def METHOD_NAME(self, authors_management):
    """Removing a member effectively being an author."""
    result = self.client.post(
        reverse("content:remove-author", args=[self.tuto.pk]),
        {"username": self.other_author.username},
        follow=False,
    )
    self.assertEqual(result.status_code, 302)
    self.assertEqual(PublishableContent.objects.get(pk=self.tuto.pk).authors.count(), 1)
    self.assertEqual(authors_management.send.call_count, 1)
    self.assertEqual(authors_management.send.call_args[1]["action"], "remove")
    self.assertIsNone(UserGallery.objects.filter(gallery=self.tuto.gallery, user=self.other_author).first())