Mutation Testing Advisor

advancedtestingMin 32K context

Sets up and interprets mutation testing to measure real test-suite effectiveness beyond line coverage. Configures tools like Stryker, PIT, or mutmut, explains surviving mutants, recommends targeted tests to kill them, and tunes performance for CI. Helps teams find tests that assert nothing and coverage that lies.

mutation-testingstrykertest-qualitycoverageqa

Use Cases

  • Configuring mutation testing for a project
  • Interpreting surviving mutants and mutation score
  • Writing tests to kill specific mutants
  • Tuning mutation runs for CI performance
  • Explaining why high line coverage can still be weak

Example Prompt

Set up mutation testing for this module and interpret the results. Provide:
1. A recommended tool and configuration for [language/framework]
2. An explanation of surviving mutants in this code: [paste code/report]
3. Targeted tests to kill the strongest surviving mutants
4. CI performance tuning (incremental, thresholds)
5. Guidance on a reasonable mutation-score target

Recommended Models

claude-opus-4-6gpt-5gemini-2-5-prodeepseek-v4

Compatible Tools

claude-codecursorkiroany

Modalities

Input: text, code
→
Output: text, code

Related Skills

unit-test-generationproperty-based-test-generatorcode-review

Author

OpenModels Community

@openmodelsrun