.Net Core 2.1 asp-for with label not working

Using Visual Studio 2017, .Net Core 2.1, Web Site

With this model

public class TestObj{    [DataType(DataType.Text)]    public string str1 { get; set; }    [DataType(DataType.Text)]    public int int1 { get; set; }    public List<TestObj> TestList { get; set; }    public TestObj() { }    public TestObj(string i_str, int i_int)    {        this.str1 = i_str;        this.int1 = i_int;    }}

And this controller:

    [HttpGet]public IActionResult Test(){    TestObj model = new TestObj();    model.TestList = new List<TestObj>();    model.TestList.Add(new TestObj("test1", 1));    model.TestList.Add(new TestObj("test2", 2));    return View(model);}

This as the cshtml:

<form asp-action="Test" asp-controller="Home"><ul>    @for (int i = 0; i < Model.TestList.Count; i++)    {<li><label asp-for="@Model.TestList[i].str1" /></li><li><label asp-for="@Model.TestList[i].int1" /></li><li><input asp-for="@Model.TestList[i].str1" /></li><li><input asp-for="@Model.TestList[i].int1" /></li>    }</ul>

I get the input boxes but not the Labels. I have searched the web and Stack Overflow but can't find out why the labels fail when the inputs work. Any help would be appreciated.