human
Solve the following python programming problem given the following code:
@ mock.patch ('shade.OpenStackCloud.nova_client') 
def test_delete_server_fails(self, nova_mock) : 
    '
        Test that delete_server wraps novaclient exceptions
        ' 
    nova_mock.servers.list.return_value = [fakes.FakeServer ('1212', 'speedy', 'ACTIVE')] 
    for fail in self.novaclient_exceptions : 
        def _raise_fail(server) : 
            raise fail (code = fail.http_status) 
nova_mock.servers.delete.side_effect = _raise_fail 
        exc = self.assertRaises (shade_exc.OpenStackCloudException, self.cloud.delete_server, 'speedy', wait = False) 
        self.assertIn (self.message, str (exc)) 

    
    

    Fix the buggy line: self.assertIn (self.message, str (exc))
assistant
#Here is Python code to fix the buggy line: self.

self.assertIn (fail.message, str (exc))