public void PreventParallelAttemptsToStart()
{
var camera = new Camera(cameraLogger.Object, streamLogger.Object, CaptureSettings.Default, Camera.CreateVideoCapture);
var logger = new PropertyChangedLogger();
camera.PropertyChanged += logger.OnPropertyChanged;
Task.WaitAll(Enumerable.Repeat(Task.Run(() => camera.Start()), Environment.ProcessorCount).ToArray());
Assert.Equal(1, logger.Notifications[camera].Count(x => x.Value == nameof(Camera.Stream)));
}
public void RemainStoppedIfAttemptCreateNewVideoCaptureFailed()
{
var camera = new Camera(cameraLogger.Object, streamLogger.Object, CaptureSettings.Default, _ => throw new TestException());
var logger = new PropertyChangedLogger();
camera.PropertyChanged += logger.OnPropertyChanged;
Assert.Throws <TestException>(() => camera.Start());
Assert.False(camera.IsRunning);
Assert.Empty(logger.Notifications);
}
public void ProvideNewStreamWhenStarted()
{
var camera = new Camera(cameraLogger.Object, streamLogger.Object, CaptureSettings.Default, Camera.CreateVideoCapture);
var logger = new PropertyChangedLogger();
camera.PropertyChanged += logger.OnPropertyChanged;
camera.Start();
Assert.NotNull(camera.Stream);
Assert.Equal(1, logger.Notifications[camera].Count(x => x.Value == nameof(Camera.Stream)));
}
public void NotifyWhenItWasStarted()
{
var camera = new Camera(cameraLogger.Object, streamLogger.Object, CaptureSettings.Default, Camera.CreateVideoCapture);
var logger = new PropertyChangedLogger();
camera.PropertyChanged += logger.OnPropertyChanged;
camera.Start();
Assert.True(camera.IsRunning);
Assert.Equal(1, logger.Notifications[camera].Count(x => x.Value == nameof(Camera.IsRunning)));
}
public void CompleteStreamWhenStopped()
{
var camera = new Camera(cameraLogger.Object, streamLogger.Object, CaptureSettings.Default, Camera.CreateVideoCapture);
var logger = new PropertyChangedLogger();
var observer = new TestImageObserver <Rgb>();
camera.PropertyChanged += logger.OnPropertyChanged;
camera.Start();
using (camera.Stream.Subscribe(observer))
{
camera.Stop();
}
Assert.Null(camera.Stream);
Assert.Equal(2, logger.Notifications[camera].Count(x => x.Value == nameof(Camera.Stream)));
Assert.True(observer.StreamCompleted);
}
