Tests.SignUtilTests.GetCanonicalQueryString_should_match_sample C# (CSharp) Method

        public void GetCanonicalQueryString_should_match_sample()
        {
            const string before = ""
                + "X-Amz-Date=20110909T233600Z"
                + "&X-Amz-SignedHeaders=content-type%3Bhost%3Bx-amz-date"
                + "&Action=ListUsers"
                + "&Version=2010-05-08"
                + "&X-Amz-Algorithm=AWS4-HMAC-SHA256"
                + "&X-Amz-Credential=AKIDEXAMPLE%2F20110909%2Fus-east-1%2Fiam%2Faws4_request";

            var canonicalQueryString = new Uri("http://foo.com?" + before).GetCanonicalQueryString();
            const string expected = "Action=ListUsers&Version=2010-05-08&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIDEXAMPLE%2F20110909%2Fus-east-1%2Fiam%2Faws4_request&X-Amz-Date=20110909T233600Z&X-Amz-SignedHeaders=content-type%3Bhost%3Bx-amz-date";

            Trace.WriteLine("Actual:   " + canonicalQueryString);
            Trace.WriteLine("Expected: " + expected);

            Assert.AreEqual(expected, canonicalQueryString);
        }