public void Download_should_return_empty_result_for_null_uri()
{
//arrange
var target = new Downloader();
//act
var actual = target.Download(null);
//assert
Assert.AreEqual(0, actual.Length);
}
public void Download_should_return_stream_from_target_url()
{
//arrange
const string expected = "some string";
string actual;
using (var listener = new HttpListener())
{
var url = string.Format("http://localhost:{0}/", FreePort);
listener.Prefixes.Add(url);
listener.Start();
listener.BeginGetContext(AsynGetContext, new AsyncArguments(listener, expected));
var target = new Downloader();
//act
var actualStream = target.Download(new Uri(url));
//assert
listener.Stop();
var result = new byte[Encoding.Default.GetBytes(expected).Length];
actualStream.Read(result, 0, result.Length);
actual = Encoding.Default.GetString(result);
}
Assert.AreEqual(expected, actual);
}