PyMoq

PyMoq is a tool for mocking HTTP services.

Installation

pip install PyMoq

Usage

By default PyMoq runs on 8080 TCP port, it can be changed:

mock = pymoq.Mock(port=8090)

Stub can be created by setting path and http method (GET is the default).

mock.create_stub('/books', method='post')

It is possible to set path as regex.

mock.create_stub('/books/[0-9]+', method='put')

For each stub a response can be configured with headers and http status code. Headers has to be dictionary with header name as its key.

mock.create_stub('/books', method='post').response('...',
                                                   headers={'name': 'value'},
                                                   http_status=201)

Example test

import unittest
import requests
from pymoq import pymoq

class ExampleUsageTestCase(unittest.TestCase):
    def test_direct_usage(self):
      content = '{"author": "John Doe", "title": "Lorem ipsum dolor sit amet", "id": 1}'
      headers = {
        'content-type': 'application/json; charset=utf-8',
        'location': 'http://localhost:8090/books/1'
      }

      mock = pymoq.Mock(port=8090)
      mock.create_stub('/books', method='post').response(content,
                                                        headers=headers,
                                                        http_status=201)

      with mock.run():
          response = requests.post('http://localhost:8090/books',
                            data={"author": "John Doe", "title": "Lorem ipsum dolor sit amet"})
          self.assertEqual(response.status_code, 201)
          self.assertEqual(response.headers['content-type'], 'application/json; charset=utf-8')
          self.assertEqual(response.headers['location'], 'http://localhost:8090/books/1')
          self.assertEqual(response.text, content)

Configure with JSON file

A mock can be configured with json file. A file should looks like:

[{
    "request": {
        "url": "/books",
        "method": "post"
    },
    "response": {
        "content": {"author": "John Doe", "title": "Lorem ipsum dolor sit amet", "id": 1},
        "headers": {
            "content-type": "application/json; charset=utf-8",
            "location": "http://localhost:8080/books/1"
        },
        "httpStatus": 201
    }
}]

Example test

import unittest
import requests
from pymoq import pymoq


class JsonConfigTestCase(unittest.TestCase):
    def test_load_config_from_file(self):
        mock = pymoq.Mock()
        mock.load('config.json')

        with mock.run():
            response = requests.post('http://localhost:8080/books',
                        data={"author": "John Doe", "title": "Lorem ipsum dolor sit amet"})
            self.assertEqual(response.status_code, 201)
            self.assertEqual(response.headers['content-type'], 'application/json; charset=utf-8')
            self.assertEqual(response.headers['location'], 'http://localhost:8080/books/1')

            content = response.json()
            self.assertEqual(content['author'], 'John Doe')
            self.assertEqual(content['title'], 'Lorem ipsum dolor sit amet')
            self.assertEqual(content['id'], 1)

Request verifications

PyMoq can be used to validate requests.

Example test

import unittest
import requests
from pymoq import pymoq


class RequestVerificationTestCase(unittest.TestCase):
    def test_request(self):
        mock = pymoq.Mock()
        stub = mock.create_stub('/books', method='post')

        with mock.run():
            requests.post('http://localhost:8080/books',
                          json={'firstName': 'John', 'lastName': 'Doe'}
                          headers={'content-type': 'application/json'})

        stub.assert_requested_once()
        stub.assert_requested_with_header('content-type', 'application/json')
        stub.assert_requested_body_contains('Doe')