FAQ
Hello everyone,

i am happy to announce pylib/py.test 1.0.0, a MIT-licensed
library geared towards advanced testing and elastic distributed
programming with Python. It features the mature cross-project
py.test automated testing tool with many new features, aiming to:

* allow writing zero-boilerplate automated tests in Python
* offer strong debugging and reporting of test failures
* rapidly run and ad-hoc distribute tests to multiple CPUs/platforms
* support unit-, functional and integration testing
* be easy to extend and tackle growing testing needs,
(current prime example oejskit, a live-browser javascript
unittesting 3rd party plugin)

Please check things out at: http://pytest.org or read the blogged
release announcement:

http://tetamap.wordpress.com/2009/08/04/pylib-1-0-0

or read on for some ...

Distinctive new features shipping with py.test 1.0.0
------------------------------------------------------

For those already knowing about the older 0.9.2 release or
being experienced with other testing approaches i'll try to
give a summary of the distinctive testing features
shipping with 1.0.0:

* test function arguments ("funcargs"): With this, python test
functions can name arguments and one writes factory functions to
provide instances for such "fixture" arguments. This page

http://codespeak.net/py/dist/test/funcargs.html

contains reference info and tutorial examples.
Test function arguments also allow for natural test parametrization -
one provides several different argument values,
no changes to the test function needed, no magic "yield" for
generating tests anymore - although 1.0 still allows them and
of course still supports traditional xUnit-style setup_module/class/function
or (new) direct runs of unittest.TestCase style tests.

* distributed testing: distributing test runs among Linux/OSX/Windows
hosts and across python-2.4 till python-2.6 interpreters
works reasonably stable now. This means that you can easily
iron out test-module/function specific problems across a
variety of platforms, accelerating the change & test feedback cycle.

* xfail: a new way to mark tests as "expected to fail" which
means they run normally but are reported/counted specially.
This "xfail" mark is meant to mark missing / wrong implementation
rather than missing dependencies / wrong platforms for which one
uses "skip". Especially for larger test suites making
this distinction is very helpful.

* IO-capturing: output of test functions is captured per-test,
by default including any output from sub processes.
This works on all platforms and also (now) interacts well
with the logging module without importing/using it itself so
there are no interferences.

* pastebin: new command line option "--pastebin" to send your test
session output or individual test failures to the Pocoo pastebin
service and prints out URLs. Convenient for quick IRC/messaging
communication.

* plugins: it is now easy to write plugins by implementing one
or more of the 37 hooks which py.test calls to implement
the testing process. There are many examples, among them
the "oejskit" plugin which integrates testing of javascript
code in real-life browsers into a regular test run.
Apart from such separately distributed "cross-project" plugins
you can also write per-project plugins/extensions that lives
with your testing code.

cheers & have fun,
holger

--
Metaprogramming, Python, Testing: http://tetamap.wordpress.com
Python, PyPy, pytest contracting: http://merlinux.eu

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