|Python version| |Python version windows| |Build Status| |Documentation|
"Four human beings -- changed by space-born cosmic rays into something more than merely human."
-- The Fantastic Four
Cosmic Ray is a mutation testing tool for Python 3.
It makes small changes to your source code, running your test suite for each one. Here's how the mutations look:
.. image:: docs/source/cr-in-action.gif
|fulldocumentation|
The easiest way to contribute is to use Cosmic Ray and submit reports for defects or any other issues you come across. Please see CONTRIBUTING.rst for more details.
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