'Override L{globaLogBeginner.beginLoggingTo} so that we can trace the
observers installed in C{self.observers}.'

def setUp(self):

    self.observers = []
    def beginLoggingTo(observers):
        for observer in observers:
            self.observers.append(observer)
            globalLogPublisher.addObserver(observer)
    self.patch(globalLogBeginner, 'beginLoggingTo', beginLoggingTo)
