anchor.diff:    Assert.AreEqual(true, TLuhn.Valid('095 245 88'));
   end;
   
  +procedure TLuhnTest.valid_strings_with_a_non_digit_added_at_the_end_become_invalid;
  +begin
  +  Assert.AreEqual(false, TLuhn.Valid('059a'));
  +end;
  +
   procedure TLuhnTest.valid_strings_with_a_non_digit_included_become_invalid;
   begin
     Assert.AreEqual(false, TLuhn.Valid('055a 444 285'));
  
positive.code:   DUnitX.TestFramework;
  
  const
    CanonicalVersion = '1.3.0';
  
  type
  
  
negative.code:     [Test]
      [Ignore]
      procedure valid_strings_with_a_non_digit_included_become_invalid;
  
      [Test]
      [Ignore]
      procedure valid_strings_with_a_non_digit_added_at_the_end_become_invalid;
  
      [Test]
      [Ignore]
  