public void GetOrCreate_And_ClearCamerasUnusedFor_Works()
{
using (var cache = new CameraCache <int>())
{
// Create cameras
var cameras = new Camera[5];
for (var i = 0; i < cameras.Length; ++i)
{
cameras[i] = cache.GetOrCreate(i, i);
Assert.IsNotNull(cameras[i]);
}
var frameCount = cameras.Length - 1;
for (var frameWindow = frameCount; frameWindow >= 0; --frameWindow)
{
// Clear the cameras older than i frames
cache.ClearCamerasUnusedFor(frameWindow, frameCount);
// Assert the cameras are destroyed on the C++ side if they are unused
// since i frames or more
var cameraAreDestroyedBeforeFrameCount = frameCount - frameWindow;
for (var j = 0; j < cameraAreDestroyedBeforeFrameCount; ++j)
{
Assert.True(cameras[j].Equals(null), $"Camera {j} is unused since {frameWindow} frames and must be destroyed.");
}
for (var j = cameraAreDestroyedBeforeFrameCount; j < cameras.Length; ++j)
{
Assert.False(cameras[j].Equals(null), $"Camera {j} is used since {frameWindow} frames and must be alive.");
}
}
}
}
public void UsingDisposedObject_Throws()
{
var cache = new CameraCache <int>();
cache.Dispose();
Assert.Throws <System.ObjectDisposedException>(() => cache.GetOrCreate(0, 0));
Assert.Throws <System.ObjectDisposedException>(() => cache.ClearCamerasUnusedFor(0, 0));
Assert.Throws <System.ObjectDisposedException>(() => cache.Clear());
Assert.Throws <System.ObjectDisposedException>(() => cache.Dispose());
}
