public async Task UpdateSourceImageAfterDownloading()
{
var imageDownloaderViewModel = new ImageDownloaderViewModel(new FileDownloader(), new ViewFactory());
imageDownloaderViewModel.Url = @"http://lifeandjoy.ru/uploads/posts/2015-07/1438256217_lifeandjoy.ru_02.jpg";
await imageDownloaderViewModel.StartDownloadAsync();
Assert.IsNotNull(imageDownloaderViewModel.SourceImage);
}
public async Task CreateExceptionMessageWhenDownloadFailed()
{
var mockFileDownLoader = Substitute.For <IFileDownloader>();
mockFileDownLoader
.Download(Arg.Any <string>(), Arg.Any <Action <double> >())
.Throws(new WebException());
var isCReated = false;
var mockViewFactory = Substitute.For <IViewFactory>();
mockViewFactory
.When(x => x.CreateExceptionViewDialogAsync(Arg.Any <string>()))
.Do(_ => isCReated = true);
var imageDownloaderViewModel = new ImageDownloaderViewModel(mockFileDownLoader, mockViewFactory);
await imageDownloaderViewModel.StartDownloadAsync();
Assert.That(isCReated, Is.True);
}
public async Task<double> CalculateTotalProgressWhenTwoDownloading(double firstProgress, double secondProgress)
{
var mockfirtFileDownloader = Substitute.For<IFileDownloader>();
mockfirtFileDownloader
.When(x => x.Download(Arg.Any<string>(), Arg.Any<Action<double>>()))
.Do(x => x.Arg<Action<double>>().Invoke(firstProgress));
var mockSecondFileDownloader = Substitute.For<IFileDownloader>();
mockSecondFileDownloader
.When(x => x.Download(Arg.Any<string>(), Arg.Any<Action<double>>()))
.Do(x => x.Arg<Action<double>>().Invoke(secondProgress));
var firstImageDownloaderViewModel = new ImageDownloaderViewModel(mockfirtFileDownloader, new ViewFactory());
var secondImageDownloaderViewModel = new ImageDownloaderViewModel(mockSecondFileDownloader, new ViewFactory());
var mainViewModel = new MainViewModel(firstImageDownloaderViewModel,
secondImageDownloaderViewModel,
new ImageDownloaderViewModel(new FileDownloader(), new ViewFactory()));
await Task.WhenAll(firstImageDownloaderViewModel.StartDownloadAsync(), secondImageDownloaderViewModel.StartDownloadAsync());
return mainViewModel.TotalDownloadingProgress;
}