private async Task DownloadHandler(Xamarin.Forms.Button item)
{
ComicChapterList comicInformationChapter = comicDetailStructure.comicChapterList.Where(r => r.chapterLink == item.CommandParameter.ToString()).FirstOrDefault();
comicImagesStructure = await _parser.GetComicChapterImages(comicInformationChapter.chapterLink);
if (comicImagesStructure.comicChapterImageLink.Count > 0)
{
ComicDownloader downloader = new ComicDownloader();
bool isDownloadFinished = await downloader.FilesDownloader(comicImagesStructure.comicChapterImageLink, this.Title, comicImagesStructure.comicChapterNumber.ToString(), CommonInternalData.DownloadType.RCO, item);
item.Text = "Download";
item.IsEnabled = true;
if (isDownloadFinished)
{
await DisplayAlert("Downloaded", CurrentData.comic_response, "ok");
}
else
{
await DisplayAlert("Failed", CurrentData.comic_response, "ok");
}
}
else
{
await DisplayAlert("Hello", "Chapter Not Released Yet.", "ok");
}
return;
}
public async Task EmitTask_MustReturnValue()
{
var mgr = new RecyclableMemoryStreamManager();
var req = CreateRequest(1);
var downloader = new ComicDownloader(mgr);
var res = downloader.EmitTasks(req);
await res[0]();
}
public void GivenAnyRequest_Emit_MustReturnAllTasks(int count)
{
var mgr = new RecyclableMemoryStreamManager();
var req = CreateRequest(count);
var downloader = new ComicDownloader(mgr);
var tasks = downloader.EmitTasks(req);
Assert.AreEqual(count, tasks.Length);
}
public void GivenAnyRequest_CancelIt_MustNothingReturn()
{
var mgr = new RecyclableMemoryStreamManager();
var req = CreateRequest(10);
var tks = new CancellationTokenSource();
tks.Cancel();
var downloader = new ComicDownloader(mgr);
var res = downloader.EmitTasks(req, tks.Token);
Assert.AreEqual(0, res.Length);
}
public async Task CallBatchEmit_AllTaskMustBeRun()
{
var provider = new ResourceComicProvider();
var reqs = new DownloadItemRequest[]
{
new DownloadItemRequest(null),
new DownloadItemRequest(null),
new DownloadItemRequest(null),
new DownloadItemRequest(null),
};
var req = new ComicDownloadRequest(new NullSaver(), null, null, new DownloadItemRequest[0], provider);
var downloader = new ComicDownloader(new RecyclableMemoryStreamManager());
await ComicDownloaderExtensions.BatchEmitAsync(downloader, req);
}
public async Task EmitTaskWithListener_NotNeedToSave_TheMethodWasCalled()
{
var mgr = new RecyclableMemoryStreamManager();
var req = CreateRequest(1);
var listener = new NullDownloadListener();
req.Listener = listener;
var saver = (NullSaver)req.Saver;
saver.IsNeedToSave = false;
var downloader = new ComicDownloader(mgr);
var res = downloader.EmitTasks(req);
await res[0]();
Assert.IsTrue(listener.IsNotNeedToSaveAsync);
}
public async Task EmitTaskWithListener_ListenerMethodWasCalled()
{
var mgr = new RecyclableMemoryStreamManager();
var req = CreateRequest(1);
var listener = new NullDownloadListener();
req.Listener = listener;
var downloader = new ComicDownloader(mgr);
var res = downloader.EmitTasks(req);
await res[0]();
Assert.IsTrue(listener.IsReadyFetchAsync);
Assert.IsTrue(listener.IsBeginFetchPageAsync);
Assert.IsTrue(listener.IsReadySaveAsync);
Assert.IsTrue(listener.IsEndFetchPageAsync);
Assert.IsTrue(listener.IsComplatedSaveAsync);
}
public async Task GivenNullOrOutOfRangeValue_MustThrowException()
{
var req = new ComicDownloadRequest(new NullSaver(), null, null, new DownloadItemRequest[0], new NullSourceProvider());
var downloader = new ComicDownloader(new RecyclableMemoryStreamManager());
await Assert.ThrowsExceptionAsync <ArgumentNullException>(() => ComicDownloaderExtensions.EmitAsync(null, req));
await Assert.ThrowsExceptionAsync <ArgumentNullException>(() => ComicDownloaderExtensions.EmitAsync(downloader, null));
await Assert.ThrowsExceptionAsync <ArgumentNullException>(() => ComicDownloaderExtensions.BatchEmitAsync(null, req));
await Assert.ThrowsExceptionAsync <ArgumentNullException>(() => ComicDownloaderExtensions.BatchEmitAsync(downloader, null));
await Assert.ThrowsExceptionAsync <ArgumentOutOfRangeException>(() => ComicDownloaderExtensions.BatchEmitAsync(downloader, req, 0));
await Assert.ThrowsExceptionAsync <ArgumentOutOfRangeException>(() => ComicDownloaderExtensions.BatchEmitAsync(downloader, req, -1));
await Assert.ThrowsExceptionAsync <ArgumentOutOfRangeException>(() => ComicDownloaderExtensions.BatchEmitAsync(downloader, req, -5));
}
public async Task EmitTaskWithListener_Cancel_CancelListenerWasCalled()
{
var mgr = new RecyclableMemoryStreamManager();
var req = CreateRequest(1);
var listener = new NullDownloadListener();
req.Listener = listener;
var downloader = new ComicDownloader(mgr);
var tks = new CancellationTokenSource();
var res = downloader.EmitTasks(req, tks.Token);
tks.Cancel();
try
{
await res[0]();
}
catch (Exception) { }
Assert.IsTrue(listener.IsCanceledAsync);
}
public async Task EmitTaskWithListener_ThrowException_TheMethodWasCalled()
{
var sourceProvider = new ExceptionComicProvider();
var saver = new NullSaver();
var reqs = Enumerable.Range(0, 1)
.Select(x => new DownloadItemRequest(new ComicPage {
TargetUrl = "-no-"
}))
.ToArray();
var mgr = new RecyclableMemoryStreamManager();
var req = new ComicDownloadRequest(saver, null, null, reqs, sourceProvider);
var downloader = new ComicDownloader(mgr);
var listener = new NullDownloadListener();
req.Listener = listener;
var res = downloader.EmitTasks(req);
await res[0]();
Assert.IsTrue(listener.IsFetchPageExceptionAsync);
}
