Emc
aklofas/kicad-happy
EMC pre-compliance risk analysis for KiCad PCB designs — 18 check categories, 44 rule IDs covering ground planes, decoupling, I/O filtering, switching harmonics, clock routing, differential pair…
How to write a good test: behaviour-describing names (shouldreturnerrorwheninputisempty, givenwhenthen), exact-value assertions over truthiness, snapshot and property-based testing…
Install Testing Conventions
$ npx skills add Goldziher/ai-rulez --skill testing-conventions -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Goldziher/ai-rulez testing-conventions --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/Goldziher/ai-rulez.git skills-src && mkdir -p .claude/skills && cp -r skills-src/internal/builtins/universal/testing/skills/testing-conventions .claude/skills/testing-conventions && 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-conventions" agent skill from https://github.com/Goldziher/ai-rulez/tree/main/internal/builtins/universal/testing/skills/testing-conventions into .claude/skills/testing-conventions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-conventions", 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/Goldziher/ai-rulez/tree/main/internal/builtins/universal/testing/skills/testing-conventionsType 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 Goldziher/ai-rulez --skill testing-conventions -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Goldziher/ai-rulez testing-conventions --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Goldziher/ai-rulez.git skills-src && mkdir -p .agents/skills && cp -r skills-src/internal/builtins/universal/testing/skills/testing-conventions .agents/skills/testing-conventions && 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-conventions" agent skill from https://github.com/Goldziher/ai-rulez/tree/main/internal/builtins/universal/testing/skills/testing-conventions into .agents/skills/testing-conventions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-conventions", 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 Goldziher/ai-rulez --skill testing-conventions -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Goldziher/ai-rulez testing-conventions --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Goldziher/ai-rulez.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/internal/builtins/universal/testing/skills/testing-conventions .cursor/skills/testing-conventions && 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-conventions" agent skill from https://github.com/Goldziher/ai-rulez/tree/main/internal/builtins/universal/testing/skills/testing-conventions into .cursor/skills/testing-conventions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-conventions", 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/Goldziher/ai-rulez.git --path internal/builtins/universal/testing/skills/testing-conventions--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 Goldziher/ai-rulez --skill testing-conventions -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Goldziher/ai-rulez testing-conventions --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Goldziher/ai-rulez.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/internal/builtins/universal/testing/skills/testing-conventions .gemini/skills/testing-conventions && 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-conventions" agent skill from https://github.com/Goldziher/ai-rulez/tree/main/internal/builtins/universal/testing/skills/testing-conventions into .gemini/skills/testing-conventions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-conventions", 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 Goldziher/ai-rulez testing-conventionsInstalls 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 Goldziher/ai-rulez --skill testing-conventions -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Goldziher/ai-rulez.git skills-src && mkdir -p .github/skills && cp -r skills-src/internal/builtins/universal/testing/skills/testing-conventions .github/skills/testing-conventions && 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-conventions" agent skill from https://github.com/Goldziher/ai-rulez/tree/main/internal/builtins/universal/testing/skills/testing-conventions into .github/skills/testing-conventions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-conventions", 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 Goldziher/ai-rulez --skill testing-conventions -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Goldziher/ai-rulez testing-conventions --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Goldziher/ai-rulez.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/internal/builtins/universal/testing/skills/testing-conventions .opencode/skills/testing-conventions && 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-conventions" agent skill from https://github.com/Goldziher/ai-rulez/tree/main/internal/builtins/universal/testing/skills/testing-conventions into .opencode/skills/testing-conventions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-conventions", 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-conventions- GitHub stars
- 158
- Token cost
- ~473 tokens
- SKILL.md length
- 184 words
- Files
- 1
- Skills in repo
- 11
- Repo updated
- First seen
- Licence
- MIT
At a glance
How to write a good test: behaviour-describing names (shouldreturnerrorwheninputisempty, givenwhenthen), exact-value assertions over truthiness, snapshot and property-based testing…
- Tasks that involve Test generation
- SKILL.md covers Naming, Assertions, Independence and Anti-patterns
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Testing Conventions is an agent skill from Goldziher/ai-rulez. How to write a good test: behaviour-describing names (shouldreturnerrorwheninputisempty, givenwhenthen), exact-value assertions over truthiness, snapshot and property-based testing, order-independent and idempotent tests with no shared mutable state, and the anti-patterns (testing mocks, test-only production methods, mocking what you don't own, asserting implementation details). Load when writing or reviewing a test file, naming test cases, choosing assertions, or diagnosing a flaky or always-passing test.
Its SKILL.md is about 470 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 generation. The repository describes itself as: One source of truth for AI assistant configs: 14 built-in presets (Claude, Cursor, Copilot, Codex, Gemini, Xum, …), full-parity custom presets, and distributable plugin bundles… The licence is MIT.
When your agent uses it
- Tasks that involve Test generation
Example prompts
- “/testing-conventions”
What it can do on your machine
Read from SKILL.md and the folder at commit 01417cf. It shows what the files ask for, not the result of running them.
Tool permissions
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.
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 Conventions loads about 473 tokens when it runs. Until then it costs about 136 tokens; SKILL.md has 184 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 passed
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.
