boxed

boxed/mutmut

Mutation testing system

1.4K stars 162 forks 1.4K watchers Python BSD 3-Clause "New" or "Revised" License

mutation-testing python testing

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3 Open Issues Need Help Last updated: Aug 1, 2026

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Mutate f-strings and concatenated strings about 2 months ago

enhancement good first issue

1.4K

Mutation testing system

Python

#mutation-testing#python#testing

String mutations: the two case flips are equivalent wherever the consumer is case-insensitive, and no option turns them off about 2 months ago

enhancement good first issue

1.4K

Mutation testing system

Python

#mutation-testing#python#testing

Add mutation for ternary operators 3 months ago

good first issue

1.4K

Mutation testing system

Python

#mutation-testing#python#testing