AssertElementOrder.cs

[TestMethod]
public void Select_and_addrange_should_maintain_element_order()
{
    var array = new[] {"3", "5", "1", "9", "2"};

    var list = new List<int>();
    list.AddRange(array.Select(s => int.Parse(s)));

    Assert.AreEqual(3, list[0]);
    Assert.AreEqual(5, list[1]);
    Assert.AreEqual(1, list[2]);
    Assert.AreEqual(9, list[3]);
    Assert.AreEqual(2, list[4]);
}