Golang Testing
antoniopaya22/go-rest-template
Go testing patterns including table-driven tests, subtests, benchmarks, fuzzing, and test coverage.
TDD and testing skills for iOS/macOS apps. An agent skill from rshankras/claude-code-apple-skills.
Install Testing
$ npx skills add rshankras/claude-code-apple-skills --skill testing -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install rshankras/claude-code-apple-skills testing --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/rshankras/claude-code-apple-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/testing .claude/skills/testing && 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 "testing" agent skill from https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/testing into .claude/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", 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/rshankras/claude-code-apple-skills/tree/main/skills/testingType 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 rshankras/claude-code-apple-skills --skill testing -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install rshankras/claude-code-apple-skills testing --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rshankras/claude-code-apple-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/testing .agents/skills/testing && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "testing" agent skill from https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/testing into .agents/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", 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 rshankras/claude-code-apple-skills --skill testing -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install rshankras/claude-code-apple-skills testing --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rshankras/claude-code-apple-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/testing .cursor/skills/testing && 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 "testing" agent skill from https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/testing into .cursor/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", 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/rshankras/claude-code-apple-skills.git --path skills/testing--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 rshankras/claude-code-apple-skills --skill testing -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install rshankras/claude-code-apple-skills testing --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rshankras/claude-code-apple-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/testing .gemini/skills/testing && 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 "testing" agent skill from https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/testing into .gemini/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", 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 rshankras/claude-code-apple-skills testingInstalls 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 rshankras/claude-code-apple-skills --skill testing -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/rshankras/claude-code-apple-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/testing .github/skills/testing && 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 "testing" agent skill from https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/testing into .github/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", 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 rshankras/claude-code-apple-skills --skill testing -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install rshankras/claude-code-apple-skills testing --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rshankras/claude-code-apple-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/testing .opencode/skills/testing && 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 "testing" agent skill from https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/testing into .opencode/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", 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.
Facts
- Skill name
testing- GitHub stars
- 781
- Token cost
- ~1.1k tokens
- SKILL.md length
- 518 words
- Files
- 1
- Skills in repo
- 46
- Repo updated
- First seen
- Licence
- MIT
At a glance
TDD and testing skills for iOS/macOS apps. An agent skill from rshankras/claude-code-apple-skills.
- Works in 5 steps: Identify whether user is working on new… → Read the relevant skill's SKILL.md for… → Detect project context (testing… → …
- Test-driven development
- SKILL.md covers When This Skill Activates, Available Skills, How to Use and Relationship to test-generator
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Testing is an agent skill from rshankras/claude-code-apple-skills. TDD and testing skills for iOS/macOS apps. Covers characterization tests, TDD workflows, test contracts, snapshot tests, test infrastructure, and deterministic quality gates (fitness functions, coverage ratchet, mutation testing). Use for test-driven development, adding tests to existing code, or building test infrastructure.
Its SKILL.md is about 1.1k 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-driven development and Test coverage. It works with iOS and macOS. The repository describes itself as: Claude Code skills for Apple platform development (iOS, macOS, iPadOS) — product validation, code generation, App Store optimization, and more. The licence is MIT.
When your agent uses it
- Test-driven development
- Adding tests to existing code
- Building test infrastructure
Example prompts
- “/testing”
Requirements
- Pre-approved tools (allowed-tools): Read, Write, Edit, Glob, Grep, Bash, AskUserQuestion
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Identify whether user is working on new code or existing code
- Read the relevant skill's SKILL.md for detailed workflow
- Detect project context (testing framework, architecture, existing tests)
- Generate tests following the skill's workflow
- Verify tests compile and run
What it can do on your machine
Read from SKILL.md and the folder at commit 9ffb831. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadWriteEditGlobGrepBashAskUserQuestion
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Testing loads about 1.1k tokens when it runs. Until then it costs about 84 tokens; SKILL.md has 518 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.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Write, Edit, Glob, Grep, Bash, AskUserQuestion
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.
