System.Net.Tests.WebUtilityTests.UrlDecode_SharedTestData C# (CSharp) Method

        public static IEnumerable<Tuple<string, string>> UrlDecode_SharedTestData()
        {
            // Escaping needed - case insensitive hex
            yield return Tuple.Create("%2F%5C%22%09Hello!+%E2%99%A5%3F%2F%5C%22%09World!+%E2%99%A5%3F%E2%99%A5", "/\\\"\tHello! \u2665?/\\\"\tWorld! \u2665?\u2665");
            yield return Tuple.Create("%2f%5c%22%09Hello!+%e2%99%a5%3f%2f%5c%22%09World!+%e2%99%a5%3F%e2%99%a5", "/\\\"\tHello! \u2665?/\\\"\tWorld! \u2665?\u2665");

            // Unecessary escaping
            yield return Tuple.Create("%61%62%63", "abc");
            yield return Tuple.Create("\u1234%61%62%63\u1234", "\u1234abc\u1234");

            // Surrogate pair
            yield return Tuple.Create("%F0%90%8F%BF", "\uD800\uDFFF");
            yield return Tuple.Create("\uD800\uDFFF", "\uD800\uDFFF");

            // Spaces
            yield return Tuple.Create("abc+def", "abc def");
            yield return Tuple.Create("++++", "    ");
            yield return Tuple.Create("    ", "    ");

            // No decoding needed
            yield return Tuple.Create("abc", "abc");
            yield return Tuple.Create("", "");
            yield return Tuple.Create("Hello, world", "Hello, world");
            yield return Tuple.Create("\u1234\u2345", "\u1234\u2345");
            yield return Tuple.Create("abc\u1234\u2345def\u1234", "abc\u1234\u2345def\u1234");

            // Invalid percent encoding
            yield return Tuple.Create("%", "%");
            yield return Tuple.Create("%A", "%A");
            yield return Tuple.Create("%\01", "%\01");
            yield return Tuple.Create("%1\0", "%1\0");
            yield return Tuple.Create("%g1", "%g1");
            yield return Tuple.Create("%1g", "%1g");
            yield return Tuple.Create("%G1", "%G1");
            yield return Tuple.Create("%1G", "%1G");
        }