'Call ``GET & HEAD /groups/{group_id}/users``.'

def test_list_head_users_in_group(self):

    self.put(('/groups/%(group_id)s/users/%(user_id)s' % {'group_id': self.group_id, 'user_id': self.user['id']}))
    resource_url = ('/groups/%(group_id)s/users' % {'group_id': self.group_id})
    r = self.get(resource_url)
    self.assertValidUserListResponse(r, ref=self.user, resource_url=resource_url)
    self.assertIn(('/groups/%(group_id)s/users' % {'group_id': self.group_id}), r.result['links']['self'])
    self.head(resource_url, expected_status=http_client.OK)
