System.Linq.Tests.SumTests.SumOfInt_SourceIsNull_ArgumentNullExceptionThrown C# (CSharp) Method

        public void SumOfInt_SourceIsNull_ArgumentNullExceptionThrown()
        {
            IQueryable<int> sourceInt = null;
            Assert.Throws<ArgumentNullException>("source", () => sourceInt.Sum());
            Assert.Throws<ArgumentNullException>("source", () => sourceInt.Sum(x => x));
        }