Use alembic in tests again?

alembic/env.py

@@ -68,4 +68,10 @@ async def run_migrations_online() -> None:
 if context.is_offline_mode():
     run_migrations_offline()
 else:
-    asyncio.run(run_migrations_online())
+    # Wonky way to use the Pytest event loop instead of another one
+    try:
+        loop = asyncio.get_running_loop()
+        if loop and loop.is_running():
+            loop.create_task(run_migrations_online())
+    except RuntimeError:
+        asyncio.run(run_migrations_online())

tests/conftest.py

@@ -5,6 +5,7 @@ from unittest.mock import MagicMock
 import pytest
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from alembic import config, command
 from database.engine import engine
 from database.models import Base
 from didier import Didier
@@ -20,8 +21,10 @@ def event_loop() -> Generator:
 @pytest.fixture(scope="session")
 async def tables(event_loop):
     """Initialize a database before the tests, and then tear it down again"""
-    async with engine.begin() as connection:
-        await connection.run_sync(Base.metadata.create_all)
+    alembic_config: config.Config = config.Config("alembic.ini")
+    command.upgrade(alembic_config, "head")
+    yield
+    command.downgrade(alembic_config, "base")
 
 
 @pytest.fixture