public void CreateReadOnlyObservableCollection_Collection_Always_ReturnsObservableCollectionConstructorCollection(params string[] items)
        {
            var uut = new CollectionFactory();

            var source = new ObservableCollection <string>();

            var result = uut.CreateReadOnlyObservableCollection(source);

            foreach (var item in items)
            {
                source.Add(item);
            }

            result.ShouldBeOrderedEquivalentTo(source);
        }