def METHOD_NAME(self):
    newuser = User.objects.create(email="unauthorized@test.com")
    newuser.set_password("password")
    newuser.save()
    self.client.force_authenticate(newuser)
    url = reverse_lazy("channel-list") + "/" + self.channel.pk
    response = self.client.get(url)
    self.assertEqual(response.status_code, 404)