def test_try_shared_variation_when_already_share_locked(self):
lock = self.make_lock(random_objid())
with lock_held_in_other_thread(lock.SHARED):
with lock.SHARED:
pass # No exception.
def test_try_shared_variation_when_already_exclusively_locked(self):
lock = self.make_lock(random_objid())
with lock_held_in_other_thread(lock):
self.assertRaises(dblocks.DatabaseLockNotHeld,
lock.TRY.SHARED.__enter__)