public void CanRedoWhenACommandHasBeenUndone()
{
var commandStack = new CommandStack();
var mockCommand = new Mock<ICommand>();
commandStack.Execute(mockCommand.Object);
commandStack.Undo();
Assert.IsTrue(commandStack.CanRedo());
}
public void CanNotRedoWhenACommandIsUndoneThenAnotherCommandIsExecuted()
{
var commandStack = new CommandStack();
var mockCommand = new Mock<ICommand>();
var mockCommand2 = new Mock<ICommand>();
commandStack.Execute(mockCommand.Object);
commandStack.Undo();
commandStack.Execute(mockCommand2.Object);
Assert.IsFalse(commandStack.CanRedo());
}
public void CanNotRedoWhenNoCommandsHaveBeenExecuted()
{
var commandStack = new CommandStack();
Assert.IsFalse(commandStack.CanRedo());
}