'Test with an invalid rolename parameter.'

def test_list_course_role_members_bad_rolename(self):

    url = reverse('list_course_role_members', kwargs={'course_id': self.course.id.to_deprecated_string()})
    response = self.client.post(url, {'rolename': 'robot-not-a-rolename'})
    self.assertEqual(response.status_code, 400)
