public void InsertTest()
{
SortedObservableCollection <int> mySortedCollection = new SortedObservableCollection <int>();
mySortedCollection.Insert(0, 5);
mySortedCollection.Insert(0, 2);
mySortedCollection.Insert(1, 3);
mySortedCollection.Insert(0, 7);
mySortedCollection.Insert(1, 9);
Assert.AreEqual(5, mySortedCollection.Count);
Assert.AreEqual(2, mySortedCollection[0]);
Assert.AreEqual(3, mySortedCollection[1]);
Assert.AreEqual(5, mySortedCollection[2]);
Assert.AreEqual(7, mySortedCollection[3]);
Assert.AreEqual(9, mySortedCollection[4]);
}