ai-regression-testing SKILL.md skillA

ai-regression-testing from affaan-m/ecc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add affaan-m/ecc/ai-regression-testing@git:20260517.ec9ace9

Pins git:20260517.ec9ace9 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
affaan-m/ecc
Path
docs/ja-JP/skills/ai-regression-testing/SKILL.md
Versions recorded
1
Latest version
git:20260517.ec9ace9, committed May 17, 2026
Size
14,450 bytes
Repository stars
299,696
License
MIT

AI 支援開発のためのリグレッションテスト戦略。データベース依存なしのサンドボックスモード API テスト、自動化されたバグチェックワークフロー、同じモデルがコードを書いてレビューする AI のブラインドスポットを捕捉するパターン。.

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

# AI リグレッションテスト

AI 支援開発のために特別に設計されたテストパターン。同じモデルがコードを書いてレビューする場合、自動化されたテストのみが捕捉できる体系的なブラインドスポットが生まれます。

## 起動タイミング

- AI エージェント(Claude Code、Cursor、Codex)が API ルートまたはバックエンドロジックを修正した場合
- バグが見つかり修正された — 再発を防ぐ必要がある
- プロジェクトに DB フリーテストに活用できるサンドボックス/モックモードがある場合
- コード変更後に `/bug-check` または同様のレビューコマンドを実行する場合
- 複数のコードパスが存在する場合(サンドボックス対本番、機能フラグなど)

## コアの問題

AI がコードを書いてその後自分の作業をレビューする場合、両方のステップに同じ前提を持ち込みます。これにより予測可能な障害パターンが生まれます:

```
AI が修正を書く → AI が修正をレビューする → AI が「正しく見える」と言う → バグはまだ存在する
```

**実際の例**(本番で観察された):

```
修正 1: API レスポンスに notification_settings を追加
  → SELECT クエリに追加するのを忘れた
  → AI がレビューして見逃した(同じブラインドスポット)

修正 2: SELECT クエリに追加
  → TypeScript ビルドエラー(生成された型に列がない)
  → AI が修正 1 をレビューしたが SELECT の問題を捕捉できなかった

修正 3: SELECT * に変更
  → 本番パスを修正、サンドボックスパスを忘れた
  → AI がレビューして再び見逃した(4 回目の発生)

修正 4: テストが最初の実行で即座に捕捉 PASS:
```

パターン:**サンドボックス/本番パスの不一致**が AI が導入するリグレッションの第 1 位。

## サンドボックスモード API テスト

AI フレンドリーなアーキテクチャを持つほとんどのプロジェクトにはサンドボックス/モックモードがあります。これが高速な DB フリー API テストの鍵です。

### セットアップ(Vitest + Next.js App Router)

```typescript
// vitest.config.ts
import { defineConfig } from "vitest/config";
import path from "path";

export default defineConfig({
  test: {
    environment: "node",
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add affaan-m/ecc/ai-regression-testing@sha256:1bdb9bac8f24fa7a

The line at the top of this page pins the label git:20260517.ec9ace9, 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_2w524xyysvslzusp.svg)](https://markdownregistry.com/a/art_2w524xyysvslzusp)

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

Versions

The registry has recorded 1 version of this file, committed on May 17, 2026.

versioncommittedcommitsizeaudit
git:20260517.ec9ace9 latest2026-05-17 ec9ace9 14,450 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 (14450 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

affaan-m/ecc · 299,696 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2w524xyysvslzusp
GET https://markdownregistry.com/api/v1/resolve?ref=affaan-m/ecc/ai-regression-testing
GET https://markdownregistry.com/api/v1/blob/1bdb9bac8f24fa7a997382f2ea7e1c3be99e86791d0737a8edcf3129edf0f495

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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