Unit testing of OAuth on Flask - flask

Question

I'm new to coding and I feel really stuck. I decided to unit test my micro Flask app. I use "Google sign in" to authenticate my users, but I'm not able to get through the Google authentication and assert what is really on the page. I have no idea if I need to mock, play with the session or application context.
Here is the code for authentication process:
def login_required(f):
#wraps(f)
def decorated_function(*args, **kwargs):
user = dict(session).get('profile', None)
if user is not None:
email = session['profile']['email']
else:
email = None
if user:
return f(*args, **kwargs)
return render_template('login.html', email=email)
return decorated_function
#app.route('/login/')
def login():
google = oauth.create_client('google') # create the google oauth client
redirect_uri = url_for('authorize', _external=True)
return google.authorize_redirect(redirect_uri)
#app.route('/authorize')
def authorize():
google = oauth.create_client('google') # create the google oauth client
token = google.authorize_access_token() # Access token from google (needed to get user info)
resp = google.get('userinfo') # userinfo specificed in the scrope
user_info = resp.json()
# Loading and cleaning all user emails
auth_users = db.session.query(users.email).all()
auth_users = [str(i).strip("(),'") for i in auth_users]
# Checking if user is in the list
if user_info['email'] in auth_users:
flash("Boli ste úspešne prihlásený.", category="success")
else:
flash("Nemáte práva na prístup.", category="primary")
return redirect('/')
session['profile'] = user_info
# make the session pernament so it keeps existing after broweser gets closed
session.permanent = True
return redirect('/')
The test structure look like this:
class Uvo_page(unittest.TestCase):
def setUp(self):
self.client = app.test_client(self)
self.user_info = {'email': 'xxx'}
self.auth_users = ['xxx', 'yyy']
# UVO page shows results
def test_uvo_page_show_results(self):
response = self.client.get('/show/1',
content_type='html/text',
follow_redirects=True)
test_string = bytes('Sledované stránky', 'utf-8')
self.assertTrue(test_string in response.data)
I thought that by defining the "user_info" it will be used for authentication evaluation. Instead of it it does not continue to "/authorize" and authentication, but stays on the login page.