement = FormatValidators.validate_zip("3534123")
     self.assertFalse(statement)
 def test_zip_is_correct(self):
     statement = FormatValidators.validate_zip("3534")
     self.assertEqual("3534", statement)