public void StopResumeOnTheFlyDownloadTest()
{
var stopCount = 0;
var downloadCompletedSuccessfully = false;
var expectedFileSize = DownloadTestHelper.FileSize150Kb; // real bytes size
var address = DownloadTestHelper.File150KbUrl;
var file = new FileInfo(Path.GetTempFileName());
var config = new DownloadConfiguration()
{
BufferBlockSize = 1024,
ChunkCount = 8,
ParallelDownload = false,
MaxTryAgainOnFailover = 100,
OnTheFlyDownload = true
};
var progressCount = config.ChunkCount * (int)Math.Ceiling((double)expectedFileSize / config.ChunkCount / config.BufferBlockSize);
var downloader = new DownloadService(config);
downloader.DownloadProgressChanged += delegate { Interlocked.Decrement(ref progressCount); };
downloader.DownloadFileCompleted += (s, e) =>
{
if (e.Cancelled)
{
Interlocked.Increment(ref stopCount);
}
else if (e.Error == null)
{
downloadCompletedSuccessfully = true;
}
};
downloader.CancelAfterDownloading(10); // Stopping after start of downloading.
downloader.DownloadFileAsync(address, file.FullName).Wait(); // wait to download stopped!
Assert.AreEqual(1, stopCount);
downloader.CancelAfterDownloading(10); // Stopping after resume of downloading.
downloader.DownloadFileAsync(downloader.Package).Wait(); // resume download from stooped point.
Assert.AreEqual(2, stopCount);
Assert.IsFalse(downloadCompletedSuccessfully);
downloader.DownloadFileAsync(downloader.Package).Wait(); // resume download from stooped point, again.
Assert.IsTrue(file.Exists);
Assert.AreEqual(expectedFileSize, downloader.Package.TotalFileSize);
Assert.AreEqual(expectedFileSize, file.Length);
Assert.IsTrue(progressCount <= 0);
Assert.AreEqual(2, stopCount);
Assert.IsTrue(downloadCompletedSuccessfully);
file.Delete();
}