using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var list1 = new List<string>() { "Blah" };

        var areAllItemsTestExample1 = list1.All(s => s == "Test");

        Console.WriteLine(areAllItemsTestExample1);

        var list2 = new List<string>() { "Test" };

        var areAllItemsTestExample2 = list2.All(s => s == "Test");

        Console.WriteLine(areAllItemsTestExample2);

        var list3 = Enumerable.Empty<string>();

        var areAllItemsTestExample3 = list3.All(s => s == "Test");

        Console.WriteLine(areAllItemsTestExample3);

    }

}