Two samples using a spy, including possible assertions.

test_spy.py

"""
In this example we will spy on one method without obstructing it.
When we place

"""
import requests
from unittest.mock import call


URL1 = "https://www.python.org/"
URL2 = "https://www.python.org/dev/peps/pep-0008/"

def test_spy_request(mocker):

    session = requests.Session()  # Use session if you are going to hit the same server several times
    spy = mocker.patch.object(session, "get", wraps=session.get)

    response1 = session.get(URL1)
    response2 = session.get(URL2)

    assert response1.status_code == 200
    assert response2.status_code == 200

    assert spy.call_count == 2

    spy.assert_any_call(URL2)
    spy.assert_has_calls([call(URL1), call(URL2)])
    spy.assert_has_calls([call(URL2), call(URL1)], any_order=True)


def test_another_spy_request(mocker):  # Same test but different call to spy

    session = requests.Session()  # Use session if you are going to hit the same server several times
    spy = mocker.spy(session, "get")

    response1 = session.get(URL1)
    response2 = session.get(URL2)

    assert response1.status_code == 200
    assert response2.status_code == 200

    assert spy.call_count == 2

    spy.assert_any_call(URL2)
    spy.assert_has_calls([call(URL1), call(URL2)])
    spy.assert_has_calls([call(URL2), call(URL1)], any_order=True)