Check query string on the request using requests_mock

How to check if a request mocked by requests_mock added some query parameters to a URL?

I have a function func thats do a HTTP POST on the url with some query string on the URL and I want to check if was called with this query string.

This is my attempt, but fails.

query is a empty string and qs is a empty dict.

I have sure that my func is appending the query string on the request.

with requests_mock.Mocker() as mock:
    mock.post(url, text=xml)

    func() # This function will call url + query string

    history = mock.request_history[0]

    assert history.method == "POST" # OK
    assert history.query is None # Returns an empty string, AssertionError: assert '' is None
    assert history.qs is None # Returns an empty dict, assert {} is None 

My func

def credilink():
    url = settings["url"]
    params = settings["params"]
    params["CC"] = query

    response = requests.post(url, params=params)
    # ...

from Check query string on the request using requests_mock