Welcome to pytest!Â¶

a mature full-featured testing tool

runs on Posix/Windows, Python 2.4-3.2, PyPy and Jython-2.5.1 comprehensive online and PDF documentation continuously tested on many Python interpreters used in many projects and organisations, in test suites ranging from 10 to 10s of thousands of tests comes with many tested examples supports good integration practises

provides no-boilerplate testing

makes it easy to get started, refined usage options Asserting with the assert statement helpful traceback and failing assertion reporting allows print debugging and the capturing of standard output during test execution supports PEP 8 compliant coding styles in tests

supports functional testing and complex test setups

(new in 2.2) Profiling test execution duration (much improved in 2.2) marking and test selection (improved in 2.2) parametrized test functions advanced Skip and xfail: dealing with tests that can not succeed unique dependency injection through funcargs can distribute tests to multiple CPUs through xdist plugin can continuously re-run failing tests many builtin helpers flexible Conventions for Python test discovery

integrates many common testing methods

can integrate nose, unittest.py and doctest.py style tests, including running testcases made for Django and trial supports extended xUnit style setup supports domain-specific Working with non-python tests supports the generation of testing coverage reports Javascript unit- and functional testing

extensive plugin and customization system

all collection, reporting, running aspects are delegated to hook functions customizations can be per-directory, per-project or per PyPI released plugins it is easy to add command line options or do other kind of add-ons and customizations.

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Welcome to pytest!Â¶

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