public void GetOrCreate_And_Dispose_Works()
{
var cache = new CameraCache <int>();
// Create the camera
var camera = cache.GetOrCreate(0, 0);
Assert.IsNotNull(camera);
// Get the same camera
var sameCamera = cache.GetOrCreate(0, 0);
Assert.IsNotNull(sameCamera);
Assert.True(ReferenceEquals(camera, sameCamera));
Assert.AreEqual(camera.GetInstanceID(), sameCamera.GetInstanceID());
// Get another camera
var otherCamera = cache.GetOrCreate(1, 0);
Assert.IsNotNull(otherCamera);
Assert.False(ReferenceEquals(camera, otherCamera));
Assert.AreNotEqual(camera.GetInstanceID(), otherCamera.GetInstanceID());
// Clear the cameras
cache.Dispose();
// Assert the cameras are destroyed on the C++ side
Assert.True(camera.Equals(null));
Assert.True(sameCamera.Equals(null));
Assert.True(otherCamera.Equals(null));
}
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());
}
public void GetOrCreate_And_Clear_Works()
{
using (var cache = new CameraCache <int>())
{
var cameras = new Camera[5];
for (var i = 0; i < cameras.Length; ++i)
{
cameras[i] = cache.GetOrCreate(i, 0);
Assert.IsNotNull(cameras[i]);
}
// Clear the cameras
cache.Clear();
// Assert the cameras are destroyed on the C++ side
for (var i = 0; i < cameras.Length; ++i)
{
Assert.True(cameras[i].Equals(null));
}
}
}