public void Test_Positive()
{
var controller = new ZController();
var t = controller.Get(30);
Assert.AreEqual(15, t.ElementAt(0));
Assert.AreEqual(30, t.ElementAt(1));
}
public void Test_Negative()
{
var controller = new ZController();
var t = controller.Get(-2);
Assert.AreEqual(1, t.Count());
Assert.AreEqual(15, t.ElementAt(0));
}