Mutation Testing
Amplicode/spring-skills
Set up and run mutation testing with PIT (pitest) on a Gradle project, and read the mutation score.
Run test coverage report using Kover/Gradle and create test improvement plan document
$ npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jvm-skills/jvm-skills coverage-kover-gradle --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/jvm-skills/jvm-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.junie/skills/coverage-kover-gradle .claude/skills/coverage-kover-gradle && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "coverage-kover-gradle" agent skill from https://github.com/jvm-skills/jvm-skills/tree/main/.junie/skills/coverage-kover-gradle into .claude/skills/coverage-kover-gradle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage-kover-gradle", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/jvm-skills/jvm-skills/tree/main/.junie/skills/coverage-kover-gradleType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jvm-skills/jvm-skills coverage-kover-gradle --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jvm-skills/jvm-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.junie/skills/coverage-kover-gradle .agents/skills/coverage-kover-gradle && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "coverage-kover-gradle" agent skill from https://github.com/jvm-skills/jvm-skills/tree/main/.junie/skills/coverage-kover-gradle into .agents/skills/coverage-kover-gradle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage-kover-gradle", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jvm-skills/jvm-skills coverage-kover-gradle --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jvm-skills/jvm-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.junie/skills/coverage-kover-gradle .cursor/skills/coverage-kover-gradle && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "coverage-kover-gradle" agent skill from https://github.com/jvm-skills/jvm-skills/tree/main/.junie/skills/coverage-kover-gradle into .cursor/skills/coverage-kover-gradle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage-kover-gradle", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/jvm-skills/jvm-skills.git --path .junie/skills/coverage-kover-gradle--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jvm-skills/jvm-skills coverage-kover-gradle --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jvm-skills/jvm-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.junie/skills/coverage-kover-gradle .gemini/skills/coverage-kover-gradle && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "coverage-kover-gradle" agent skill from https://github.com/jvm-skills/jvm-skills/tree/main/.junie/skills/coverage-kover-gradle into .gemini/skills/coverage-kover-gradle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage-kover-gradle", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install jvm-skills/jvm-skills coverage-kover-gradleInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jvm-skills/jvm-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/.junie/skills/coverage-kover-gradle .github/skills/coverage-kover-gradle && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "coverage-kover-gradle" agent skill from https://github.com/jvm-skills/jvm-skills/tree/main/.junie/skills/coverage-kover-gradle into .github/skills/coverage-kover-gradle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage-kover-gradle", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jvm-skills/jvm-skills coverage-kover-gradle --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jvm-skills/jvm-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.junie/skills/coverage-kover-gradle .opencode/skills/coverage-kover-gradle && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "coverage-kover-gradle" agent skill from https://github.com/jvm-skills/jvm-skills/tree/main/.junie/skills/coverage-kover-gradle into .opencode/skills/coverage-kover-gradle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coverage-kover-gradle", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
coverage-kover-gradleRun test coverage report using Kover/Gradle and create test improvement plan document
Coverage Kover Gradle is an agent skill from jvm-skills/jvm-skills. Run test coverage report using Kover/Gradle and create test improvement plan document
Its SKILL.md is about 300 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Testing & QA, covering Test coverage. It works with Gradle. The licence is Apache-2.0.
3 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit c6d477f. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash and markdown).
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Coverage Kover Gradle loads about 301 tokens when it runs. Until then it costs about 27 tokens; SKILL.md has 63 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from jvm-skills/jvm-skills at commit c6d477f, republished under its Apache-2.0 licence (© jvm-skills). 63 words, ~301 tokens.
.claude/skills/coverage-kover-gradle/SKILL.md (or your agent's skills folder).Run test coverage and generate improvement plan.
Run coverage report
./gradlew -Pplaywright.headless=true koverXmlReportRun analysis script
kotlin scripts/coverage-analysis.main.ktsCreate improvement document
Create docs/dev/YYYY-MM-DD_test-improvements.md with:
# Test Improvement Plan - {date}
**Current Coverage: X%**
## Priority Packages
| Package | Coverage |
|---------|----------|
| core.x | X% |
## Priority Classes
1. **ClassName** (X%) - path/to/Class.kt
- Test case 1
- Test case 2
## Next Steps
- [ ] Create XTest.kt
- [ ] Create YTest.ktOpen the created document in IntelliJ:
idea docs/dev/YYYY-MM-DD_test-improvements.md© jvm-skills, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in .junie/skills/coverage-kover-gradle of jvm-skills/jvm-skills.
