We already [have](https://github.com/Mirantis/fuelweb/blob/0cdd2d74d63e6e45b42c925b479ab04804a92fbc/nailgun/nailgun/test/test_node_collection_handlers.py#L108) a test case for
```
        resp = self.app.post(
            reverse('NodeCollectionHandler'),
            json.dumps({'mac': 'ASDFAAASDF11',
                        'meta': self.env.default_metadata(),
                        'status': 'discover'}),
            headers=self.default_headers)
        self.assertEquals(resp.status, 201)
```