public void Then_It_Fails_The_InvalidContact_List()
        {
            const bool expected = false;
            var phoneNumbers = new PhoneNumberChecker();

            var actual = phoneNumbers.Check(InValidContactList);

            Assert.That(actual, Is.EqualTo(expected));
        }
        public void Then_It_Passes_The_ValidContact_List()
        {
            const bool expected = true;
            var phoneNumbers = new PhoneNumberChecker();

            var actual = phoneNumbers.Check(ValidContactList);

            Assert.That(actual, Is.EqualTo(expected));
        }