The pytest
framework makes it easy to write small tests, yet
scales to support complex functional testing for applications and libraries.
An example of a simple test:
# content of test_sample.py
def inc(x):
return x + 1
def test_answer():
assert inc(3) == 5
To execute it:
$ pytest ============================= test session starts ============================= collected 1 items test_sample.py F ================================== FAILURES =================================== _________________________________ test_answer _________________________________ def test_answer(): > assert inc(3) == 5 E assert 4 == 5 E + where 4 = inc(3) test_sample.py:5: AssertionError ========================== 1 failed in 0.04 seconds ===========================
Due to pytest
's detailed assertion introspection, only plain assert
statements are used. See getting-started for more examples.
Features
- Detailed info on failing assert statements (no need to remember
self.assert*
names); - Auto-discovery of test modules and functions;
- Modular fixtures for managing small or parametrized long-lived test resources;
- Can run unittest (or trial), nose test suites out of the box;
- Python2.6+, Python3.3+, PyPy-2.3, Jython-2.5 (untested);
- Rich plugin architecture, with over 150+ external plugins and thriving community;
Documentation
For full documentation, including installation, tutorials and PDF documents, please see http://docs.pytest.org.
Bugs/Requests
Please use the GitHub issue tracker to submit bugs or request features.
Changelog
Consult the Changelog page for fixes and enhancements of each version.
License
Copyright Holger Krekel and others, 2004-2016.
Distributed under the terms of the MIT license, pytest is free and open source software.