Django unittest function with redirect based on mock return_value

I have a view function similar to

def my_function(request):
    session = create_something('some_random_string')
    return redirect(session.url, code=303)

To test it

import unittest
from django.test import TestCase
from unittest.mock import patch
from my_app.views import my_function

class TestMyFunction(TestCase):

    @patch('my_app.views.create_something', return_value={
        "url": "https://tiagoperes.eu/"
    })
    def test_my_function(self, mock_create_something):
        response = self.client.get("/my-function/")

This gives

AttributeError: 'dict' object has no attribute 'url'

This question is similar the following questions

• Cannot redirect when Django model class is mocked (in that I'm using the redirect() that takes dynamic values coming from the mocked function, so can also reach easily the error TypeError: quote_from_bytes() expected bytes)
• How to debug patched method with unittest.mock (in that without the return_value I'd get TypeError: expected string or bytes-like object)

I had to substitute the return_value in patch to use MagicMock

@patch('my_app.views.create_something', return_value=MagicMock(url="https://tiagoperes.eu"))