Django Testing - SimpleCookie and Session

Question

Problem: My testing client appears to log out once i attempt to set a cookie. I have workspace (project) object that i want my client to access. The access itself works fine, but as soon as i attempt to edit cookies in my session, the client gets logged out. My test is documented below.

Code

import time
from http.cookies import SimpleCookie

from django.contrib.auth.models import User
from django.test import Client, TestCase
from django.urls import reverse
from myproject.models import DataSource, Workspace


class TestSomeStuff(TestCase):

    def setUp(self):
        datasource1, _ = DataSource.objects.update_or_create(id=1, defaults=dict(source_name="Source 1"))

        workspace1, _ = Workspace.objects.get_or_create(id=1, defaults=dict(project_name="Project 1",
                                                                            datasource=datasource1))
        self.workspace_view_url = reverse("workspace", args=[workspace1.id])
        self.client = Client()
        print(self.client.get(self.workspace_view_url))  # 302 - redirect to login page as expected
        self.client.force_login(User.objects.get_or_create(username='testuser')[0])
        print(self.client.get(self.workspace_view_url))  # 200 - as expected
        time.sleep(2)
        print(self.client.get(self.workspace_view_url))  # 200 - as expected
        time.sleep(2)
        self.client.cookies = SimpleCookie()
        print(self.client.get(self.workspace_view_url))  # 302 - why?

    def test_my_test(self):
        pass

Answer 1

The line self.client.cookies = SimpleCookie() wipes all cookies - including the 'sessionid' and 'csrftoken'. I changed it to self.client.cookies["cookie_key"] = "cookie_value"