def METHOD_NAME(self):
    arguments = {'op': 'replace',
                 'path': '/1/investigation_type/',
                 'value': 'Cancer Genomics'}
    response = self.patch('/prep_template/', data=arguments)
    self.assertEqual(response.code, 200)
    exp = {'status': 'success', 'message': ''}
    self.assertEqual(loads(response.body), exp)