/testing--mutation-testing

/testing--mutation-testing is a Claude Code skill in the Code section. Sets up mutation testing to measure whether your tests would catch real bugs, then turns surviving mutants into stronger tests.

Author's description

Set up mutation testing, interpret surviving mutants, and harden weak tests

How to ask for it

/testing--mutation-testing set up mutation testing on my project
/testing--mutation-testing why are so many mutants surviving in this module?
/testing--mutation-testing harden tests that miss these mutations

Install

curl -fsSL https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.sh | bash

After installing with the script, type /testing--mutation-testing. Using Cursor, Windsurf or Codex? Platform guides

Demo coming soon

/testing--playwright-mcpBrowser automation with Playwright
Drives a real browser through Playwright MCP to navigate, click, fill forms, debug pages and take screenshots.
Built here
/testing--snapshot-updateTest snapshot updates
Reviews failing test snapshots and decides whether each is an intended change, a real bug or a flaky test before updating anything.
Built here
/testing--test-coverageTest coverage gaps
Finds which code your tests don't cover, ranks the gaps by risk and generates tests for the highest-priority ones.
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/testing--test-e2eEnd-to-end workflow tests
Generates end-to-end tests for a user workflow in Playwright, Cypress or similar, covering happy path, error paths and data cleanup.
Built here
/testing--test-edge-casesEdge case tests
Generates tests for boundaries, nulls, concurrency, Unicode and state in your code, explaining which bug each one would catch.
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/testing--test-fixFixing failing tests
Runs your test suite, works out whether each failure is in the test, the code or the environment, fixes it and re-runs to confirm.
Built here

How to ask for it

Install

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