SKILL.md
The full file from rshankras/claude-code-apple-skills at commit 9ffb831, republished under its MIT licence (© rshankras). 518 words, ~1,138 tokens.
Download SKILL.mdSave it as
.claude/skills/testing/SKILL.md (or your agent's skills folder).- name
- testing
- description
- TDD and testing skills for iOS/macOS apps. Covers characterization tests, TDD workflows, test contracts, snapshot tests, test infrastructure, and deterministic quality gates (fitness functions, coverage ratchet, mutation testing). Use for test-driven development, adding tests to existing code, or building test infrastructure.
- allowed-tools
- Read, Write, Edit, Glob, Grep, Bash, AskUserQuestion
- last_verified
- 2026-07-24
- review_by
- 2027-06-22
Testing & TDD Skills
Test-driven development workflows and testing infrastructure for Apple platform apps. Works with both new and existing codebases.
When This Skill Activates
Use this skill when the user:
- Wants to do TDD (test-driven development) with AI-generated code
- Needs to add tests before refactoring existing code
- Wants to fix a bug using the red-green-refactor cycle
- Needs test infrastructure (factories, mocks, contracts)
- Asks about snapshot/visual regression testing
- Wants to ensure AI-generated code is correct via tests
- Wants deterministic gates around agent-written code (architecture invariants, coverage floors, mutation audits)
Available Skills
For Existing Codebases
characterization-test-generator/ Capture current behavior of existing code before refactoring. Generates tests that document what code actually does (not what it should do), giving you a safety net for AI-assisted refactoring.
tdd-bug-fix/ Reproduce-first bug fix workflow. Write a failing test that demonstrates the bug, then fix it. Ensures the bug never regresses — critical when AI generates fixes.
tdd-refactor-guard/ Pre-refactor safety checklist. Verifies test coverage exists before allowing AI to touch existing code. Prevents the "refactor without a safety net" problem.
For New Code
tdd-feature/ Red-green-refactor scaffold for new features. Generates the failing test first, then guides implementation to make it pass, then refactors. The core TDD workflow.
test-contract/ Protocol/interface test suites. Define the contract (e.g., "any DataStore must handle empty state, single item, 100 items, and errors"), and it generates a test suite any implementation must pass.
Infrastructure
snapshot-test-setup/ SwiftUI visual regression testing using swift-snapshot-testing. Generates snapshot test boilerplate, configuration, and CI integration.
test-data-factory/ Test fixture factories for your models. Makes writing tests faster by eliminating boilerplate data setup. Supports Builder pattern and static factory methods.
integration-test-scaffold/ Cross-module test harness with mock servers, in-memory stores, and test configuration. For testing networking + persistence + business logic together.
flow-walkthrough/ Drive each user flow in the Simulator (XCUITest + per-step screenshots), audit the navigation graph for dead-ends, and run a human discoverability check.
Show full SKILL.md (208 more words)Show less
Deterministic Gates
fitness-functions/ Architecture fitness functions — tests that enforce a project's hard rules (module import boundaries, offline guarantees, count/copy contracts) from inside its own test target. Turns prose constraints into exit codes.
coverage-ratchet/ Coverage floor that only rises: a committed baseline the app target's line coverage may never drop below, gated by a generated xccov script. Includes an advisory CRAP report (complexity × uncovered).
mutation-testing/ EXPERIMENTAL, advisory-only muter setup scoped to engine targets — surviving mutants reveal covered-but-unasserted code. Never a merge gate; includes the manual deliberate-break fallback.
How to Use
- Identify whether user is working on new code or existing code
- Read the relevant skill's SKILL.md for detailed workflow
- Detect project context (testing framework, architecture, existing tests)
- Generate tests following the skill's workflow
- Verify tests compile and run
Relationship to test-generator
The generators/test-generator/ skill generates test boilerplate (unit, integration, UI tests). These testing skills are complementary — they focus on workflows and methodology (TDD cycle, characterization testing, contracts) rather than just test file generation.
