public void TestTrackableCollection_Last_Empty()
{
var a = new Simple("a");
var b = new Simple("b");
var c = new Simple("c");
var coll = new TrackableCollection <Simple>()
{
a, b, c, b, c, b, b
};
var last = coll.Last();
Assert.AreEqual(b, last);
coll.Clear();
coll.Last();
}
