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

        public void SumOfLong_SourceIsNull_ArgumentNullExceptionThrown()
        {
            IQueryable<long> sourceLong = null;
            Assert.Throws<ArgumentNullException>("source", () => sourceLong.Sum());
            Assert.Throws<ArgumentNullException>("source", () => sourceLong.Sum(x => x));
        }