public void ReregisterAndExecuteCommand()
{
// Fetch the MainCommand, register the MainCommandTestCommand2 to handle 'MainCommandTest2' notes
IMainCommand mainCommand = MainCommand.Instance;
int name = int.MinValue + Thread.CurrentThread.ManagedThreadId;
mainCommand.RegisterCommand(name, typeof(MainCommandTestCommand2));
// Remove the Command from the MainCommand
mainCommand.RemoveCommand(name);
// Re-register the Command with the MainCommand
mainCommand.RegisterCommand(name, typeof(MainCommandTestCommand2));
// Create a 'MainCommandTest2' note
MainCommandTestVO vo = new MainCommandTestVO(12);
Notification note = new Notification(name, vo);
// retrieve a reference to the MainController.
IMainController mainController = MainController.Instance;
// send the Notification
mainController.NotifyObservers(note);
// test assertions
// if the command is executed once the value will be 24
Assert.IsTrue(vo.result == 24, "Expecting vo.result == 24");
// Prove that accumulation works in the VO by sending the notification again
mainController.NotifyObservers(note);
// if the command is executed twice the value will be 48
Assert.IsTrue(vo.result == 48, "Expecting vo.result == 48");
}
public void RegisterAndRemoveCommand()
{
// Create the MainCommand, register the MainCommandTestCommand to handle 'MainCommandTest' notes
IMainCommand mainCommand = MainCommand.Instance;
int name = int.MinValue + Thread.CurrentThread.ManagedThreadId;
mainCommand.RegisterCommand(name, typeof(MainCommandTestCommand));
// Create a 'MainCommandTest' note
MainCommandTestVO vo = new MainCommandTestVO(12);
INotification note = new Notification(name, vo);
// Tell the MainCommand to execute the Command associated with the note
// the MainCommandTestCommand invoked will multiply the vo.input value
// by 2 and set the result on vo.result
mainCommand.ExecuteCommand(note);
// test assertions
Assert.IsTrue(vo.result == 24, "Expecting vo.result == 24");
// Reset result
vo.result = 0;
// Remove the Command from the MainCommand
mainCommand.RemoveCommand(name);
// Tell the MainCommand to execute the Command associated with the
// note. This time, it should not be registered, and our vo result
// will not change
mainCommand.ExecuteCommand(note);
// test assertions
Assert.IsTrue(vo.result == 0, "Expecting vo.result == 0");
}
