Mock a list of string

public class MyClass
{
    public static List<string> GetStringList()
    {
        List<string> stringList = new List<string>();

        ClassToMock classToMock = new ClassToMock();
        classToMock.FillStringList(stringList);

        return stringList;
    }
}

[Test]
public void GetNewsList()
{
    MockManager.Init();

    Mock classToMock = MockManager.Mock(typeof (ClassToMock));
    classToMock.ExpectCall("FillStringList").Args(GetFilledStringList());
            
    List<string> stringList = MyClass.GetStringList();

    Assert.AreEqual(2, stringList.Count);
    Assert.AreEqual("Mocked one!", stringList[0]);
    Assert.AreEqual("Mocked two!", stringList[1]);
            
    MockManager.Verify();
}

private static List<INews> GetFilledNewsList()
{
    List<string> stringList = new List<string>();
    stringList.Add("Mocked one!");
    stringList.Add("Mocked two!");

    return stringList;
}