Conneg with quality

gistfile1.cs

 [TestMethod]
        public void ConnegTest()
        {
            var selector = new FormatterSelector();

            var response = new HttpResponseMessage();
            response.RequestMessage = new HttpRequestMessage();
            var headers = response.RequestMessage.Headers;
            headers.Accept.Add(new MediaTypeWithQualityHeaderValue("text/plain"));
            headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json",0.8));
            headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/xml"));
            headers.Accept.Add(new MediaTypeWithQualityHeaderValue("*/*"));
            
            var context = new FormatterContext(response, false);

            var mediaType = new MediaTypeHeaderValue("text/plain");
            
            selector.SelectWriteFormatter(typeof (String), context,new MediaTypeFormatterCollection(),out mediaType);

            Assert.AreEqual("application/xml",mediaType.MediaType);
        }