test-fixture-realism SKILL.md skillA
test-fixture-realism from iamakbarsha1/whetstone is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add iamakbarsha1/whetstone/test-fixture-realism@git:20261019.b3a119bPins git:20261019.b3a119b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- iamakbarsha1/whetstone
- Path
skills/test-fixture-realism/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261019.b3a119b, committed Oct 19, 2026
- First version recorded
- Aug 9, 2026
- Size
- 6,529 bytes
- Repository stars
- 4
- License
- CC-BY-4.0
Use when writing tests against a shared store or with fabricated fixtures — a test only proves something if its fixtures mirror data reality and its assertions can't pass trivially. Covers asserting on rows you created (not aggregate counts), real referential integrity, seeded randomness and pinned time, fail-closed guard fixtures, and mocks that quietly load the real module. Triggers on "test fixtures", "seed data", "test DB", "factory", "mock returns", "flaky test", "assert count…
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
# Test-Fixture Realism **Type:** Open-source — client-agnostic methodology, no project-specific detail. **Created by akbarsha — https://github.com/iamakbarsha1** Distilled from a recurring cluster of test failures where the fixtures didn't match data reality or the assertion could pass without the code working. **Licence:** Released under CC BY 4.0 — share and adapt for any purpose with credit. Full text: `LICENSE` at the repository root. **Feedback & Support:** If a rule here proves wrong or needs sharpening, open an issue on the repository or contact the author at the profile link above. If the problem is the agent not following a rule below rather than the rule itself, that's an execution failure — acknowledge and correct it. ## The core rule A test proves something only if two things hold: its fixtures resemble the data the code meets in production, and its assertions cannot pass unless the code actually worked. Fabricated fixtures that skip referential integrity, aggregate assertions over a shared store, unseeded randomness, and mocks that echo the input all produce green tests that verify nothing. Build fixtures that …
Read the whole file at its exact version.
How to install
mdr add iamakbarsha1/whetstone/test-fixture-realism@sha256:bd4fdcc126baabc9The line at the top of this page pins the label git:20261019.b3a119b, 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_lwz5lt6zqynxvmz2)
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Versions
The registry has recorded 5 versions of this file, between Aug 9, 2026 and Oct 19, 2026, about one every 18 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261019.b3a119b latest | 2026-10-19 | b3a119b | 6,529 B | A | view · diff |
| git:20260815.a481f85 | 2026-08-15 | a481f85 | 5,668 B | A | view · diff |
| git:20260815.0363531 | 2026-08-15 | 0363531 | 4,665 B | A | view · diff |
| git:20260815.61aa8b5 | 2026-08-15 | 61aa8b5 | 4,651 B | A | view · diff |
| git:20260809.d424dee | 2026-08-09 | d424dee | 4,448 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 (6529 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
iamakbarsha1/whetstone · 4 stars · license CC-BY-4.0 · pushed 2026-10-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lwz5lt6zqynxvmz2 GET https://markdownregistry.com/api/v1/resolve?ref=iamakbarsha1/whetstone/test-fixture-realism GET https://markdownregistry.com/api/v1/blob/bd4fdcc126baabc98aec958b346a5cc29b741a1448b390e284765856c8456c6e
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.