async def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
connectable = AsyncEngine(
engine_from_config(
config.get_section(config.config_ini_section),
prefix="sqlalchemy.",
poolclass=pool.NullPool,
future=True,
))
async with connectable.connect() as connection:
await connection.run_sync(do_run_migrations)
async def test_gc_engine(self, testing_engine):
ReversibleProxy._proxy_objects.clear()
eq_(len(ReversibleProxy._proxy_objects), 0)
async_engine = AsyncEngine(testing.db)
eq_(len(ReversibleProxy._proxy_objects), 1)
del async_engine
eq_(len(ReversibleProxy._proxy_objects), 0)
async def test_gc_conn(self, testing_engine):
ReversibleProxy._proxy_objects.clear()
async_engine = AsyncEngine(testing.db)
eq_(len(ReversibleProxy._proxy_objects), 1)
async with async_engine.connect() as conn:
eq_(len(ReversibleProxy._proxy_objects), 2)
async with conn.begin() as trans:
eq_(len(ReversibleProxy._proxy_objects), 3)
del trans
del conn
eq_(len(ReversibleProxy._proxy_objects), 1)
del async_engine
eq_(len(ReversibleProxy._proxy_objects), 0)