public void TestStateChanged()
{
var provider = new UndoRedoProvider4Test();
var counter = 0;
provider.StateChanged += (sender, e) => counter++;
Assert.AreEqual(0, counter);
provider.AddUndoActionExposed(string.Empty, () => { }, () => { });
Assert.AreEqual(1, counter);
provider.Undo();
Assert.AreEqual(2, counter);
provider.Redo();
Assert.AreEqual(3, counter);
using (provider.BeginMultiActionsUndoRedoStep(string.Empty))
{
provider.AddUndoActionExposed(string.Empty, () => { }, () => { });
Assert.AreEqual(3, counter);
provider.AddUndoActionExposed(string.Empty, () => { }, () => { });
Assert.AreEqual(3, counter);
}
Assert.AreEqual(4, counter);
using (provider.SuppressUndoRegistration())
{
provider.AddUndoActionExposed(string.Empty, () => { }, () => { });
}
Assert.AreEqual(4, counter);
provider.ClearCache();
Assert.AreEqual(5, counter);
}
public void TestSuppressUndoRedo()
{
var provider = new UndoRedoProvider4Test();
provider.AddUndoActionExposed("Aaa", () => { }, () => { });
Assert.AreEqual("Aaa", provider.UndoDescription);
using (provider.SuppressUndoRegistration())
{
provider.AddUndoActionExposed("Bbb", () => { }, () => { });
Assert.AreEqual("Aaa", provider.UndoDescription);
}
provider.AddUndoActionExposed("Bbb", () => { }, () => { });
Assert.AreEqual("Bbb", provider.UndoDescription);
}