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testingtesting-security

mutation-testing

Validate test effectiveness with mutation testing using Stryker (TypeScript/JavaScript) and mutmut (Python). Find weak tests that pass despite code mutations. Use when user mentions mutation testing, Stryker, mutmut, test effectiveness, finding weak tests, or improving test quality through mutation analysis.

laurigates
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laurigates
Updated 1/19/2026
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quick start

Installation and usage

Validate test effectiveness with mutation testing using Stryker (TypeScript/JavaScript) and mutmut (Python). Find weak tests that pass despite code mutations. Use when user mentions mutation testing, Stryker, mutmut, test effectiveness, finding weak tests, or improving test quality through mutation analysis.

Installation
$ install --globalskills.sh
Usage

Once installed, you can use this skill by running the following command in your terminal:

skills use mutation-testing