System.Net.WebHeaderCollectionTests.WebHeaderCollectionTest.Getter_Success C# (CSharp) Method

        public void Getter_Success()
        {
            string[] keys = { "Accept", "uPgRaDe", "Custom" };
            string[] values = { "text/plain, text/html", " HTTP/2.0 , SHTTP/1.3,  , RTA/x11 ", "\"xyzzy\", \"r2d2xxxx\", \"c3piozzzz\"" };
            WebHeaderCollection w = new WebHeaderCollection();

            for (int i = 0; i < keys.Length; ++i)
            {
                string key = keys[i];
                string value = values[i];
                w[key] = value;
            }

            for (int i = 0; i < keys.Length; ++i)
            {
                string key = keys[i];
                string expected = values[i].Trim();
                Assert.Equal(expected, w[key]);
                Assert.Equal(expected, w[key.ToUpperInvariant()]);
                Assert.Equal(expected, w[key.ToLowerInvariant()]);
            }
        }