public static void AssetThereWasAtleastOneCanExecuteChangedEventAndCommandExecutableStateIs
(this CommandObserver commandObserver, bool executableState)
{
commandObserver.AssetAllSendersWereCorrect();
Assert.AreNotEqual(0, commandObserver.NumberOfEventsRecieved, "No events were recieved");
Assert.AreEqual(executableState, commandObserver.ValueOfCanExecuteOnLatestEvent, "The command is executable");
}
public static CommandObserver GetDelegateCommandObserver(this DelegateCommand command)
{
CommandObserver observer = new CommandObserver();
observer.ValueOfCanExecuteOnLatestEvent = command.CanExecute();
command.CanExecuteChanged += (obj, e) =>
{
if (command == obj)
{
observer.WasTheSendersCorrect.Add(true);
}
observer.ValueOfCanExecuteOnLatestEvent = command.CanExecute();
observer.NumberOfEventsRecieved++;
};
return(observer);
}
public static void AssertTheCommandBecameNonExecutable(this CommandObserver commandObserver)
{
commandObserver.
AssetThereWasAtleastOneCanExecuteChangedEventAndCommandExecutableStateIs(false);
}
public static void AssetAllSendersWereCorrect(this CommandObserver commandObserver)
{
Assert.AreEqual(0, commandObserver.WasTheSendersCorrect.Count(x => false), "There was atleast one sender for this command that not correct");
}
