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|
from sqlalchemy.testing import assert_raises_message
from sqlalchemy import MetaData, Integer, ForeignKey
from sqlalchemy.testing.schema import Table
from sqlalchemy.testing.schema import Column
from sqlalchemy.orm import mapper, create_session
import sqlalchemy as sa
from sqlalchemy import testing
from sqlalchemy.testing import fixtures, eq_, engines, is_
from sqlalchemy.orm import relationship, Session, backref, sessionmaker
from test.orm import _fixtures
from sqlalchemy.testing.mock import Mock
class BindIntegrationTest(_fixtures.FixtureTest):
run_inserts = None
def test_mapped_binds(self):
Address, addresses, users, User = (self.classes.Address,
self.tables.addresses,
self.tables.users,
self.classes.User)
# ensure tables are unbound
m2 = sa.MetaData()
users_unbound = users.tometadata(m2)
addresses_unbound = addresses.tometadata(m2)
mapper(Address, addresses_unbound)
mapper(User, users_unbound, properties={
'addresses': relationship(Address,
backref=backref("user", cascade="all"),
cascade="all")})
sess = Session(binds={User: self.metadata.bind,
Address: self.metadata.bind})
u1 = User(id=1, name='ed')
sess.add(u1)
eq_(sess.query(User).filter(User.id == 1).all(),
[User(id=1, name='ed')])
# test expression binding
sess.execute(users_unbound.insert(), params=dict(id=2,
name='jack'))
eq_(sess.execute(users_unbound.select(users_unbound.c.id
== 2)).fetchall(), [(2, 'jack')])
eq_(sess.execute(users_unbound.select(User.id == 2)).fetchall(),
[(2, 'jack')])
sess.execute(users_unbound.delete())
eq_(sess.execute(users_unbound.select()).fetchall(), [])
sess.close()
def test_table_binds(self):
Address, addresses, users, User = (self.classes.Address,
self.tables.addresses,
self.tables.users,
self.classes.User)
# ensure tables are unbound
m2 = sa.MetaData()
users_unbound = users.tometadata(m2)
addresses_unbound = addresses.tometadata(m2)
mapper(Address, addresses_unbound)
mapper(User, users_unbound, properties={
'addresses': relationship(Address,
backref=backref("user", cascade="all"),
cascade="all")})
Session = sessionmaker(binds={users_unbound: self.metadata.bind,
addresses_unbound: self.metadata.bind})
sess = Session()
u1 = User(id=1, name='ed')
sess.add(u1)
eq_(sess.query(User).filter(User.id == 1).all(),
[User(id=1, name='ed')])
sess.execute(users_unbound.insert(), params=dict(id=2, name='jack'))
eq_(sess.execute(users_unbound.select(users_unbound.c.id
== 2)).fetchall(), [(2, 'jack')])
eq_(sess.execute(users_unbound.select(User.id == 2)).fetchall(),
[(2, 'jack')])
sess.execute(users_unbound.delete())
eq_(sess.execute(users_unbound.select()).fetchall(), [])
sess.close()
def test_bind_from_metadata(self):
users, User = self.tables.users, self.classes.User
mapper(User, users)
session = create_session()
session.execute(users.insert(), dict(name='Johnny'))
assert len(session.query(User).filter_by(name='Johnny').all()) == 1
session.execute(users.delete())
assert len(session.query(User).filter_by(name='Johnny').all()) == 0
session.close()
def test_bind_arguments(self):
users, Address, addresses, User = (self.tables.users,
self.classes.Address,
self.tables.addresses,
self.classes.User)
mapper(User, users)
mapper(Address, addresses)
e1 = engines.testing_engine()
e2 = engines.testing_engine()
e3 = engines.testing_engine()
sess = Session(e3)
sess.bind_mapper(User, e1)
sess.bind_mapper(Address, e2)
assert sess.connection().engine is e3
assert sess.connection(bind=e1).engine is e1
assert sess.connection(mapper=Address, bind=e1).engine is e1
