Use alembic in tests again?

.github/workflows/python.yml

@@ -27,16 +27,17 @@ jobs:
     services:
       postgres:
         image: postgres:14
-        env:
-          POSTGRES_DB: didier_action
-          POSTGRES_PASSWORD: postgres
         options: >-
           --health-cmd pg_isready
           --health-interval 10s
           --health-timeout 5s
           --health-retries 5
         ports:
-          - 5432:5432
+          - 5433:5432
+        env:
+          POSTGRES_DB: didier_pytest
+          POSTGRES_USER: pytest
+          POSTGRES_PASSWORD: pytest
     steps:
       - uses: actions/checkout@v3
       - name: Setup Python
@@ -54,10 +55,6 @@ jobs:
         run: pip3 install -r requirements.txt -r requirements-dev.txt
       - name: Run Pytest
         run: pytest tests
-        env:
-          DB_TEST_SQLITE: false
-          DB_NAME: didier_action
-          DB_PASSWORD: postgres
   linting:
     needs: [dependencies]
     runs-on: ubuntu-latest

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())

database/engine.py

@@ -6,27 +6,17 @@ from sqlalchemy.orm import sessionmaker
 
 import settings
 
-# Run local tests against SQLite instead of Postgres
-if settings.TESTING and settings.DB_TEST_SQLITE:
-    engine = create_async_engine(
-        URL.create(
-            drivername="sqlite+aiosqlite",
-            database="tests.db",
-        ),
-        connect_args={"check_same_thread": False},
-    )
-else:
-    encoded_password = quote_plus(settings.DB_PASSWORD)
-    engine = create_async_engine(
-        URL.create(
-            drivername="postgresql+asyncpg",
-            username=settings.DB_USERNAME,
-            password=encoded_password,
-            host=settings.DB_HOST,
-            port=settings.DB_PORT,
-            database=settings.DB_NAME,
-        ),
-        pool_pre_ping=True,
-    )
+encoded_password = quote_plus(settings.DB_PASSWORD)
+engine = create_async_engine(
+    URL.create(
+        drivername="postgresql+asyncpg",
+        username=settings.DB_USERNAME,
+        password=encoded_password,
+        host=settings.DB_HOST,
+        port=settings.DB_PORT,
+        database=settings.DB_NAME,
+    ),
+    pool_pre_ping=True,
+)
 
 DBSession = sessionmaker(autocommit=False, autoflush=False, bind=engine, class_=AsyncSession, expire_on_commit=False)

docker-compose.yml

@@ -12,5 +12,15 @@ services:
       - "${DB_PORT:-5432}:${DB_PORT:-5432}"
     volumes:
       - db:/var/lib/postgresql/data
+  db-pytest:
+    image: postgres:14
+    container_name: didier-pytest
+    restart: always
+    environment:
+      - POSTGRES_DB=didier_pytest
+      - POSTGRES_USER=pytest
+      - POSTGRES_PASSWORD=pytest
+    ports:
+      - "5433:5432"
 volumes:
   db:

pyproject.toml

@@ -24,9 +24,10 @@ good-names = ["i", "dt"]
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
 env = [
-    "TESTING = true",
-    "DB_NAME = didier_action",
-    "DB_USERNAME = postgres",
+    "DB_NAME = didier_pytest",
+    "DB_USERNAME = pytest",
+    "DB_PASSWORD = pytest",
     "DB_HOST = localhost",
+    "DB_PORT = 5433",
     "DISC_TOKEN = token"
 ]

settings.py

@@ -9,7 +9,6 @@ env.read_env()
 """General config"""
 SANDBOX: bool = env.bool("SANDBOX", True)
 LOGFILE: str = env.str("LOGFILE", "didier.log")
-TESTING: bool = env.bool("TESTING", False)
 
 """Database"""
 DB_NAME: str = env.str("DB_NAME", "didier")
@@ -17,7 +16,6 @@ DB_USERNAME: str = env.str("DB_USERNAME", "postgres")
 DB_PASSWORD: str = env.str("DB_PASSWORD", "")
 DB_HOST: str = env.str("DB_HOST", "localhost")
 DB_PORT: int = env.int("DB_PORT", "5432")
-DB_TEST_SQLITE: bool = env.bool("DB_TEST_SQLITE", True)
 
 """Discord"""
 DISCORD_TOKEN: str = env.str("DISC_TOKEN")

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