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import testbase
import operator
from sqlalchemy import *
from sqlalchemy.orm import *
from testlib import *
from testlib.fixtures import *
from query import QueryTest
class DynamicTest(FixtureTest):
keep_mappers = False
refresh_data = True
def test_basic(self):
mapper(User, users, properties={
'addresses':dynamic_loader(mapper(Address, addresses))
})
sess = create_session()
q = sess.query(User)
print q.filter(User.id==7).all()
u = q.filter(User.id==7).first()
print list(u.addresses)
assert [User(id=7, addresses=[Address(id=1, email_address='jack@bean.com')])] == q.filter(User.id==7).all()
assert fixtures.user_address_result == q.all()
def test_count(self):
mapper(User, users, properties={
'addresses':dynamic_loader(mapper(Address, addresses))
})
sess = create_session()
u = sess.query(User).first()
assert u.addresses.count() == 1, u.addresses.count()
def test_backref(self):
mapper(Address, addresses, properties={
'user':relation(User, backref=backref('addresses', lazy='dynamic'))
})
mapper(User, users)
sess = create_session()
ad = sess.query(Address).get(1)
def go():
ad.user = None
self.assert_sql_count(testbase.db, go, 1)
sess.flush()
u = sess.query(User).get(7)
assert ad not in u.addresses
def test_no_count(self):
mapper(User, users, properties={
'addresses':dynamic_loader(mapper(Address, addresses))
})
sess = create_session()
q = sess.query(User)
# dynamic collection cannot implement __len__() (at least one that returns a live database
# result), else additional count() queries are issued when evaluating in a list context
def go():
assert [User(id=7, addresses=[Address(id=1, email_address='jack@bean.com')])] == q.filter(User.id==7).all()
self.assert_sql_count(testbase.db, go, 2)
def test_m2m(self):
mapper(Order, orders, properties={
'items':relation(Item, secondary=order_items, lazy="dynamic", backref=backref('orders', lazy="dynamic"))
})
mapper(Item, items)
sess = create_session()
o1 = Order(id=15, description="order 10")
i1 = Item(id=10, description="item 8")
o1.items.append(i1)
sess.save(o1)
sess.flush()
assert o1 in i1.orders.all()
assert i1 in o1.items.all()
class FlushTest(FixtureTest):
def test_basic(self):
class Fixture(Base):
pass
mapper(User, users, properties={
'addresses':dynamic_loader(mapper(Address, addresses))
})
sess = create_session()
u1 = User(name='jack')
u2 = User(name='ed')
u2.addresses.append(Address(email_address='foo@bar.com'))
u1.addresses.append(Address(email_address='lala@hoho.com'))
sess.save(u1)
sess.save(u2)
sess.flush()
sess.clear()
# test the test fixture a little bit
assert User(name='jack', addresses=[Address(email_address='wrong')]) != sess.query(User).first()
assert User(name='jack', addresses=[Address(email_address='lala@hoho.com')]) == sess.query(User).first()
assert [
User(name='jack', addresses=[Address(email_address='lala@hoho.com')]),
User(name='ed', addresses=[Address(email_address='foo@bar.com')])
] == sess.query(User).all()
@testing.fails_on('maxdb')
def test_delete(self):
mapper(User, users, properties={
'addresses':dynamic_loader(mapper(Address, addresses), backref='user')
})
sess = create_session(autoflush=True)
u = User(name='ed')
u.addresses.append(Address(email_address='a'))
u.addresses.append(Address(email_address='b'))
u.addresses.append(Address(email_address='c'))
u.addresses.append(Address(email_address='d'))
u.addresses.append(Address(email_address='e'))
u.addresses.append(Address(email_address='f'))
sess.save(u)
assert Address(email_address='c') == u.addresses[2]
sess.delete(u.addresses[2])
sess.delete(u.addresses[4])
sess.delete(u.addresses[3])
assert [Address(email_address='a'), Address(email_address='b'), Address(email_address='d')] == list(u.addresses)
sess.delete(u)
# u.addresses relation will have to force the load
# of all addresses so that they can be updated
sess.flush()
sess.close()
assert testbase.db.scalar(addresses.count(addresses.c.user_id != None)) ==0
@testing.fails_on('maxdb')
def test_remove_orphans(self):
mapper(User, users, properties={
'addresses':dynamic_loader(mapper(Address, addresses), cascade="all, delete-orphan", backref='user')
})
sess = create_session(autoflush=True)
u = User(name='ed')
u.addresses.append(Address(email_address='a'))
u.addresses.append(Address(email_address='b'))
u.addresses.append(Address(email_address='c'))
u.addresses.append(Address(email_address='d'))
u.addresses.append(Address(email_address='e'))
u.addresses.append(Address(email_address='f'))
sess.save(u)
assert [Address(email_address='a'), Address(email_address='b'), Address(email_address='c'),
Address(email_address='d'), Address(email_address='e'), Address(email_address='f')] == sess.query(Address).all()
assert Address(email_address='c') == u.addresses[2]
try:
del u.addresses[3]
assert False
except TypeError, e:
assert "doesn't support item deletion" in str(e), str(e)
for a in u.addresses.filter(Address.email_address.in_(['c', 'e', 'f'])):
u.addresses.remove(a)
assert [Address(email_address='a'), Address(email_address='b'), Address(email_address='d')] == list(u.addresses)
assert [Address(email_address='a'), Address(email_address='b'), Address(email_address='d')] == sess.query(Address).all()
sess.delete(u)
sess.close()
def create_backref_test(autoflush, saveuser):
def test_backref(self):
mapper(User, users, properties={
'addresses':dynamic_loader(mapper(Address, addresses), backref='user')
})
sess = create_session(autoflush=autoflush)
u = User(name='buffy')
a = Address(email_address='foo@bar.com')
a.user = u
if saveuser:
sess.save(u)
else:
sess.save(a)
if not autoflush:
sess.flush()
assert u in sess
assert a in sess
self.assert_(list(u.addresses) == [a])
a.user = None
if not autoflush:
self.assert_(list(u.addresses) == [a])
if not autoflush:
sess.flush()
self.assert_(list(u.addresses) == [])
test_backref.__name__ = "test%s%s" % (
(autoflush and "_autoflush" or ""),
(saveuser and "_saveuser" or "_savead"),
)
setattr(FlushTest, test_backref.__name__, test_backref)
for autoflush in (False, True):
for saveuser in (False, True):
create_backref_test(autoflush, saveuser)
if __name__ == '__main__':
testbase.main()
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