assert sess.connection(mapper=Address).engine is e2
assert sess.connection(clause=addresses.select()).engine is e2
assert sess.connection(mapper=User,
clause=addresses.select()).engine is e1
assert sess.connection(mapper=User,
clause=addresses.select(),
bind=e2).engine is e2
sess.close()
@engines.close_open_connections
def test_bound_connection(self):
users, User = self.tables.users, self.classes.User
mapper(User, users)
c = testing.db.connect()
sess = create_session(bind=c)
sess.begin()
transaction = sess.transaction
u = User(name='u1')
sess.add(u)
sess.flush()
assert transaction._connection_for_bind(testing.db, None) \
is transaction._connection_for_bind(c, None) is c
assert_raises_message(sa.exc.InvalidRequestError,
'Session already has a Connection '
'associated',
transaction._connection_for_bind,
testing.db.connect(), None)
transaction.rollback()
assert len(sess.query(User).all()) == 0
sess.close()
def test_bound_connection_transactional(self):
User, users = self.classes.User, self.tables.users
mapper(User, users)
c = testing.db.connect()
sess = create_session(bind=c, autocommit=False)
u = User(name='u1')
sess.add(u)
sess.flush()
sess.close()
assert not c.in_transaction()
assert c.scalar("select count(1) from users") == 0
sess = create_session(bind=c, autocommit=False)
u = User(name='u2')
sess.add(u)
sess.flush()
sess.commit()
assert not c.in_transaction()
assert c.scalar("select count(1) from users") == 1
c.execute("delete from users")
assert c.scalar("select count(1) from users") == 0
c = testing.db.connect()
trans = c.begin()
sess = create_session(bind=c, autocommit=True)
u = User(name='u3')
sess.add(u)
sess.flush()
assert c.in_transaction()
trans.commit()
assert not c.in_transaction()
assert c.scalar("select count(1) from users") == 1
class SessionBindTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table('test_table', metadata,
Column('id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('data', Integer))
@classmethod
def setup_classes(cls):
class Foo(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
test_table, Foo = cls.tables.test_table, cls.classes.Foo
meta = MetaData()
test_table.tometadata(meta)
assert meta.tables['test_table'].bind is None
mapper(Foo, meta.tables['test_table'])
def test_session_bind(self):
Foo = self.classes.Foo
engine = self.metadata.bind
for bind in (engine, engine.connect()):
try:
sess = create_session(bind=bind)
assert sess.bind is bind
f = Foo()
sess.add(f)
sess.flush()
assert sess.query(Foo).get(f.id) is f
finally:
if hasattr(bind, 'close'):
bind.close()
def test_session_unbound(self):
Foo = self.classes.Foo
sess = create_session()
sess.add(Foo())
assert_raises_message(
sa.exc.UnboundExecutionError,
('Could not locate a bind configured on Mapper|Foo|test_table '
'or this Session'),
sess.flush)
class GetBindTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
'base_table', metadata,
Column('id', Integer, primary_key=True)
)
Table(
'w_mixin_table', metadata,
Column('id', Integer, primary_key=True)
)
Table(
'joined_sub_table', metadata,
Column('id', ForeignKey('base_table.id'), primary_key=True)
)
Table(
'concrete_sub_table', metadata,
Column('id', Integer, primary_key=True)
)
@classmethod
def setup_classes(cls):
class MixinOne(cls.Basic):
pass
class BaseClass(cls.Basic):
pass
class ClassWMixin(MixinOne, cls.Basic):
pass
class JoinedSubClass(BaseClass):
pass
class ConcreteSubClass(BaseClass):
pass
@classmethod
def setup_mappers(cls):
mapper(cls.classes.ClassWMixin, cls.tables.w_mixin_table)
mapper(cls.classes.BaseClass, cls.tables.base_table)
mapper(
