Created
August 8, 2021 12:15
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Patching in Python with pytest using monkeypatch and requests_mock
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| import requests | |
| API_URL = "https://example.com" # often imported from settings | |
| # | |
| # Code | |
| # | |
| def get_user_with_org(id: str): | |
| """Gets a User object with the User's Organisation""" | |
| # fetch the data (side effect) | |
| user = requests.get(f'{API_URL}/user/{id}').json() | |
| org_id = user['org_id'] | |
| organisation = requests.get(f'{API_URL}/organisation/{org_id}').json() | |
| return {'user': user, 'organisation': organisation} | |
| # | |
| # Tests: pytest monkeypatch | |
| # | |
| from unittest.mock import MagicMock | |
| def test_get_user_with_org(monkeypatch): | |
| """Test getting a user + organisation by mocking the side effect""" | |
| monkeypatch.setattr(requests, "get", lambda _: MagicMock()) | |
| result = get_user_with_org("test-id") | |
| assert 'organisation' in result | |
| assert 'user' in result | |
| assert result['user']['org_id'].__str__.called | |
| # | |
| # Tests: pytest + requests_mock | |
| # | |
| import requests_mock | |
| def test_get_user_with_org2(requests_mock): | |
| """Test getting a user + organisation by mocking with requests_mock library""" | |
| requests_mock.get( | |
| f'{API_URL}/user/user-1', | |
| json={'id': 'user-1', 'name': 'Test User', 'org_id': 'org-1'} | |
| ) | |
| requests_mock.get( | |
| f'{API_URL}/organisation/org-1', | |
| json={'id': 'org-1', 'name': 'Test Org'} | |
| ) | |
| result = get_user_with_org('user-1') | |
| assert 'organisation' in result | |
| assert 'user' in result | |
| assert result['user']['name'] == 'Test User' | |
| assert result['organisation']['name'] == 'Test Org' |
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