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"""test sessionmaker, originally for #7656"""
from sqlalchemy import create_engine
from sqlalchemy import Engine
from sqlalchemy.ext.asyncio import async_scoped_session
from sqlalchemy.ext.asyncio import async_sessionmaker
from sqlalchemy.ext.asyncio import AsyncEngine
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy.ext.asyncio import create_async_engine
from sqlalchemy.orm import QueryPropertyDescriptor
from sqlalchemy.orm import scoped_session
from sqlalchemy.orm import Session
from sqlalchemy.orm import sessionmaker
async_engine = create_async_engine("...")
class MyAsyncSession(AsyncSession):
pass
def async_session_factory(
engine: AsyncEngine,
) -> async_sessionmaker[MyAsyncSession]:
return async_sessionmaker(engine, class_=MyAsyncSession)
def async_scoped_session_factory(
engine: AsyncEngine,
) -> async_scoped_session[MyAsyncSession]:
return async_scoped_session(
async_sessionmaker(engine, class_=MyAsyncSession),
scopefunc=lambda: None,
)
async def async_main() -> None:
fac = async_session_factory(async_engine)
async with fac() as sess:
# EXPECTED_TYPE: MyAsyncSession
reveal_type(sess)
async with fac.begin() as sess:
# EXPECTED_TYPE: MyAsyncSession
reveal_type(sess)
scoped_fac = async_scoped_session_factory(async_engine)
sess = scoped_fac()
# EXPECTED_TYPE: MyAsyncSession
reveal_type(sess)
engine = create_engine("...")
class MySession(Session):
pass
def session_factory(
engine: Engine,
) -> sessionmaker[MySession]:
return sessionmaker(engine, class_=MySession)
def scoped_session_factory(engine: Engine) -> scoped_session[MySession]:
return scoped_session(sessionmaker(engine, class_=MySession))
def main() -> None:
fac = session_factory(engine)
with fac() as sess:
# EXPECTED_TYPE: MySession
reveal_type(sess)
with fac.begin() as sess:
# EXPECTED_TYPE: MySession
reveal_type(sess)
scoped_fac = scoped_session_factory(engine)
sess = scoped_fac()
# EXPECTED_TYPE: MySession
reveal_type(sess)
def test_8837_sync() -> None:
sm = sessionmaker()
# EXPECTED_TYPE: sessionmaker[Session]
reveal_type(sm)
session = sm()
# EXPECTED_TYPE: Session
reveal_type(session)
def test_8837_async() -> None:
as_ = async_sessionmaker()
# EXPECTED_TYPE: async_sessionmaker[AsyncSession]
reveal_type(as_)
async_session = as_()
# EXPECTED_TYPE: AsyncSession
reveal_type(async_session)
# test #9338
ss_9338 = scoped_session_factory(engine)
# EXPECTED_TYPE: QueryPropertyDescriptor
reveal_type(ss_9338.query_property())
qp: QueryPropertyDescriptor = ss_9338.query_property()
class Foo:
query = qp
# EXPECTED_TYPE: Query[Foo]
reveal_type(Foo.query)
# EXPECTED_TYPE: list[Foo]
reveal_type(Foo.query.all())
class Bar:
query: QueryPropertyDescriptor = ss_9338.query_property()
# EXPECTED_TYPE: Query[Bar]
reveal_type(Bar.query)
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