Flaky Test Risk Check SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

Flaky Test Risk Check from s977043/river-review is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add s977043/river-review/Flaky Test Risk Check@v0.1.0

Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
s977043/river-review
Path
plugin-dist/river-review/skills/downstream/flaky-test/SKILL.md
Versions recorded
1
Latest version
v0.1.0, committed Oct 25, 2026
Size
3,727 bytes
Repository stars
7
License
MIT

Detects patterns that make tests flaky and proposes stabilization steps.

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

## Pattern declaration

Primary pattern: Reviewer
Secondary patterns: Inversion
Why: Flakyテストリスク検出はチェックリスト型評価が主だが、テストファイルが差分に含まれない場合は実行を止める必要がある。

## Rule / ルール

- テストを決定的にし、実行順や環境依存を避ける。
- タイミング依存(sleep/timeout)、乱数、時刻依存のまま放置しない。
- ネットワークや外部サービス呼び出しはモック/スタブに置き換える。

## Heuristics / 判定の手がかり

- `setTimeout`/`sleep`/`waitFor` で待ち時間を固定している。
- `Math.random()`/`Date.now()`/`new Date()` をシード・固定値なしで使っている。
- ネットワーク/DB/ファイル I/O への直接依存がある(モックが無い)。
- 並列実行で共有状態を操作している、またはテスト順序に依存している。
- 未 `await` の Promise が残っている、cleanup が `afterEach` で行われていない。

## Good / Bad Examples

- Good: `vi.useFakeTimers(); jest.runAllTimers();` でタイマーを制御。
- Good: `Math.random = () => 0.42;` などで乱数を固定。
- Bad: `await sleep(1000);` に依存するテスト。
- Bad: 実際の外部 API を呼ぶ統合テストをユニットテストに混在させる。

## Actions / 改善案

- タイマー/日時/乱数をモックし、シードを固定する。
- ネットワーク・DB・外部サービスをモック/スタブ化し、リトライやバックオフをテストしない。
- 共有状態を隔離し、`beforeEach`/`afterEach` でクリーンアップする。
- 並列実行に耐えるようテストデータを分離し、副作用を最小化する。

## Non-goals / 扱わないこと

- E2E/負荷試験の設計や実行環境のチューニング。
- テストフレームワークの全面移行。
- 監視/アラートの設計。

## Pre-execution Gate / 実行前ゲート

このスキルは以下の条件がすべて満たされない限り`NO_REVIEW`を返す。

- [ ] 差分にテストファイル(`*.test.*`, `*.spec.*`, `tests/**/*`)の変更が含まれている
- [ ] 差分にテストの実行内容に影響する変更がある(コメントや説明文のみの変更ではない)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add s977043/river-review/Flaky Test Risk Check@sha256:819a73bda85087c3

The line at the top of this page pins the label v0.1.0, 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 badge

[![mdr](https://markdownregistry.com/badge/art_o7o4hrep7kdgbdqo.svg)](https://markdownregistry.com/a/art_o7o4hrep7kdgbdqo)

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

Versions

The registry has recorded 1 version of this file, committed on Oct 25, 2026.

versioncommittedcommitsizeaudit
v0.1.0 latest2026-10-25 aac3ee8 3,727 BA 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 (3727 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

s977043/river-review · 7 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_o7o4hrep7kdgbdqo
GET https://markdownregistry.com/api/v1/resolve?ref=s977043/river-review/Flaky Test Risk Check
GET https://markdownregistry.com/api/v1/blob/819a73bda85087c374841a2c9fbfcd2a8166edc551194db926b4f12dae5b5dab

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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Every file in s977043/river-review

Other files named Flaky Test Risk Check

Flaky Test Risk Check SKILL.md skill
s977043/river-review · skills/downstream/flaky-test/SKILL.md · Detects patterns that make tests flaky and proposes stabilization steps.
v0.1.0 · audit A · 7 stars

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