public static void ClearTest()
        {
            string[] anArray = { "one", "two", "three", "four" };
            //tests that the collectionChanged events are fired.
            ReadOnlyCollectionAndPropertyChangedTester helper = new ReadOnlyCollectionAndPropertyChangedTester();
            ObservableCollection <string>         col         = new ObservableCollection <string>(anArray);
            ReadOnlyObservableCollection <string> readonlyCol = new ReadOnlyObservableCollection <string>(col);

            helper.ClearTest(readonlyCol, col);
        }
 public static void ClearTest()
 {
     string[] anArray = { "one", "two", "three", "four" };
     //tests that the collectionChanged events are fired.
     ReadOnlyCollectionAndPropertyChangedTester helper = new ReadOnlyCollectionAndPropertyChangedTester();
     ObservableCollection<string> col = new ObservableCollection<string>(anArray);
     ReadOnlyObservableCollection<string> readonlyCol = new ReadOnlyObservableCollection<string>(col);
     helper.ClearTest(readonlyCol, col);
 }