public void AddTwo([NotNull] string what1, [NotNull] string what2)
{
var h = new History();
h.Add(what1);
h.Add(what2);
Assert.AreEqual(what2, h.GetNext());
Assert.AreEqual(what1, h.GetNext());
}
public void GetNext()
{
var h = new History();
h.Add("first");
h.Add("second");
h.Add("third");
Assert.AreEqual("third", h.GetNext());
Assert.AreEqual("second", h.GetNext());
Assert.AreEqual("first", h.GetNext());
Assert.AreEqual("third", h.GetNext());
}
public void Reset()
{
var h = new History();
h.Add("first");
h.Add("second");
h.Add("third");
Assert.AreEqual("third", h.GetNext());
Assert.AreEqual("second", h.GetNext());
h.Reset();
Assert.Null(h.GetPrevious());
Assert.AreEqual("third", h.GetNext());
}
public void AddOne([NotNull] string what)
{
var h = new History();
h.Add(what);
Assert.AreEqual(what, h.GetNext());
}