@mock_s3 permanently breaks requests library

At first look, I thought this was a duplicate of https://github.com/spulec/moto/issues/303.

However, on further inspection, the problem is only present with the mock_s3 decorator, not with the mock_s3_deprecated decorator. Therefore, if my inspection of the code base is right, this looks like a problem related to the responses library or the use of it in moto, whereas https://github.com/spulec/moto/issues/303 concerned the HTTPretty library.

Anyway, the meat of the issue:

After using @mock_s3 in django tests, other test classes that use LiveserverTestCase and the requests library stop working, and fail with the error: ConnectionError: Connection refused.

This is not an inherent problem with responses itself, as the following test demonstrates:

python -c "from moto.packages.responses.responses import mock; import requests; mock.start(); mock.stop(); print requests.get('http://google.com')"
<Response [200]>

However, if mock.stop() is omitted, you see the same error as in the django test:

python -c "from moto.packages.responses.responses import mock; import requests; mock.start(); print requests.get('http://google.com')"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/REDACTED/env/local/lib/python2.7/site-packages/requests/api.py", line 72, in get
    return request('get', url, params=params, **kwargs)
  File "/home/REDACTED/env/local/lib/python2.7/site-packages/requests/api.py", line 58, in request
    return session.request(method=method, url=url, **kwargs)
  File "/home/REDACTED/env/local/lib/python2.7/site-packages/requests/sessions.py", line 502, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/REDACTED/env/local/lib/python2.7/site-packages/requests/sessions.py", line 612, in send
    r = adapter.send(request, **kwargs)
  File "/home/REDACTED/env/local/lib/python2.7/site-packages/moto/packages/responses/responses.py", line 302, in unbound_on_send
    return self._on_request(adapter, request, *a, **kwargs)
  File "/home/REDACTED/env/local/lib/python2.7/site-packages/moto/packages/responses/responses.py", line 244, in _on_request
    raise response
requests.exceptions.ConnectionError: Connection refused: GET http://google.com/

This suggests to me that, one way or another, moto is failing to call mock.stop().

moto version 1.0.1 Django version 1.11.3

[JoostvDoorn]

@yhvh A workaround for this for now is:

import requests
import responses
import moto
import unittest

class TestRequests(unittest.TestCase):
    @moto.mock_s3
    def test_requests(self):
        responses.add_passthru('https://')
        response = requests.get('https://www.google.com')
        self.assertEqual(response.status_code, 200)

unittest.main()

[kingbuzzman]

As of moto 1.3.5 this works:

    import responses

    responses.add_passthru('https://')
    responses.add_passthru('http://')