'Tests a vertical\'s staff lock being set by itself'

def test_vertical_source_for_vertical(self):

    self._update_staff_locks(True, True, True)
    self._verify_staff_lock_source(self.vertical, self.vertical)
    self._update_staff_locks(False, True, True)
    self._verify_staff_lock_source(self.vertical, self.vertical)
    self._update_staff_locks(False, False, True)
    self._verify_staff_lock_source(self.vertical, self.vertical)
