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

        public void SumOfDouble_SourceIsNull_ArgumentNullExceptionThrown()
        {
            IQueryable<double> sourceDouble = null;
            Assert.Throws<ArgumentNullException>("source", () => sourceDouble.Sum());
            Assert.Throws<ArgumentNullException>("source", () => sourceDouble.Sum(x => x));
        }