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

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