public void SequenceOf2Areas()
{
var area1 = new UndoRedoArea("area1");
var area2 = new UndoRedoArea("area2");
var i1 = new UndoRedo<int>(0);
var i2 = new UndoRedo<int>(0);
using (area1.Start("command1"))
{
i1.Value = 1;
area1.Commit();
}
using (area2.Start("command2"))
{
i2.Value = 2;
area2.Commit();
}
Assert.AreEqual(1, i1.Value, "value from area1 is wrong");
Assert.AreEqual(2, i2.Value, "value from area2 is wrong");
area1.Undo();
area2.Undo();
Assert.AreEqual(0, i1.Value, "value from area1 is wrong");
Assert.AreEqual(0, i2.Value, "value from area2 is wrong");
area1.Redo();
area2.Redo();
Assert.AreEqual(1, i1.Value, "value from area1 is wrong");
Assert.AreEqual(2, i2.Value, "value from area2 is wrong");
}
public void WrongUndo()
{
var area1 = new UndoRedoArea("area1");
var area2 = new UndoRedoArea("area2");
var i = new UndoRedo<int>(0);
using (area1.Start("command1"))
{
i.Value = 1;
area1.Commit();
}
using (area2.Start("command2"))
{
area1.Undo();
}
}