System.Linq.Tests.SelectTests.ForcedToEnumeratorDoesntEnumerateList C# (CSharp) Method

        public void ForcedToEnumeratorDoesntEnumerateList()
        {
            var iterator = NumberRangeGuaranteedNotCollectionType(0, 3).ToList().Select(i => i);
            var en = iterator as IEnumerator<int>;
            Assert.False(en != null && en.MoveNext());
        }