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未获取URL的aiohttp单元测试

aiohttp python-unittest python

buhtz · 技术社区 · 4 年前

我玩得有点自大 example in the aiohttp docs about unitttesting 了解示例中发生了什么,以及它是如何工作的。我想我还是我理解一些事情。

我需要“模拟”从URL下载xml或html文件。但示例代码是关于 GET 方法,因为它 router.add_get() .但事实并非如此 router.add_url() 或者类似的。

那么,我的理解有错吗?

错误是

$ python3 -m unittest org.py
E
======================================================================
ERROR: test_example (org.MyAppTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/dist-packages/aiohttp/test_utils.py", line 439, in setUp
    self.app = self.loop.run_until_complete(self.get_application())
  File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
    return future.result()
  File "/home/user/share/work/aiotest/org.py", line 16, in get_application
    app.router.add_get('https://stackoverflow.com', hello)
  File "/usr/local/lib/python3.9/dist-packages/aiohttp/web_urldispatcher.py", line 1158, in add_get
    resource = self.add_resource(path, name=name)
  File "/usr/local/lib/python3.9/dist-packages/aiohttp/web_urldispatcher.py", line 1071, in add_resource
    raise ValueError("path should be started with / or be empty")
ValueError: path should be started with / or be empty

----------------------------------------------------------------------
Ran 1 test in 0.001s

FAILED (errors=1)

示例代码

#!/usr/bin/env python3
from aiohttp.test_utils import AioHTTPTestCase, unittest_run_loop
from aiohttp import web, ClientSession


class MyAppTestCase(AioHTTPTestCase):

    async def get_application(self):
        """
        Override the get_app method to return your application.
        """
        async def hello(request):
            return web.Response(text='Hello')

        app = web.Application()
        app.router.add_get('https://stackoverflow.com', hello)
        return app

    # the unittest_run_loop decorator can be used in tandem with
    # the AioHTTPTestCase to simplify running
    # tests that are asynchronous
    @unittest_run_loop
    async def test_example(self):
        async with ClientSession() as session:
            async with session.get('https://stackoverflow.com') as resp:
                assert resp.status == 200
                text = await resp.text()
                assert 'Hello' in text

编辑当前位置我的Python是 3.9.2 (default, Feb 28 2021, 17:03:44) [GCC 10.2.1 20210110] aiohttp是'3.7.4。post0'-都来自Debian 11(稳定)存储库。

0 回复 | 直到 4 年前

Daniil Ryzhkov 4 年前

你不能用这个词来嘲弄一个特定的地址 aiohttp.web.Application() 路由器。它希望您声明相对于应用程序根的路由,如on an example 你提到:

class MyAppTestCase(AioHTTPTestCase):

    async def get_application(self):
        """
        Override the get_app method to return your application.
        """
        async def hello(request):
            return web.Response(text='Hello, world')

        app = web.Application()
        app.router.add_get('/', hello)
        return app

您应该测试在中创建的应用程序 get_application 方法使用 self.client 参考并使用相对路径:

@unittest_run_loop
async def test_example(self):
    resp = await self.client.request("GET", "/")
    assert resp.status == 200
    text = await resp.text()
    assert "Hello, world" in text

或者(你可能真正想要的)使用 responses 图书馆:

@responses.activate
def test_simple():
    responses.add(responses.GET, 'https://stackoverflow.com',
                  body='Hello', status=200)