System.Linq.Tests.SumTests.SumOfLong_SelectorIsNull_ArgumentNullExceptionThrown C# (CSharp) Метод

        public void SumOfLong_SelectorIsNull_ArgumentNullExceptionThrown()
        {
            IQueryable<long> sourceLong = Enumerable.Empty<long>().AsQueryable();
            Expression<Func<long, long>> selector = null;
            Assert.Throws<ArgumentNullException>("selector", () => sourceLong.Sum(selector));
        }