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write-tests SKILL.md skillA

write-tests from stoyan-stoyanov/wavefunction is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add stoyan-stoyanov/wavefunction/write-tests@git:20261027.de86d54

Pins git:20261027.de86d54 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: stoyan-stoyanov/wavefunction
Path: .agents/skills/write-tests/SKILL.md
Versions recorded: 1
Latest version: git:20261027.de86d54, committed Oct 27, 2026
Size: 2,899 bytes
Repository stars: 20
License: MIT

Write or change Wavefunction tests that earn their place under the case and time budget, using the existing fixtures. Use when adding a regression test, testing a new behavior, or a test fails for reasons you need to understand.

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

# Write tests

The policy is in [docs/TESTING.md](../../../docs/TESTING.md): a budget of 240 backend and 230 frontend cases, 30 s per backend test, and a time limit for each suite.

## Before adding a test

- **Find the existing test for this behavior.** Tests drive the HTTP API, so search by route or behavior: `rg -l "/fork" backend/tests/`, `rg -l "composer" frontend/src`. Extending a test of the same workflow is often better than a new case.
- **Make a bug fix's test fail first.** Run it against the code without your fix and see it fail for the reason you claim. A test that passes either way is not a regression test.
- **Decide what to assert.** What the user sees, what the API returns, what reaches disk or the model. Not private helpers, markup, CSS or source text.
- **Watch the budget.** Near it, replace a weaker test instead of adding one. Never merge unrelated scenarios to save a case.

## Backend (`backend/tests/`)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add stoyan-stoyanov/wavefunction/write-tests@sha256:08c04b1c38e7c7d0

The line at the top of this page pins the label git:20261027.de86d54, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_acsp2t7llyhlvoso.svg)](https://markdownregistry.com/a/art_acsp2t7llyhlvoso)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 27, 2026.

version	committed	commit	size	audit
git:20261027.de86d54 latest	2026-10-27	de86d54	2,899 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (2899 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

GitHub

stoyan-stoyanov/wavefunction · 20 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_acsp2t7llyhlvoso
GET https://markdownregistry.com/api/v1/resolve?ref=stoyan-stoyanov/wavefunction/write-tests
GET https://markdownregistry.com/api/v1/blob/08c04b1c38e7c7d0a0d47c9baccefa180e03efe3663f9499a75e84327e760a52

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.

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