public void UndoShouldExecuteTheReverseCommand()
{
var command = Substitute.For <ICommand>();
var reverseCommand = Substitute.For <ICommand>();
command.GetReverseCommand().Returns(reverseCommand);
var outline = new Outline();
var co = new CommandOutline(outline);
co.RunCommand(command);
co.Undo();
reverseCommand.Received(1).Do(outline);
}
public void NewCommandShouldClearRedos()
{
var command = Substitute.For <ICommand>();
var reverseCommand = Substitute.For <ICommand>();
var reverseReverseCommand = Substitute.For <ICommand>();
command.GetReverseCommand().Returns(reverseCommand);
reverseCommand.GetReverseCommand().Returns(reverseReverseCommand);
var outline = new Outline();
var co = new CommandOutline(outline);
co.RunCommand(command);
co.Undo();
co.RunCommand(Substitute.For <ICommand>());
co.Redo();
reverseReverseCommand.Received(0).Do(outline);
}