requests-testadapter

https://secure.travis-ci.org/ambv/requests-testadapter.png

Currently a very basic module that provides an adapter for requests that mocks network activity for unit test purposes.

How to use

This code assumes your HTTP client is written in a way that enables passing a custom Session object. When that's the case, all you have to do is to mount the adapter to answer for a specific prefix:

>>> import requests
>>> from requests_testadapter import TestAdapter
>>> s = requests.Session()
>>> s.mount('http://', TestAdapter(b'Mock!', status=404))
>>> r = s.get('http://mocked.com')
>>> r.status_code
404
>>> r.text
'Mock!'

You can also specify a headers dictionary as a keyword argument to TestAdapter.

TestSession

In requests 1.2.0 and older, the order of mounted adapters is unpredictable. To make sure you can mount arbitrary paths with their own respective adapters, use TestSession which always matches the longest prefix:

>>> from requests_testadapter import TestAdapter, TestSession
>>> s = TestSession()
>>> s.mount('http://git', TestAdapter(b'git'))
>>> s.mount('http://github', TestAdapter(b'github'))
>>> s.mount('http://github.com', TestAdapter(b'github.com'))
>>> s.mount('http://github.com/about/', TestAdapter(b'github.com/about'))
>>> r = s.get('http://github.com/about/')
>>> r.text
u'github.com/about'
>>> r = s.get('http://github.com')
>>> r.text
u'github.com'
>>> r = s.get('http://gittip.com')
>>> r.text
u'git'

TestSession doesn't connect the default handlers for HTTP and HTTPS so you will be notified if your requests unintentionally try to reach external websites in your unit tests:

>>> r = s.get('http://bitbucket.org')
Traceback (most recent call last):
...
requests.exceptions.InvalidSchema: No connection adapters were found for
'http://bitbucket.org/'

How do I run the tests?

The easiest way would be to extract the source tarball and run:

$ python test/test_testadapter.py

If you have all compatible Python implementations available on your system, you can run tests on all of them by using tox:

$ pip install tox
$ tox
GLOB sdist-make: setup.py
py26 inst-nodeps: .tox/dist/requests-testadapter-0.1.0.zip
py26 runtests: commands[0]
..
----------------------------------------------------------------------
Ran 2 tests in 0.014s

OK
py27 inst-nodeps: .tox/dist/requests-testadapter-0.1.0.zip
py27 runtests: commands[0]
..
----------------------------------------------------------------------
Ran 2 tests in 0.014s

OK
py32 inst-nodeps: .tox/dist/requests-testadapter-0.1.0.zip
py32 runtests: commands[0]
..
----------------------------------------------------------------------
Ran 2 tests in 0.024s

OK
py33 inst-nodeps: .tox/dist/requests-testadapter-0.1.0.zip
py33 runtests: commands[0]
..
----------------------------------------------------------------------
Ran 2 tests in 0.017s

OK
_______________________________ summary ______________________________
  py26: commands succeeded
  py27: commands succeeded
  py32: commands succeeded
  py33: commands succeeded
  congratulations :)

Change Log

0.3.0

fixed a compatibility problem with requests 1.2.1+

0.2.0

introduced TestSession to make adapter order predictable in requests 1.2 and older
TestAdapter doesn't prefetch response.content anymore if stream=True is passed to a request. This lets the user read response.raw herself.

0.1.0

initial published version

Authors

Glued together by Łukasz Langa. Additional fixes by Luke Sneeringer.

ambv/requests-testadapter

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