Borrowing it
Nothing to install: this file belongs to wham/github-brain. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/wham/github-brain/main/.github/skills/testing/SKILL.mdgit clone --depth 1 https://github.com/wham/github-brainWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/wham/github-brain/testing)<a href="https://agentmods.dev/skills/wham/github-brain/testing"><img src="https://agentmods.dev/badge/skills/wham/github-brain/testing/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/wham/github-brain/testing"><img src="https://agentmods.dev/badge/skills/wham/github-brain/testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00035 | $0.00328 |
| Opus 5.5 | $0.00014 | $0.00131 |
| Sonnet 5.5 | $0.00007 | $0.00066 |
| Haiku 4.5 | $0.00003 | $0.00033 |
Grade A, and why
testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Testing
This skill helps you create and run tests for terminal user interface (TUI) applications.
When to use this skill
Use this skill:
- After making ANY code changes to verify they work correctly
- When modifying UI elements, menus, or display logic
- When changing application behavior or adding features
- To ensure existing functionality as specified in
main.mdandREADME.mdis not broken
Starting the application
- Run
scripts/run --testwhere the user would normally rungithub-brainscripts/run --test pullequivalently runsgithub-brain pullscripts/run --test mcpequivalently runsgithub-brain mcp- The
--testflag runsgo vetbefore building to catch issues early
- Ensure
.envfiles is configured to use thegithub-brain-testorganization - Use GitHub MCP to add new issue/PRs/discussions as needed for testing
- Simulate user input: Send key presses, control combinations, or specific commands to the running application.
- Capture and analyze screen output: The testing tool captures the terminal display (or buffer) at specific moments in time.
- Make assertions: Verify that the screen content matches the expected output (e.g., checking if specific text is present at certain coordinates or if the cursor position is correct).
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 30 lines · 35 tokens per session scan A 18f69ca77871
testing is a skill published in the GitHub repository wham/github-brain (78 stars, last pushed 8mo ago), licensed MIT. It adds 35 tokens to every session and 328 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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