Testing light compile for INPC to RX

gistfile1.cs

    public static class NotifyPropertyChangedExtensions
    {
        public static IObservable<TProp> GetPropertyChanges<TSource, TProp>(this TSource source, Expression<Func<TSource, TProp>> propertySelector, bool lightCompile = true)
            where TSource : INotifyPropertyChanged
        {
            var propertyName = GetPropertyName(propertySelector);

            return Observable
                .FromEvent<PropertyChangedEventHandler, PropertyChangedEventArgs>(
                    h => new PropertyChangedEventHandler((s, e) => h(e)),
                    h => source.PropertyChanged += h,
                    h => source.PropertyChanged -= h)
                .Where(e => string.Equals(propertyName, e.PropertyName, StringComparison.Ordinal))
                .Let(o =>
                {
                    var selector = lightCompile ? propertySelector.LightCompile() : propertySelector.Compile();
                    return o.Select(e => selector(source));
                });
        }
    }

    [TestClass]
    public class NotifyPropertyChangedExtensionTest
    {
        [TestMethod]
               public void TimeTestLightCompile()
        {
            const int IterCount = 10000;

            var testObj = new TestBindableType();

            var stream = testObj
                .GetPropertyChanges(t => t.MyValue, lightCompile: true)
                .Select(x => new Unit())
                .StartWith(new Unit())
                .Timestamp()
                .Select(t => t.Timestamp.Ticks);

            using (stream.Subscribe(Console.WriteLine))
            {
                for (int i = 0; i < IterCount; i++)
                    testObj.MyValue = i.ToString();
            }
        }

        [TestMethod]
        public void TimeTestCompile()
        {
            const int IterCount = 10000;

            var testObj = new TestBindableType();

            var stream = testObj.GetPropertyChanges(t => t.MyValue, lightCompile: false)
                .Select(x => new Unit())
                .StartWith(new Unit())
                .Timestamp()
                .Select(t => t.Timestamp.Ticks);

            using (stream.Subscribe(Console.WriteLine))
            {
                for (int i = 0; i < IterCount; i++)
                    testObj.MyValue = i.ToString();
            }
        }
    }