我认为下面的示例是一个非常常见的用例:
- 一次创建到数据库的连接,
- 传递此连接以测试哪些插入数据
- 将连接传递给验证数据的测试。
改变@pytest.fixture(scope="module")
原因的范围ScopeMismatch: You tried to access the 'function' scoped fixture 'event_loop' with a 'module' scoped request object, involved factories
。
此外,test_insert
andtest_find
协程不需要 event_loop 参数,因为通过传递连接已经可以访问循环。
任何想法如何解决这两个问题?
import pytest
@pytest.fixture(scope="function") # <-- want this to be scope="module"; run once!
@pytest.mark.asyncio
async def connection(event_loop):
""" Expensive function; want to do in the module scope. Only this function needs `event_loop`!
"""
conn await = make_connection(event_loop)
return conn
@pytest.mark.dependency()
@pytest.mark.asyncio
async def test_insert(connection, event_loop): # <-- does not need event_loop arg
""" Test insert into database.
NB does not need event_loop argument; just the connection.
"""
_id = 0
success = await connection.insert(_id, "data")
assert success == True
@pytest.mark.dependency(depends=['test_insert'])
@pytest.mark.asyncio
async def test_find(connection, event_loop): # <-- does not need event_loop arg
""" Test database find.
NB does not need event_loop argument; just the connection.
"""
_id = 0
data = await connection.find(_id)
assert data == "data"