public void Should_write_string_to_stream()
{
var formatter = new PlainTextFormatter();
var content = new StringContent(string.Empty);
content.Headers.Clear();
var memoryStream = new MemoryStream();
var value = "Hello World";
var resultTask = formatter.WriteToStreamAsync(typeof(string), value, memoryStream, content, transportContext: null);
resultTask.Wait();
memoryStream.Position = 0;
string serializedString = new StreamReader(memoryStream).ReadToEnd();
serializedString.ShouldEqual(value);
}