private void PerformTest(IAudioDownloadOutputSample sample)
{
const string DownloadDirectory = "fakepath";
MockForAudioDownloadTest processMock = this.CreateProcessFactory(sample, DownloadDirectory);
YoutubeDl downloader = new YoutubeDl(processMock);
Dictionary <double, bool> ExpectedPercentsToBeReported = new Dictionary <double, bool>(sample.ExpectedPercents.Distinct().Select(x => new KeyValuePair <double, bool>(x, false)));
Dictionary <DownloadState, bool> ExpectedStatusesToBeReported = new Dictionary <DownloadState, bool>(sample.ExpectedDownloadStatuses.Distinct().Select(x => new KeyValuePair <DownloadState, bool>(x, false)));
using (IDownload progress = downloader.PrepareDownload(new Uri(sample.MediaUri), MediaFormat.MP3Audio, DownloadDirectory)) {
RunDownload(processMock, ExpectedPercentsToBeReported, ExpectedStatusesToBeReported, progress);
}
foreach (var item in ExpectedStatusesToBeReported)
{
Assert.IsTrue(item.Value, $"Expected download status {item.Key} was not reported by event {nameof(IDownload.DownloadStatusChanged)}.");
}
foreach (var item in ExpectedPercentsToBeReported)
{
Assert.IsTrue(item.Value, $"Expected download percentage {item.Key} was not reported by event {nameof(IDownload.PercentageChanged)}.");
}
}
private void RunDownload(MockForAudioDownloadTest processMock, Dictionary <double, bool> ExpectedPercentsToBeReported, Dictionary <DownloadState, bool> ExpectedStatusesToBeReported, IDownload progress)
{
progress.DownloadStatusChanged += (o, e) => {
Assert.AreEqual(e, progress.Status, $"The download status value reported by event {nameof(IDownload.DownloadStatusChanged)} ({e}) is not equal to the value set in {nameof(IDownload.Status)} ({progress.Status}).");
ExpectedStatusesToBeReported[e] = true;
};
progress.PercentageChanged += (o, e) => {
Assert.AreEqual(e, progress.Percentage, $"The download percentage value reported by event {nameof(IDownload.PercentageChanged)} ({e}) is not equal to the value set in {nameof(IDownload.Percentage)} ({progress.Percentage}).");
Assert.AreEqual(DownloadState.Downloading, progress.Status, $"The download percentage is changed when {nameof(IDownload.Status)} is not {DownloadState.Downloading}.");
Assert.IsTrue(ExpectedPercentsToBeReported.ContainsKey(e), $"Unexpected download percentage reported: {e}.");
ExpectedPercentsToBeReported[e] = true;
};
Assert.AreEqual(DownloadState.WaitingForStart, progress.Status, $"Download status was not in {DownloadState.WaitingForStart} status.");
Assert.AreEqual(0.0, progress.Percentage, $"Download process percentage was not 0.0 when status is {DownloadState.WaitingForStart}.");
Assert.IsFalse(processMock.ProcessStarted, $"Download process was started automatically, without invoking {nameof(IDownload.Start)}.");
progress.Start();
Assert.IsTrue(processMock.ProcessStarted, $"Youtube-dl was not started after invoking {nameof(IDownload.Start)}.");
Assert.IsTrue(processMock.ParametersPassedCorrectly, "Command-line arguments were passed incorrectly to youtube-dl.");
}