401 != 403 error while testing django rest_framework

i was testing the following in django restframework and I got an AssertionError saying 401 != 403

Below is my code:

class ProfileViewSetTestCase(APITestCase):

    list_url = reverse("profile-list")

    def setUp(self):
        self.user = User.objects.create_user(username="davinchi", password="some-very-psw")
        self.token = Token.objects.create(user=self.user)
        self.api_authentication()

    def api_authentication(self):
        self.client.credentials(HTTP_AUTHORIZATION="Token " + self.token.key)

    def test_profile_list_authenticated(self):
        response = self.client.get(self.list_url)
        self.assertEqual(response.status_code, status.HTTP_200_OK)

    def test_profile_list_un_authenticated(self):
        self.client.force_authenticate(user=None)
        response = self.client.get(self.list_url)
        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)