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"Easy to mock external HTTP request in Tornado."

Project description

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flymock

Easy to mock external HTTP request in Tornado.

Installation

$ pip install --upgrade flymock

Create mock data

Make a directory in your tests package:

$ mkdir __mock__

Use the hostname as the config filename, assume the url is http://example.com/demo, the config filename should be example.com.yaml, the config see below:

- path: /demo    # path of the request to match
  method: GET    # method of the request to match
  headers:       # Response headers
    Content-Type: application/json
  body: Hello world # Response body
  code: 200      # Response status code

- path: /file
  body_type: file     # Use a file content as the response
  body: demo.json     # Filename(same path of the config file)
  code: 202

- path: /json
  body:               # If body is an object, that will response JSON content.
   code: 2

Usage

import os

from tornado import httpclient
from tornado import testing

from flymock import FlyPatcher


class DemoTestCase(testing.AsyncTestCase):
    def setUp(self):
        super(DemoTestCase, self).setUp()
        path = os.path.join(os.path.dirname(__file__), "__mock__")
        self.patcher = FlyPatcher(path)
        self.http_client = httpclient.AsyncHTTPClient()
        self.patcher.start()

    def tearDown(self):
        super(DemoTestCase, self).tearDown()
        self.patcher.stop()

    @testing.gen_test
    def test_mocked(self):
        resp = yield self.http_client.fetch("http://example.com/demo")
        self.assertEqual(resp.code, 200)

Adjust response dynamic:

patcher = FlyPatcher("/path/to/__mock__")
def hook(response):
   response.patch_json({"a": 1})

with patcher.dynamic_hook(hook):
    # code goes here
    pass

# shortcut to adjust JSON
with patcher.patch_json({"a": 1}):
   # code goes here
   pass

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