testing SKILL.md skillA
testing from byerlikaya/claude-starter-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add byerlikaya/claude-starter-kit/testing@git:20260924.a457823Pins git:20260924.a457823 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- byerlikaya/claude-starter-kit
- Path
plugin/skills/testing/SKILL.md- Versions recorded
- 8
- Latest version
- git:20260924.a457823, committed Sep 24, 2026
- First version recorded
- Jul 10, 2026
- Size
- 3,133 bytes
- Repository stars
- 26
- License
- MIT
The how of testing: pyramid, AAA, isolation, risk coverage, determinism. Guarantees the DoD's "tests are green". crew-test-expert applies it. Use when writing or changing tests, or when a suite is flaky, slow or green for the wrong reason.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Testing Discipline <!-- routing-eval reads the next line; why it sits in the body: AGENT_TEMPLATE.md --> Trigger phrases: "write a test", "run the tests", "coverage", "are the tests green", "unit test", "integration test", "tests pass locally", "flaky test", "test is flaky" Goal: **behavior correctness** — test real behavior without breaking product code just to make a test pass. ## Principles - **Pyramid:** many unit, fewer integration, few end-to-end (e2e). Limit e2e to critical flows. - **AAA:** Arrange-Act-Assert; **one test = one behavior**. - **Isolation & determinism:** external dependencies are mocked/faked; time and randomness are fixed; test order is independent. - **Risk-coverage:** risk, not metrics. Critical path + **boundary** + **negative** + **authorization (IDOR/404)** scenarios. - **Naming:** `what_it_tests_under_which_condition_what_it_expects` — on failure it is clear what broke. - **Red-green:** first a failing test, then the implementation. ## Watch out - **Flaky = bug:** an occasionally failing test is not tolerated; it is fixed at the root. - In snapshot/golden-file tests, avoid needless brittleness (assert only the meaningful output). …
Read the whole file at its exact version.
How to install
mdr add byerlikaya/claude-starter-kit/testing@sha256:3c014ee09524ee5aThe line at the top of this page pins the label git:20260924.a457823, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_amxrwseizkl4ze4h)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Jul 10, 2026 and Sep 24, 2026, about one every 11 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260924.a457823 latest | 2026-09-24 | a457823 | 3,133 B | A | view · diff |
| git:20260924.ccb2bc9 | 2026-09-24 | ccb2bc9 | 3,327 B | A | view · diff |
| git:20260924.bd59e95 | 2026-09-24 | bd59e95 | 3,327 B | A | view · diff |
| git:20260826.c9e7ffc | 2026-08-26 | c9e7ffc | 3,326 B | A | view · diff |
| git:20260826.2310e7b | 2026-08-26 | 2310e7b | 3,273 B | A | view · diff |
| git:20260730.0bf7183 | 2026-07-30 | 0bf7183 | 1,760 B | A | view · diff |
| git:20260728.3499107 | 2026-07-28 | 3499107 | 1,481 B | A | view · diff |
| git:20260710.7fdf9e2 | 2026-07-10 | 7fdf9e2 | 1,384 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3133 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
byerlikaya/claude-starter-kit · 26 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_amxrwseizkl4ze4h GET https://markdownregistry.com/api/v1/resolve?ref=byerlikaya/claude-starter-kit/testing GET https://markdownregistry.com/api/v1/blob/3c014ee09524ee5af33f300e94862ddb833518c804484df6fcf1648ffdd24e71
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from byerlikaya/claude-starter-kit
Every file in byerlikaya/claude-starter-kit