public static void RemoveAtTest()
        {
            string[] anArrayString = { "one", "two", "three", "four" };
            ObservableCollection <string>              col         = new ObservableCollection <string>(anArrayString);
            ReadOnlyObservableCollection <string>      readonlyCol = new ReadOnlyObservableCollection <string>(col);
            ReadOnlyCollectionAndPropertyChangedTester helper      = new ReadOnlyCollectionAndPropertyChangedTester();

            helper.RemoveItemAtTest(readonlyCol, col, 1);
        }
 public static void RemoveAtTest()
 {
     string[] anArrayString = { "one", "two", "three", "four" };
     ObservableCollection<string> col = new ObservableCollection<string>(anArrayString);
     ReadOnlyObservableCollection<string> readonlyCol = new ReadOnlyObservableCollection<string>(col);
     ReadOnlyCollectionAndPropertyChangedTester helper = new ReadOnlyCollectionAndPropertyChangedTester();
     helper.RemoveItemAtTest(readonlyCol, col, 1);
 }