public void ImageAsyncDownloadTest()
{
MemoryStream sourceResponseStream = new MemoryStream();
TestResources.testimage.Save(sourceResponseStream, ImageFormat.Png);
sourceResponseStream.Position = 0;
Mock <HttpWebRequest> mockRequest = MockManager.Mock <HttpWebRequest>(Constructor.NotMocked);
MockObject <HttpWebResponse> mockResponse = MockManager.MockObject <HttpWebResponse>(Constructor.Mocked);
mockResponse.ExpectAndReturn("GetResponseStream", sourceResponseStream);
mockRequest.ExpectAndReturn("GetResponse", mockResponse.Object);
_imageAsyncCompletedTrigger = new AutoResetEvent(false);
HttpWebService service = new HttpWebService();
service.DownloadImageAsync("http://www.battleclinic.com", ImageAysncDownloadTestCompleted, null);
_imageAsyncCompletedTrigger.WaitOne();
if (_imageAsyncDownloadResult.Error != null)
{
Assert.Fail(_imageAsyncDownloadResult.Error.Message);
}
Assert.IsNotNull(_imageAsyncDownloadResult.Result, "No image retrieved");
_imageAsyncCompletedTrigger = null;
_imageAsyncDownloadResult = null;
}
/// <summary>
/// Callback used when images are downloaded, it takes care to invoke another callback provided as our user state.
/// </summary>
/// <param name="e"></param>
/// <param name="state"></param>
private static void GotImage(DownloadImageAsyncResult e, object state)
{
GetImageCallback callback = (GetImageCallback)state;
if (e.Error == null)
{
// Invokes on the UI thread.
Dispatcher.BeginInvoke(() => callback(e.Result));
}
else
{
ExceptionHandler.LogException(e.Error, true);
callback(null);
}
}
private void ImageAysncDownloadTestCompleted(DownloadImageAsyncResult e, object state)
{
_imageAsyncDownloadResult = e;
_imageAsyncCompletedTrigger.Set();
}
