tests/test_formdata.py::test_mark_formdata_as_processed relies on external web server

[derlih]

Describe the bug

This test uses http://httpbin.org to send the request. If this server is not responding, the test will fail.
Actually I caught this problem in CI while I was working on a PR. This makes aiohttp CI not so reliable.

postmanlabs/httpbin#150 (comment)

To Reproduce

Sometimes it just happen.

Expected behavior

Use local instance of httpbin or use aiohttp test server if possible.

Logs/tracebacks

n/a

Python Version

$ python --version
Python 3.8.5

aiohttp Version

$ python -m pip show aiohttp
Name: aiohttp
Version: 4.0.0a1
Summary: Async http client/server framework (asyncio)
Home-page: https://github.com/aio-libs/aiohttp
Author: Nikolay Kim
Author-email: [email protected]
License: Apache 2
Location: /home/dmitry/Sources/aiohttp
Requires: chardet, multidict, async-timeout, yarl, typing-extensions, frozenlist, aiosignal
Required-by:

multidict Version

$ python -m pip show multidict
Name: multidict
Version: 5.1.0
Summary: multidict implementation
Home-page: https://github.com/aio-libs/multidict
Author: Andrew Svetlov
Author-email: [email protected]
License: Apache 2
Location: /home/dmitry/Sources/aiohttp/venv/lib/python3.8/site-packages
Requires: 
Required-by: yarl, aiohttp

yarl Version

$ python -m pip show yarl
Name: yarl
Version: 1.6.3
Summary: Yet another URL library
Home-page: https://github.com/aio-libs/yarl/
Author: Andrew Svetlov
Author-email: [email protected]
License: Apache 2
Location: /home/dmitry/Sources/aiohttp/venv/lib/python3.8/site-packages
Requires: idna, multidict
Required-by: aiohttp

OS

ubuntu 20.04
but happen in CI for mac

Related component

Client

Additional context

No response

Code of Conduct

• I agree to follow the aio-libs Code of Conduct

[Dreamsorcerer]

Doesn't look like the test has anything to do with httpbin.org. It just needs to send a post request somewhere twice.

Also, it appears the original commit raises a RuntimeError, when it should probably raise some kind of client error, and in fact the change file says it raises a ClientPayloadError...
Nevermind: #4351 (comment)

0273535

[derlih]

aiohttp/tests/test_formdata.py

Lines 91 to 101 in d55728d

	async def test_mark_formdata_as_processed() -> None:
	async with ClientSession() as session:
	url = "http://httpbin.org/anything"
	data = FormData()
	data.add_field("test", "test_value", content_type="application/json")
	await session.post(url, data=data)
	assert len(data._writer._parts) == 1
	with pytest.raises(RuntimeError):
	await session.post(url, data=data)

I think so too. IMO it would be better to use aiohttp server instead.