cls.classes.JoinedSubClass,
cls.tables.joined_sub_table, inherits=cls.classes.BaseClass)
mapper(
cls.classes.ConcreteSubClass,
cls.tables.concrete_sub_table, inherits=cls.classes.BaseClass,
concrete=True)
def _fixture(self, binds):
return Session(binds=binds)
def test_fallback_table_metadata(self):
session = self._fixture({})
is_(
session.get_bind(self.classes.BaseClass),
testing.db
)
def test_bind_base_table_base_class(self):
base_class_bind = Mock()
session = self._fixture({
self.tables.base_table: base_class_bind
})
is_(
session.get_bind(self.classes.BaseClass),
base_class_bind
)
def test_bind_base_table_joined_sub_class(self):
base_class_bind = Mock()
session = self._fixture({
self.tables.base_table: base_class_bind
})
is_(
session.get_bind(self.classes.BaseClass),
base_class_bind
)
is_(
session.get_bind(self.classes.JoinedSubClass),
base_class_bind
)
def test_bind_joined_sub_table_joined_sub_class(self):
base_class_bind = Mock(name='base')
joined_class_bind = Mock(name='joined')
session = self._fixture({
self.tables.base_table: base_class_bind,
self.tables.joined_sub_table: joined_class_bind
})
is_(
session.get_bind(self.classes.BaseClass),
base_class_bind
)
# joined table inheritance has to query based on the base
# table, so this is what we expect
is_(
session.get_bind(self.classes.JoinedSubClass),
base_class_bind
)
def test_bind_base_table_concrete_sub_class(self):
base_class_bind = Mock()
session = self._fixture({
self.tables.base_table: base_class_bind
})
is_(
session.get_bind(self.classes.ConcreteSubClass),
testing.db
)
def test_bind_sub_table_concrete_sub_class(self):
base_class_bind = Mock(name='base')
concrete_sub_bind = Mock(name='concrete')
session = self._fixture({
self.tables.base_table: base_class_bind,
self.tables.concrete_sub_table: concrete_sub_bind
})
is_(
session.get_bind(self.classes.BaseClass),
base_class_bind
)
is_(
session.get_bind(self.classes.ConcreteSubClass),
concrete_sub_bind
)
def test_bind_base_class_base_class(self):
base_class_bind = Mock()
session = self._fixture({
self.classes.BaseClass: base_class_bind
})
is_(
session.get_bind(self.classes.BaseClass),
base_class_bind
)
def test_bind_mixin_class_simple_class(self):
base_class_bind = Mock()
session = self._fixture({
self.classes.MixinOne: base_class_bind
})
is_(
session.get_bind(self.classes.ClassWMixin),
base_class_bind
)
def test_bind_base_class_joined_sub_class(self):
base_class_bind = Mock()
session = self._fixture({
self.classes.BaseClass: base_class_bind
})
is_(
session.get_bind(self.classes.JoinedSubClass),
base_class_bind
)
def test_bind_joined_sub_class_joined_sub_class(self):
base_class_bind = Mock(name='base')
joined_class_bind = Mock(name='joined')
session = self._fixture({
self.classes.BaseClass: base_class_bind,
self.classes.JoinedSubClass: joined_class_bind
})
is_(
session.get_bind(self.classes.BaseClass),
base_class_bind
)
is_(
session.get_bind(self.classes.JoinedSubClass),
joined_class_bind
)
def test_bind_base_class_concrete_sub_class(self):
base_class_bind = Mock()
session = self._fixture({
self.classes.BaseClass: base_class_bind
})
is_(
session.get_bind(self.classes.ConcreteSubClass),
base_class_bind
)
def test_bind_sub_class_concrete_sub_class(self):
base_class_bind = Mock(name='base')
concrete_sub_bind = Mock(name='concrete')
session = self._fixture({
self.classes.BaseClass: base_class_bind,
self.classes.ConcreteSubClass: concrete_sub_bind
})
is_(
session.get_bind(self.classes.BaseClass),
base_class_bind
)
is_(
session.get_bind(self.classes.ConcreteSubClass),
concrete_sub_bind
)
|
