def METHOD_NAME(self):
    client = Client('foo',
            resource_owner_key='token',
            resource_owner_secret='secret')
    _, headers, _ = client.sign(self.uri + '/extra')
    v, r = self.endpoint.validate_protected_resource_request(
            self.uri, headers=headers)
    self.assertFalse(v)
    # the validator log should have `False` values
    self.assertTrue(r.validator_log['client'])
    self.assertTrue(r.validator_log['realm'])
    self.assertTrue(r.validator_log['resource_owner'])
    self.assertFalse(r.validator_log['signature'])