System.Linq.Tests.AverageTests.MultipleLongFromSelector C# (CSharp) Method

        public void MultipleLongFromSelector()
        {
            var source = new []
            {
                new { name = "Tim", num = 40L },
                new { name = "John", num = 50L },
                new { name = "Bob", num = 60L }
            };
            double expected = 50;

            Assert.Equal(expected, source.AsQueryable().Average(e => e.num));
        }