SKILL.md
The full file from Goldziher/ai-rulez at commit 01417cf, republished under its MIT licence (© Goldziher). 184 words, ~473 tokens.
Download SKILL.mdSave it as
.claude/skills/testing-conventions/SKILL.md (or your agent's skills folder).- name
- testing-conventions
- description
- How to write a good test: behaviour-describing names (`should_return_error_when_input_is_empty`, `given_when_then`), exact-value assertions over truthiness, snapshot and property-based testing, order-independent and idempotent tests with no shared mutable state, and the anti-patterns (testing mocks, test-only production methods, mocking what you don't own, asserting implementation details). Load when writing or reviewing a test file, naming test cases, choosing assertions, or diagnosing a flaky or always-passing test.
Naming
Name tests to describe behaviour: should_return_error_when_input_is_empty, test_parse_handles_nested_objects. Use describe/it blocks for grouping where the language supports them. Follow given_when_then or should_when. Test names are specifications — a reader should understand the expected behaviour without reading the body.
Assertions
Assert exact expected values, not truthiness (assert result == 42, not assert result). Use snapshot testing for complex structured output and property-based testing for functions with wide input ranges. Include descriptive failure messages. Always test error paths and edge cases, not just the happy path.
Independence
Tests must be independent and idempotent — runnable in any order, in parallel. No shared mutable state between tests. Use factories or fixtures for setup. Clean up created resources (files, DB rows, env vars) after each test. Never rely on execution order.
Anti-patterns
- Do not test mock behaviour instead of real behaviour.
- Do not add test-only methods to production code.
- Do not mock what you don't own — wrap it and test the wrapper.
- Do not test implementation details — test observable behaviour.
- Do not write tests that pass when the code is broken. If a test never fails, it is not testing anything.
© Goldziher, 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 internal/builtins/universal/testing/skills/testing-conventions of Goldziher/ai-rulez.
Open the folder on GitHubat commit 01417cf
Compare with similar skills
Testing Conventions 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 Conventions this skillGoldziher/ai-rulez | 158 | — | ~473 | Automated safety check: Pass | MIT | |
| Emcaklofas/kicad-happy | 1.4k | 1 repos | ~2.8k | Automated safety check: Pass | MIT | |
| Swig Testswig/swig | 6.3k | — | ~2.3k | Automated safety check: Pass | Custom licence | |
| Generate Test Cases342164796/generate-test-cases | 119 | 1 repos | ~2.9k | Automated safety check: Pass | None | |
| Verify Cc Safety Netkenryu42/cc-safety-net | 1.6k | — | ~2k | Automated safety check: Pass | MIT | |
| Wioworkersio/skills | 190 | — | ~5.8k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Testing Conventions
What does Testing Conventions do?
How to write a good test: behaviour-describing names (shouldreturnerrorwheninputisempty, givenwhenthen), exact-value assertions over truthiness, snapshot and property-based testing…. Testing Conventions is an agent skill from Goldziher/ai-rulez. How to write a good test: behaviour-describing names (shouldreturnerrorwheninputisempty, givenwhenthen), exact-value assertions over truthiness, snapshot and property-based testing, order-independent and idempotent tests with no shared mutable state, and the anti-patterns (testing mocks, test-only production methods, mocking what you don't own, asserting implementation details).
When should I use Testing Conventions?
Testing Conventions fits situations like: tasks that involve Test generation.
How do I install Testing Conventions in Claude Code?
Run `npx skills add Goldziher/ai-rulez --skill testing-conventions -a claude-code`. Or copy the skill folder (internal/builtins/universal/testing/skills/testing-conventions in Goldziher/ai-rulez) into .claude/skills/testing-conventions in your project. Claude Code loads it when a task matches its description.
How do I install Testing Conventions in Codex?
Run `npx skills add Goldziher/ai-rulez --skill testing-conventions -a codex`. Or copy the skill folder (internal/builtins/universal/testing/skills/testing-conventions in Goldziher/ai-rulez) into .agents/skills/testing-conventions in your project. Codex loads it when a task matches its description.
Can I use Testing Conventions 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 Goldziher/ai-rulez --skill testing-conventions -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-conventions, .gemini/skills/testing-conventions, .github/skills/testing-conventions and .opencode/skills/testing-conventions in your project.
What does Testing Conventions need to run?
SKILL.md names no scripts, command-line tools or credentials: Testing Conventions is instructions for the agent only.
Does Testing Conventions 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 Conventions safe to install?
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.
What licence does Testing Conventions use?
Testing Conventions 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 Conventions use?
About 473 tokens (SKILL.md is roughly 1.9k 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 Conventions?
Skills that share tags, products or a category with Testing Conventions: Emc (aklofas/kicad-happy, 1.4k stars), Swig Test (swig/swig, 6.3k stars), Generate Test Cases (342164796/generate-test-cases, 119 stars) and Verify Cc Safety Net (kenryu42/cc-safety-net, 1.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Testing Conventions?
Goldziher (a GitHub user) maintains it in Goldziher/ai-rulez, which has 158 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on October 8, 2026.
Source: Goldziher/ai-rulez on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.