def METHOD_NAME(self):
    """ Verify deadline is unchanged by signal when explicitly set. """
    deadline = now() - timedelta(days=7)
    VerificationDeadline.set_deadline(self.course.id, deadline, is_explicit=True)
    _listen_for_course_publish('store', self.course.id)
    actual_deadline = VerificationDeadline.deadline_for_course(self.course.id)
    assert actual_deadline != self.course.end
    assert actual_deadline == deadline