How to unit test Google Cloud Endpoints

Question

I\'m needing some help setting up unittests for Google Cloud Endpoints. Using WebTest all requests answer with AppError: Bad response: 404 Not Found. I\'m not really sure if

Answer 1

My solution uses one dev_appserver instance for the entire test module, which is faster than restarting the dev_appserver for each test method.

By using Google's Python API client library, I also get the simplest and at the same time most powerful way of interacting with my API.

import unittest
import sys
import os

from apiclient.discovery import build
import dev_appserver


sys.path[1:1] = dev_appserver.EXTRA_PATHS

from google.appengine.tools.devappserver2 import devappserver2
from google.appengine.tools.devappserver2 import python_runtime

server = None


def setUpModule():
    # starting a dev_appserver instance for testing
    path_to_app_yaml = os.path.normpath('path_to_app_yaml')
    app_configs = [path_to_app_yaml]
    python_runtime._RUNTIME_ARGS = [
        sys.executable,
        os.path.join(os.path.dirname(dev_appserver.__file__),         
        '_python_runtime.py')
        ]
    options = devappserver2.PARSER.parse_args(['--port', '8080',
                                           '--datastore_path', ':memory:',
                                           '--logs_path', ':memory:',
                                           '--skip_sdk_update_check',
                                           '--',
                                           ] + app_configs)
    global server
    server = devappserver2.DevelopmentServer()
    server.start(options)


def tearDownModule():
    # shutting down dev_appserver instance after testing
    server.stop()


class MyTest(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        # build a service object for interacting with the api
        # dev_appserver must be running and listening on port 8080
        api_root = 'http://127.0.0.1:8080/_ah/api'
        api = 'my_api'
        version = 'v0.1'
        discovery_url = '%s/discovery/v1/apis/%s/%s/rest' % (api_root, api,                     
                                                             version)
        cls.service = build(api, version, discoveryServiceUrl=discovery_url)

    def setUp(self):
        # create a parent entity and store its key for each test run
        body = {'name': 'test  parent'}
        response = self.service.parent().post(body=body).execute()   
        self.parent_key = response['parent_key']

    def test_post(self):
        # test my post method 
        # the tested method also requires a path argument "parent_key" 
        # .../_ah/api/my_api/sub_api/post/{parent_key}
        body = {'SomeProjectEntity': {'SomeId': 'abcdefgh'}}
        parent_key = self.parent_key
        req = self.service.sub_api().post(body=body,parent_key=parent_key)
        response = req.execute()
        etc..