public void SoundEffectFromContent(string filename, long durationTicks)
        {
            var services = new GameServiceContainer();

            services.AddService <IGraphicsDeviceService>(new GraphicsDeviceProxy());
            var content     = new ContentManagerProxy(services);
            var soundEffect = content.Load <SoundEffect>(Paths.Audio(filename));

            Assert.AreEqual(durationTicks, soundEffect.Duration.Ticks);
        }