Open the folder on GitHubat commit c6d477f
Coverage Kover Gradle next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Coverage Kover Gradle this skilljvm-skills/jvm-skills | 139 | — | ~301 | Automated safety check: Pass | Apache-2.0 | |
| Mutation TestingAmplicode/spring-skills | 128 | — | ~669 | Automated safety check: Pass | None | |
| CoverageAmplicode/spring-skills | 128 | — | ~526 | Automated safety check: Pass | None | |
| Test Writing WorkflowiOfficeAI/AionUi | 33k | 1 repos | ~1.2k | Automated safety check: Pass | Apache-2.0 | |
| Evaluate PR Testsdotnet/maui | 23k | — | ~2.9k | Automated safety check: Pass | MIT | |
| Requirementsrizsotto/Bear | 6.5k | — | ~2k | Automated safety check: Pass | GPL-3.0 |
Amplicode/spring-skills
Set up and run mutation testing with PIT (pitest) on a Gradle project, and read the mutation score.
Amplicode/spring-skills
Measure a project's code coverage and report the coverage number.
iOfficeAI/AionUi
Sets the test-writing workflow for the repository: risk-first scenario lists, behavior-focused Vitest tests, a full run before each commit and a coverage target.
dotnet/maui
Reviews the tests added in a pull request for fix coverage, quality, edge cases and test type, and recommends lighter test types where they would do.
rizsotto/Bear
Write, modify, or review a requirement file under docs/requirements -- pick the single owning file, keep the text contract-only, name IDs so they need no explanation, and verify cross-references and…
mbj/mutant
Run mutant, read mutation reports, fix alive mutations, and verify coverage.
jvm-skills/jvm-skills
Bootstrap pitest via the info.solidsoft.pitest Gradle plugin with Kotlin-sane defaults, run mutation tests scoped to changed classes, interpret surviving mutants from mutations.xml, triage…
jvm-skills/jvm-skills
Run Ralph in coverage mode — iteratively write tests for untested classes until coverage targets are met.
jvm-skills/jvm-skills
Run the skill-scout loop — scan the next batch of unscanned JVM-conference rosters for speaker-created AI skills and apply results to the CSV store via the overnight Workflow.
jvm-skills/jvm-skills
Generate a feature spec with user stories directly from conversation context and codebase exploration — no interview needed.
jvm-skills/jvm-skills
Verify UI/UX by running Playwright tests and reviewing screenshots.
jvm-skills/jvm-skills
Write a new Kotlin test, or modernize an existing one, using Kotest matchers and idiomatic Kotlin test style — backticked names, apply/assertSoftly blocks, and existing object mothers and helpers.
Works with
Categories
Run test coverage report using Kover/Gradle and create test improvement plan document. Coverage Kover Gradle is an agent skill from jvm-skills/jvm-skills.
Coverage Kover Gradle fits situations like: tasks that involve Test coverage.
Run `npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a claude-code`. Or copy the skill folder (.junie/skills/coverage-kover-gradle in jvm-skills/jvm-skills) into .claude/skills/coverage-kover-gradle in your project. Claude Code loads it when a task matches its description.
Run `npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a codex`. Or copy the skill folder (.junie/skills/coverage-kover-gradle in jvm-skills/jvm-skills) into .agents/skills/coverage-kover-gradle in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jvm-skills/jvm-skills --skill coverage-kover-gradle -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/coverage-kover-gradle, .gemini/skills/coverage-kover-gradle, .github/skills/coverage-kover-gradle and .opencode/skills/coverage-kover-gradle in your project.
SKILL.md names no scripts, command-line tools or credentials: Coverage Kover Gradle is instructions for the agent only.
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Coverage Kover Gradle is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 301 tokens (SKILL.md is roughly 1.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Coverage Kover Gradle: Mutation Testing (Amplicode/spring-skills, 128 stars), Coverage (Amplicode/spring-skills, 128 stars), Test Writing Workflow (iOfficeAI/AionUi, 33k stars) and Evaluate PR Tests (dotnet/maui, 23k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
jvm-skills (a GitHub organization) maintains it in jvm-skills/jvm-skills, which has 139 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on August 31, 2026.
Source: jvm-skills/jvm-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.