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 ===========================
Thanks to pytest's detailed assertion introspection, you can simply use plain assert statements. See getting-started for more examples.
- 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) test suites out of the box
- Python 3.10+ or PyPy3
- Rich plugin architecture, with over 1300+ external plugins and thriving community
For full documentation, including installation, tutorials and PDF documents, please see https://docs.pytest.org/en/stable/.
Please use the GitHub issue tracker to submit bugs or request features.
Consult the Changelog page for fixes and enhancements of each version.
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Copyright Holger Krekel and others, 2004.
Distributed under the terms of the MIT license, pytest is free and open source software.