How to Mock a Google API Library with Python 3.7 for Unit Testing

Question

I\'m trying to create a set of Unit Tests to test the Google Client Library for Bigquery. I\'m struggling to make a Unittest file which will mock the client and will let me test

Answer 1

I also find it hard to get around the authentication part and only mock interacting with methods, so I ended up just mocked the whole library. :facepalm:

import sys

from unittest.mock import MagicMock

sys.modules["google.cloud.storage"] = MagicMock()

from your_application import make_app


def test_make_app():
    make_app()