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mutation-testing

Apply PIT mutation testing to Java Gradle projects to identify weak tests.

40|33|Updated Aug 20, 2015
Search Tags:#testing#quality#java#mutation testing#gradle#pitest
One-click install
npx skills add https://github.com/bitsoex/bitso-java --skill mutation-testing-bitsoex
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mutation-testing
Source: https://github.com/bitsoex/bitso-java/tree/main/.claude/skills/mutation-testing
Command: npx skills add https://github.com/bitsoex/bitso-java --skill mutation-testing-bitsoex

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps identify weaknesses in your Java test suites by finding tests that pass even when the code they are supposed to test has been subtly altered (mutated). This ensures your tests are robust and truly verify behavior.

Core Features & Use Cases

  • Mutation Score Analysis: Quantify test suite effectiveness beyond simple line coverage.
  • Weak Test Identification: Pinpoint specific assertions or test cases that fail to catch bugs.
  • Use Case: After achieving high line coverage on a critical business logic module, use this Skill to run mutation testing. If the mutation score is low, it indicates your tests might not be asserting the correct outcomes, prompting you to add more specific checks.

Quick Start

Run mutation testing with the standard intensity level for your Java Gradle project.

Frequently Asked Questions about mutation-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I find weak Java tests that pass despite code changes?▼

Mutation testing identifies weak Java tests by introducing code mutations and verifying if tests fail. It quantifies test suite effectiveness beyond simple line coverage to ensure tests truly verify behavior.

What is mutation testing and when do I need it for my Java project?▼

Mutation testing analyzes test effectiveness by altering code to see if tests catch the changes. You need it after achieving high line coverage to ensure your tests assert the correct outcomes and are robust.

Does PIT mutation testing work with Gradle and Spock?▼

PIT mutation testing works with Gradle 8.x+ and requires JUnit 5 or Spock framework compatibility. It applies PIT to Java projects to identify and improve test suite quality.

How do I run mutation testing on a Java Gradle project?▼

Run mutation testing by applying PIT to your Java Gradle project. The process introduces code mutations and verifies test failures to pinpoint specific assertions that fail to catch bugs.

What is the difference between line coverage and mutation score analysis?▼

Line coverage only measures executed code, while mutation score analysis quantifies test suite effectiveness by checking if tests fail when code is mutated. Low mutation scores indicate tests are not asserting correct outcomes.

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