    def test_post_only(self):
        """
        Verify that we can't call the view when we aren't using POST.
        """
        self.client.login(username=self.staff_user.username, password='test')
        response = self.call_add_users_to_cohorts('', method='GET')
        self.assertEqual(response.status_code, 405)
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.