Testing Patterns
langchain-ai/skills-benchmarks
Unit testing and integration testing best practices. An agent skill from langchain-ai/skills-benchmarks.
Cross-language testing strategies and patterns. An agent skill from aiskillstore/marketplace.
Install Testing Patterns
$ npx skills add aiskillstore/marketplace --skill testing-patterns -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace testing-patterns --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/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/0xdarkmatter/testing-patterns .claude/skills/testing-patterns && 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-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/testing-patterns into .claude/skills/testing-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-patterns", 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/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/testing-patternsType 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 aiskillstore/marketplace --skill testing-patterns -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace testing-patterns --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/0xdarkmatter/testing-patterns .agents/skills/testing-patterns && 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-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/testing-patterns into .agents/skills/testing-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-patterns", 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 aiskillstore/marketplace --skill testing-patterns -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace testing-patterns --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/0xdarkmatter/testing-patterns .cursor/skills/testing-patterns && 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-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/testing-patterns into .cursor/skills/testing-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-patterns", 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/aiskillstore/marketplace.git --path skills/0xdarkmatter/testing-patterns--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 aiskillstore/marketplace --skill testing-patterns -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace testing-patterns --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/0xdarkmatter/testing-patterns .gemini/skills/testing-patterns && 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-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/testing-patterns into .gemini/skills/testing-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-patterns", 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 aiskillstore/marketplace testing-patternsInstalls 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 aiskillstore/marketplace --skill testing-patterns -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/0xdarkmatter/testing-patterns .github/skills/testing-patterns && 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-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/testing-patterns into .github/skills/testing-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-patterns", 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 aiskillstore/marketplace --skill testing-patterns -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace testing-patterns --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/0xdarkmatter/testing-patterns .opencode/skills/testing-patterns && 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-patterns" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/testing-patterns into .opencode/skills/testing-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-patterns", 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-patterns- GitHub stars
- 430
- Used in
- 1 other repo
- Token cost
- ~1k tokens
- SKILL.md length
- 195 words
- Files
- 7 (incl. scripts, references)
- Skills in repo
- 1,085
- Repo updated
- First seen
- Licence
- None found
At a glance
Cross-language testing strategies and patterns. An agent skill from aiskillstore/marketplace.
- Integration test
- SKILL.md covers The Test Pyramid, Test Types, Test Naming Convention and Arrange-Act-Assert (AAA), plus 6 more sections
- Runs Shell scripts from its folder
- Mocking strategy
What it does
Testing Patterns is an agent skill from aiskillstore/marketplace. Cross-language testing strategies and patterns. Triggers on: test pyramid, unit test, integration test, e2e test, TDD, BDD, test coverage, mocking strategy, test doubles, test isolation.
Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including scripts and reference files (for example `references/ci-testing.md`, `references/mocking-strategies.md` and `references/tdd-workflow.md`). Compatibility notes: Language-agnostic patterns. Framework-specific details in references.
It sits in Testing & QA, covering Test strategy, Unit testing and Integration testing. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Integration test
- Mocking strategy
Example prompts
- “/testing-patterns”
Requirements
- Python 3
- A Bash shell
- Compatibility (from SKILL.md): Language-agnostic patterns. Framework-specific details in references.
- Pre-approved tools (allowed-tools): Read, Write, Bash
What it can do on your machine
Read from SKILL.md and the folder at commit 4ac52da. 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:
ReadWriteBash
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Shell), which the agent can run.
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.
Compatibility
Language-agnostic patterns. Framework-specific details in references.
From compatibility in the SKILL.md frontmatter.
Context cost
Testing Patterns loads about 1k tokens when it runs, and up to ~7.6k if it reads all its reference files. Until then it costs about 51 tokens; SKILL.md has 195 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, Bash
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); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 195 words (~1,048 tokens).
“Universal testing strategies and patterns applicable across languages.”
- name
- testing-patterns
- allowed-tools
- Read, Write, Bash
- compatibility
- Language-agnostic patterns. Framework-specific details in references.
Files
SKILL.md and 6 other files (scripts, references) in skills/0xdarkmatter/testing-patterns of aiskillstore/marketplace.
- SKILL.md
- references/ci-testing.md
- references/mocking-strategies.md
- references/tdd-workflow.md
- references/test-data-patterns.md
- scripts/coverage-check.sh
- skill-report.json
Open the folder on GitHubat commit 4ac52da
Used in 1 other repository
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Testing Patterns 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 Patterns this skillaiskillstore/marketplace | 430 | 1 repos | ~1k | Automated safety check: Notes | None | |
| Testing Patternslangchain-ai/skills-benchmarks | 118 | — | ~447 | Automated safety check: Pass | MIT | |
| Assessing Test Coveragebitwarden/ai-plugins | 154 | — | ~1.1k | Automated safety check: Pass | Custom licence | |
| Test Experteinverne/dotfiles | 121 | — | ~2.3k | Automated safety check: Pass | GPL-3.0 | |
| Recommending Test Layersbitwarden/ai-plugins | 154 | — | ~2.4k | Automated safety check: Pass | Custom licence | |
| Test Automationrevfactory/harness-100 | 1.3k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Testing Patterns
What does Testing Patterns do?
Cross-language testing strategies and patterns. An agent skill from aiskillstore/marketplace. Testing Patterns is an agent skill from aiskillstore/marketplace. Cross-language testing strategies and patterns.
When should I use Testing Patterns?
Testing Patterns fits situations like: integration test; mocking strategy.
How do I install Testing Patterns in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill testing-patterns -a claude-code`. Or copy the skill folder (skills/0xdarkmatter/testing-patterns in aiskillstore/marketplace) into .claude/skills/testing-patterns in your project. Claude Code loads it when a task matches its description.
How do I install Testing Patterns in Codex?
Run `npx skills add aiskillstore/marketplace --skill testing-patterns -a codex`. Or copy the skill folder (skills/0xdarkmatter/testing-patterns in aiskillstore/marketplace) into .agents/skills/testing-patterns in your project. Codex loads it when a task matches its description.
Can I use Testing Patterns 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 aiskillstore/marketplace --skill testing-patterns -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-patterns, .gemini/skills/testing-patterns, .github/skills/testing-patterns and .opencode/skills/testing-patterns in your project.
What does Testing Patterns need to run?
Going by SKILL.md and its folder, Testing Patterns needs a shell for the scripts in its folder. Our summary lists: Python 3; A Bash shell. Its frontmatter pre-approves these tools: Read, Write, Bash. Compatibility (from SKILL.md): Language-agnostic patterns. Framework-specific details in references..
Does Testing Patterns 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 Patterns 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Testing Patterns use?
No licence was found for Testing Patterns or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Testing Patterns use?
About 1k tokens (SKILL.md is roughly 4.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 6.5k tokens, read only when the agent opens those files.
What are the alternatives to Testing Patterns?
Skills that share tags, products or a category with Testing Patterns: Testing Patterns (langchain-ai/skills-benchmarks, 118 stars), Assessing Test Coverage (bitwarden/ai-plugins, 154 stars), Test Expert (einverne/dotfiles, 121 stars) and Recommending Test Layers (bitwarden/ai-plugins, 154 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Testing Patterns?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.