public void Throws_exception_if_message_does_not_match()
        {
            const string received = "What you have";
            const string expected = "what I want.";

            try
            {
                var result = new FailureResult(received);
                result.AssertFailure(expected);
            }
            catch (Exception ex)
            {
                Assert.Pass(ex.Message);
            }
            Assert.Fail("\"{0}\" is not \"{1}\"", received, expected);
        }