Cosmic Ray: mutation testing for Python

“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. If a test suite passes on mutated code, then you have a mismatch between your tests and your functionality.

Cosmic Ray has been successfully used on a wide variety of projects ranging from assemblers to oil exploration software.

Contents

• Theory
• Tutorial: The basics
• Tutorial: Distributed, concurrent mutation testing
• Concepts
• How-tos
• Reference

Indices and tables

• Index
• Module Index
• Search Page