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Top 3 Python mutation-testing Projects
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> How do I know whether my tests are passing because they're properly testing correct code or because they're failing to test incorrect code?
One mechanism to verify that is by running a mutation testing [0] tool. They are available for many languages; mutmut [1] is a great example for Python.
[0] https://en.wikipedia.org/wiki/Mutation_testing
[1] https://mutmut.readthedocs.io
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Project mention: Show HN: Using old school mutation testing to boost LLM based unit test gen | news.ycombinator.com | 2024-07-22
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mutatest
Python mutation testing: test your tests! Safely run mutation trials without source code modifications and see what will get past your test suite.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Python mutation-testing discussion
Python mutation-testing related posts
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Be Suspicious of Success
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Show HN: Using old school mutation testing to boost LLM based unit test gen
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CrowdStrike shows why me need more serious software testing
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Show HN: We use LLMs to find testing gaps in codebases
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Show HN: Mutahunter – Fast, language agnostic, software testing using LLM agents
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Show HN: Extreme Mutation Testing to Optimize LLM Agent-Based Mutation Testing
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Bounty for Cash program for our LLM based testing tool Mutahunter.ai
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A note from our sponsor - Judoscale
judoscale.com | 19 Apr 2025
Index
What are some of the best open-source mutation-testing projects in Python? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | mutmut | 987 |
| 2 | mutahunter | 266 |
| 3 | mutatest | 96 |
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