import pytest
from apollo_main_db.base import Base

from apollo_notifications.main_db import engine, session_scope
from tests.factories import factories


def register_factories(session):
    """Pass session to factory model"""
    for factory in factories:
        factory._meta.sqlalchemy_session = session


@pytest.yield_fixture
def db_session():
    """Returns an sqlalchemy session, and after the test tears down."""
    Base.metadata.create_all(engine)
    with session_scope() as session:
        register_factories(session)
        yield session
    Base.metadata.drop_all(engine)