Cross-reference:
- Use
test-generatorfor "add tests to this class" - Use
testing/tdd-featurefor "I want to TDD this new feature" - Use
testing/characterization-test-generatorfor "I need to safely refactor this" - Use
testing/tdd-bug-fixfor "fix this bug and make sure it never comes back"
© rshankras, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/testing of rshankras/claude-code-apple-skills.
Open the folder on GitHubat commit 9ffb831
Compare with similar skills
Testing 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 |
|---|---|---|---|---|---|---|
| Testing this skillrshankras/claude-code-apple-skills | 781 | — | ~1.1k | Automated safety check: Notes | MIT | |
| Golang Testingantoniopaya22/go-rest-template | 172 | 9 repos | ~4.2k | Automated safety check: Pass | None | |
| Macios CI Failure Inspectordotnet/macios | 2.9k | — | ~2.3k | Automated safety check: Pass | Custom licence | |
| Kane CLI Browser TestingLambdaTest/kane-cli | 247 | — | ~8.4k | Automated safety check: Pass | Apache-2.0 | |
| Test Guidelinesgetsentry/sentry-dart | 873 | — | ~3.1k | Automated safety check: Pass | MIT | |
| Testing iOS Codebitwarden/ios | 694 | — | ~1.8k | Automated safety check: Pass | GPL-3.0 |
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Macios CI Failure Inspector
dotnet/macios
Investigate and triage CI failures for dotnet/macios from Azure DevOps build URLs.
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Drives a real browser through the kane-cli tool and designs requirement-linked test suites from a PRD or a plain description, with mobile and cloud-grid runs.
- Official
Test Guidelines
getsentry/sentry-dart
Enforce Sentry Dart/Flutter SDK test conventions for naming, structure, and fixtures.
- Official
Testing iOS Code
bitwarden/ios
Write tests, add test coverage, unit test, or add missing tests for Bitwarden iOS.
- Official
Fix Random CI Test Failure
dotnet/macios
Investigate and fix flaky/random CI test failures in dotnet/macios.
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Categories
Questions about Testing
What does Testing do?
TDD and testing skills for iOS/macOS apps. An agent skill from rshankras/claude-code-apple-skills. Testing is an agent skill from rshankras/claude-code-apple-skills. TDD and testing skills for iOS/macOS apps.
When should I use Testing?
Testing fits situations like: test-driven development; adding tests to existing code; building test infrastructure.
How do I install Testing in Claude Code?
Run `npx skills add rshankras/claude-code-apple-skills --skill testing -a claude-code`. Or copy the skill folder (skills/testing in rshankras/claude-code-apple-skills) into .claude/skills/testing in your project. Claude Code loads it when a task matches its description.
How do I install Testing in Codex?
Run `npx skills add rshankras/claude-code-apple-skills --skill testing -a codex`. Or copy the skill folder (skills/testing in rshankras/claude-code-apple-skills) into .agents/skills/testing in your project. Codex loads it when a task matches its description.
Can I use Testing in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add rshankras/claude-code-apple-skills --skill testing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/testing, .gemini/skills/testing, .github/skills/testing and .opencode/skills/testing in your project.
What does Testing need to run?
SKILL.md names no scripts, command-line tools or credentials: Testing is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit, Glob, Grep, Bash, AskUserQuestion.
Does Testing access the network?
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.
Is Testing safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Testing use?
Testing is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Testing use?
About 1.1k tokens (SKILL.md is roughly 4.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Testing?
Skills that share tags, products or a category with Testing: Golang Testing (antoniopaya22/go-rest-template, 172 stars), Macios CI Failure Inspector (dotnet/macios, 2.9k stars), Kane CLI Browser Testing (LambdaTest/kane-cli, 247 stars) and Test Guidelines (getsentry/sentry-dart, 873 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Testing?
rshankras (a GitHub user) maintains it in rshankras/claude-code-apple-skills, which has 781 GitHub stars. The repository holds 46 skills in this directory. The repository was last updated on July 24, 2026.
Source: rshankras/claude-code-apple-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.