def test_list_assignment(self):
sess = create_session()
u = User(name='jack', orders=[Order(description='someorder'), Order(description='someotherorder')])
sess.save(u)
sess.flush()
sess.clear()
u = sess.query(User).get(u.id)
self.assertEquals(u, User(name='jack', orders=[Order(description='someorder'), Order(description='someotherorder')]))
u.orders=[Order(description="order 3"), Order(description="order 4")]
sess.flush()
sess.clear()
u = sess.query(User).get(u.id)
self.assertEquals(u, User(name='jack', orders=[Order(description="order 3"), Order(description="order 4")]))
self.assertEquals(sess.query(Order).all(), [Order(description="order 3"), Order(description="order 4")])
o5 = Order(description="order 5")
sess.save(o5)
try:
sess.flush()
assert False
except exceptions.FlushError, e:
assert "is an orphan" in str(e)
def test_pending_expunge(self):
sess = create_session()
someuser = User(name='someuser')
sess.save(someuser)
sess.flush()
someuser.pref = p1 = Pref(data='somepref')
assert p1 in sess
someuser.pref = Pref(data='someotherpref')
assert p1 not in sess
sess.flush()
self.assertEquals(sess.query(Pref).with_parent(someuser).all(), [Pref(data="someotherpref")])
def test_collection_orphans(self):
sess = create_session()
u = User(name='jack', orders=[Order(description='someorder'), Order(description='someotherorder')])
sess.save(u)
sess.flush()
assert users.count().scalar() == 1
assert orders.count().scalar() == 2
u.orders[:] = []
sess.flush()
assert users.count().scalar() == 1
assert orders.count().scalar() == 0
