Initial extraction from monorepo

tests/conftest.py

@@ -0,0 +1,36 @@
+"""Shared pytest fixtures.
+
+Tests run against an in-memory SQLite DB created via the SQLAlchemy ORM
+metadata directly — fast, deterministic, and avoids running Alembic
+end-to-end on every test (the migration is exercised separately).
+"""
+from collections.abc import AsyncIterator
+
+import pytest_asyncio
+from sqlalchemy.ext.asyncio import (
+    AsyncEngine,
+    AsyncSession,
+    async_sessionmaker,
+    create_async_engine,
+)
+
+from fire_planner.db import SCHEMA_NAME, Base
+
+
+@pytest_asyncio.fixture
+async def engine() -> AsyncIterator[AsyncEngine]:
+    eng = create_async_engine("sqlite+aiosqlite:///:memory:")
+    async with eng.begin() as conn:
+        # SQLite has no schema concept — attach an in-memory DB under the
+        # `fire_planner` name so `__table_args__ = {"schema": ...}` resolves.
+        await conn.exec_driver_sql(f"ATTACH DATABASE ':memory:' AS {SCHEMA_NAME}")
+        await conn.run_sync(Base.metadata.create_all)
+    yield eng
+    await eng.dispose()
+
+
+@pytest_asyncio.fixture
+async def session(engine: AsyncEngine) -> AsyncIterator[AsyncSession]:
+    factory = async_sessionmaker(engine, expire_on_commit=False)
+    async with factory() as sess:
+        yield sess