How can I de-duplicate responses for pytest? - pytest

Question

The responses library provides mocks for requests. In my case, it looks typically like this:
import responses
#responses.activate
def test_foo():
# Add mocks for service A
responses.add(responses.POST, 'http://service-A/foo', json={'bar': 'baz'}, status=200)
responses.add(responses.POST, 'http://service-A/abc', json={'de': 'fg'}, status=200)
#responses.activate
def test_another_foo():
# Add mocks for service A
responses.add(responses.POST, 'http://service-A/foo', json={'bar': 'baz'}, status=200)
responses.add(responses.POST, 'http://service-A/abc', json={'de': 'fg'}, status=200)
How can I avoid this code duplication?
I would love to have a mock_service_a fixture or something similar.

Answer 1

Just as you suggest, creating a fixture solves these issues.
import pytest
import responses
import requests
#pytest.fixture(scope="module", autouse=True)
def mocked_responses():
with responses.RequestsMock() as rsps:
rsps.add(
responses.POST, "http://service-a/foo", json={"bar": "baz"}, status=200
)
rsps.add(
responses.POST, "http://service-a/abc", json={"de": "fg"}, status=200
)
yield rsps
def test_foo():
resp = requests.post("http://service-a/foo", json={"bar": "baz"})
assert resp.status_code == 200
def test_another_foo():
resp = requests.post("http://service-a/abc", json={"de": "fg"})
assert resp.status_code == 200
Running it returns:
==================================== test session starts =====================================
platform darwin -- Python 3.9.1, pytest-6.2.2, py-1.10.0, pluggy-0.13.1
rootdir: **
collected 2 items
tests/test_grab.py .. [100%]
===================================== 2 passed in 0.21s ======================================