https://github.com/betamaxpy/betamax

A VCR imitation designed only for python-requests.
https://github.com/betamaxpy/betamax

http python recording testing vcr

Last synced: about 2 months ago
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A VCR imitation designed only for python-requests.

• Host: GitHub
• URL: https://github.com/betamaxpy/betamax
• Owner: betamaxpy
• License: other
• Created: 2013-07-16T03:23:22.000Z (about 11 years ago)
• Default Branch: main
• Last Pushed: 2024-02-23T18:06:28.000Z (7 months ago)
• Last Synced: 2024-03-27T08:24:03.708Z (6 months ago)
• Topics: http, python, recording, testing, vcr
• Language: Python
• Homepage: https://betamax.readthedocs.io/en/latest/
• Size: 535 KB
• Stars: 555
• Watchers: 19
• Forks: 60
• Open Issues: 25
• Metadata Files:
  • Readme: README.rst
  • Changelog: HISTORY.rst
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.rst
  • Authors: AUTHORS.rst

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• starred-awesome - betamax - A VCR imitation designed only for python-requests. (Python)

README

        
betamax

=======

Betamax is a VCR_ imitation for requests. This will make mocking out requests

much easier. It is tested on `Travis CI`_.

Put in a more humorous way: "Betamax records your HTTP interactions so the NSA

does not have to."

Example Use

-----------

.. code-block:: python

    from betamax import Betamax

    from requests import Session

    from unittest import TestCase

    with Betamax.configure() as config:

        config.cassette_library_dir = 'tests/fixtures/cassettes'

    class TestGitHubAPI(TestCase):

        def setUp(self):

            self.session = Session()

            self.headers.update(...)

        # Set the cassette in a line other than the context declaration

        def test_user(self):

            with Betamax(self.session) as vcr:

                vcr.use_cassette('user')

                resp = self.session.get('https://api.github.com/user',

                                        auth=('user', 'pass'))

                assert resp.json()['login'] is not None

        # Set the cassette in line with the context declaration

        def test_repo(self):

            with Betamax(self.session).use_cassette('repo'):

                resp = self.session.get(

                    'https://api.github.com/repos/sigmavirus24/github3.py'

                    )

                assert resp.json()['owner'] != {}

What does it even do?

---------------------

If you are unfamiliar with VCR_, you might need a better explanation of what

Betamax does.

Betamax intercepts every request you make and attempts to find a matching

request that has already been intercepted and recorded. Two things can then

happen:

1. If there is a matching request, it will return the response that is

   associated with it.

2. If there is **not** a matching request and it is allowed to record new

   responses, it will make the request, record the response and return the

   response.

Recorded requests and corresponding responses - also known as interactions -

are stored in files called cassettes. (An example cassette can be seen in

the `examples section of the documentation`_.) The directory you store your

cassettes in is called your library, or your `cassette library`_.

VCR Cassette Compatibility

--------------------------

Betamax can use any VCR-recorded cassette as of this point in time. The only

caveat is that python-requests returns a URL on each response. VCR does not

store that in a cassette now but we will. Any VCR-recorded cassette used to

playback a response will unfortunately not have a URL attribute on responses

that are returned. This is a minor annoyance but not something that can be

fixed.

.. _VCR: https://github.com/vcr/vcr

.. _Travis CI: https://travis-ci.org/sigmavirus24/betamax

.. _examples section of the documentation:

    http://betamax.readthedocs.org/en/latest/api.html#examples

.. _cassette library:

    http://betamax.readthedocs.org/en/latest/cassettes.html