69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
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"""Pytest fixtures for async tests."""
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import asyncio
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from typing import AsyncGenerator
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import fakeredis.aioredis
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import pytest
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import pytest_asyncio
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from httpx import ASGITransport, AsyncClient
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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import app.cache as cache_module
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from app.database import Base, get_db
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from app.main import app
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@pytest.fixture(scope="session")
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def event_loop():
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"""Create a single event loop for all tests."""
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loop = asyncio.new_event_loop()
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yield loop
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loop.close()
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@pytest_asyncio.fixture
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async def test_engine():
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"""Create a fresh in-memory SQLite engine for each test."""
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engine = create_async_engine("sqlite+aiosqlite:///:memory:", echo=False)
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async with engine.begin() as conn:
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await conn.run_sync(Base.metadata.create_all)
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yield engine
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await engine.dispose()
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@pytest_asyncio.fixture
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async def db_session(test_engine) -> AsyncGenerator[AsyncSession, None]:
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"""Yield a DB session bound to the test engine."""
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session_factory = async_sessionmaker(test_engine, class_=AsyncSession, expire_on_commit=False)
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async with session_factory() as session:
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yield session
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@pytest_asyncio.fixture
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async def fake_redis():
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"""Provide a fakeredis instance and patch the cache module global."""
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fake = fakeredis.aioredis.FakeRedis(decode_responses=True)
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cache_module._cache_client = fake
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yield fake
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cache_module._cache_client = None
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await fake.flushall()
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@pytest_asyncio.fixture
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async def client(test_engine, fake_redis) -> AsyncGenerator[AsyncClient, None]:
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"""Provide an async HTTP client with test DB and fake Redis."""
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session_factory = async_sessionmaker(test_engine, class_=AsyncSession, expire_on_commit=False)
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async def override_get_db() -> AsyncGenerator[AsyncSession, None]:
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async with session_factory() as session:
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yield session
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app.dependency_overrides[get_db] = override_get_db
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transport = ASGITransport(app=app)
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async with AsyncClient(transport=transport, base_url="http://test") as ac:
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yield ac
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app.dependency_overrides.clear()
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