System.Linq.Tests.SelectTests.Select_SourceIsAnIList_Count C# (CSharp) Метод

        public void Select_SourceIsAnIList_Count()
        {
            var souce = new List<int> { 1, 2, 3, 4 }.AsReadOnly();
            Assert.Equal(souce.Count, souce.Select(i => i * 2).Count());
        }