private void UndoCommand(IInputHandler argsHandler)
{
if (_document.CanUndo())
{
_document.Undo();
}
else
{
_out.WriteLine("Can't Undo");
}
}
public void Execute(string commandData, TextWriter textWriter)
{
if (_document.CanUndo())
{
_document.Undo();
}
else
{
textWriter.WriteLine(Constants.IMPOSSIBLE_TO_UNDO);
}
}
public void CanUndo_WithEmptyHistory_ShouldReturnFalse()
{
Assert.IsFalse(_document.CanUndo());
}