public void TestAppendMedium()
{
MediaList list = new MediaList();
list.AppendMedium("screen");
Assert.AreEqual(1, list.Length);
Assert.AreEqual("screen", list.MediaText);
Assert.AreEqual("screen", list[0]);
list.AppendMedium("all");
Assert.AreEqual(2, list.Length);
Assert.AreEqual("screen,all", list.MediaText);
Assert.AreEqual("screen", list[0]);
Assert.AreEqual("all", list[1]);
list.AppendMedium("screen");
Assert.AreEqual(2, list.Length);
Assert.AreEqual("all,screen", list.MediaText);
Assert.AreEqual("all", list[0]);
Assert.AreEqual("screen", list[1]);
}