def METHOD_NAME(self):
    arguments = {'op': 'replace', 'path': '/tags',
                 'value': ['testA', 'testB']}
    obs = self.patch('/study/1', headers=self.header,
                     data=arguments, asjson=True)
    self.assertEqual(obs.code, 200)
    self.assertEqual(obs.body.decode('ascii'),
                     '{"status": "success", "message": ""}')
    # checking the tags were added
    response = self.get('/study/tags/1')
    exp = ({"status": "success", "message": "",
            "tags": ['testA', 'testB']})
    self.assertEqual(response.code, 200)
    self.assertEqual(json_decode(response.body), exp)