public void TestCommandHistory()
{
PositiveInt x = new PositiveInt();
CommandHistory test = new CommandHistory();
// test initial state
Assert.IsTrue(!test.CanUndo);
Assert.IsTrue(!test.CanRedo);
Assert.IsTrue(!test.Dirty);
// test adding command
Command cmd = new IncCommand(x);
test.Add(cmd);
cmd.Do();
Assert.IsTrue(x.Value == 1);
Assert.IsTrue(test.CanUndo);
Assert.IsTrue(!test.CanRedo);
Assert.IsTrue(test.Dirty);
test.Undo();
Assert.IsTrue(x.Value == 0);
Assert.IsTrue(!test.CanUndo);
Assert.IsTrue(test.CanRedo);
Assert.IsTrue(!test.Dirty);
test.Redo();
Assert.IsTrue(x.Value == 1);
Assert.IsTrue(test.CanUndo);
Assert.IsTrue(!test.CanRedo);
Assert.IsTrue(test.Dirty);
test.Dirty = false;
Assert.IsTrue(!test.Dirty);
cmd = new IncCommand(x);
test.Add(cmd);
cmd.Do();
Assert.IsTrue(test.Dirty);
test.Undo();
Assert.IsTrue(!test.Dirty);
test.Dirty = true;
Assert.IsTrue(test.Dirty);
}
public void TestCommandHistory()
{
PositiveInt x = new PositiveInt();
CommandHistory test = new CommandHistory();
// test initial state
Assert.IsTrue(!test.CanUndo);
Assert.IsTrue(!test.CanRedo);
Assert.IsTrue(!test.Dirty);
// test adding command
Command cmd = new IncCommand(x);
test.Add(cmd);
cmd.Do();
Assert.IsTrue(x.Value == 1);
Assert.IsTrue(test.CanUndo);
Assert.IsTrue(!test.CanRedo);
Assert.IsTrue(test.Dirty);
test.Undo();
Assert.IsTrue(x.Value == 0);
Assert.IsTrue(!test.CanUndo);
Assert.IsTrue(test.CanRedo);
Assert.IsTrue(!test.Dirty);
test.Redo();
Assert.IsTrue(x.Value == 1);
Assert.IsTrue(test.CanUndo);
Assert.IsTrue(!test.CanRedo);
Assert.IsTrue(test.Dirty);
test.Dirty = false;
Assert.IsTrue(!test.Dirty);
cmd = new IncCommand(x);
test.Add(cmd);
cmd.Do();
Assert.IsTrue(test.Dirty);
test.Undo();
Assert.IsTrue(!test.Dirty);
test.Dirty = true;
Assert.IsTrue(test.Dirty);
}
