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How to use revert_resize_server method in tempest

Best Python code snippet using tempest_python

test_migrations.py

Source:test_migrations.py

...72        waiters.wait_for_server_status(self.servers_client, server['id'],73                                       'VERIFY_RESIZE')74        # Now revert the resize, it should be OK even though the original75        # flavor used to boot the server was deleted.76        self.servers_client.revert_resize_server(server['id'])77        waiters.wait_for_server_status(self.servers_client, server['id'],78                                       'ACTIVE')79        server = self.servers_client.show_server(server['id'])['server']80        self.assertEqual(flavor['id'], server['flavor']['id'])81    def _test_cold_migrate_server(self, revert=False):82        if CONF.compute.min_compute_nodes < 2:83            msg = "Less than 2 compute nodes, skipping multinode tests."84            raise self.skipException(msg)85        server = self.create_test_server(wait_until="ACTIVE")86        src_host = self.admin_servers_client.show_server(87            server['id'])['server']['OS-EXT-SRV-ATTR:host']88        self.admin_servers_client.migrate_server(server['id'])89        waiters.wait_for_server_status(self.servers_client,90                                       server['id'], 'VERIFY_RESIZE')91        if revert:92            self.servers_client.revert_resize_server(server['id'])93            assert_func = self.assertEqual94        else:95            self.servers_client.confirm_resize_server(server['id'])96            assert_func = self.assertNotEqual97        waiters.wait_for_server_status(self.servers_client,98                                       server['id'], 'ACTIVE')99        dst_host = self.admin_servers_client.show_server(100            server['id'])['server']['OS-EXT-SRV-ATTR:host']101        assert_func(src_host, dst_host)102    @decorators.idempotent_id('4bf0be52-3b6f-4746-9a27-3143636fe30d')103    @testtools.skipUnless(CONF.compute_feature_enabled.cold_migration,104                          'Cold migration not available.')105    def test_cold_migration(self):106        self._test_cold_migrate_server(revert=False)...

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