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claude-testing-kit: Instructions file for Claude Code

CLAUDE.md

claude-testing-kit CLAUDE.md is an instructions file for Claude Code from anhtester/claude-testing-kit. It costs 4,718 tokens per session, scanned C, original, MIT.

A set of instructions for Claude Code test automation, including browser-debugging rules, viewport requirements, and restrictions on Git commands that change local code.

In plain words
What is it for?
Use it when creating or debugging browser tests, especially when the work must be checked in a real headed browser at a desktop viewport before headless CI runs.
Why use it?
It makes UI debugging and test work follow consistent rules, while protecting local edits from being overwritten by commands such as pull, merge, or reset.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Claude Code.

This is anhtester/claude-testing-kit's own configuration. It tells Claude Code how to work on claude-testing-kit itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything claude-testing-kit configures →

not rated 61repo 2mo ago C scan 4,718 tokens original MIT
View source ↗ anhtester/claude-testing-kit anhtester.com
Reuse

Borrowing it

Nothing to install: this file belongs to anhtester/claude-testing-kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/anhtester/claude-testing-kit/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/anhtester/claude-testing-kit

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 4,718 This file is loaded in full into every session.
When invoked 4,718 The same file — it is already loaded in full.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.04718 $0.04718
Opus 5.5 $0.01887 $0.01887
Sonnet 5.5 $0.00944 $0.00944
Haiku 4.5 $0.00472 $0.00472

Measured 1mo ago against content hash 2b0887032cb5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

claude-testing-kit CLAUDE.md scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

rm -rf docs .playwright-mcp task.md .claude/settings.local.json
CLAUDE.md · 322 lines

How it starts

The opening of the file, as written. The whole thing — 322 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE AI - GLOBAL AUTOMATION AGENT RULES

Scope: Áp dụng cho mọi tác vụ Test Automation do Claude (Claude Code) hoạt động trong dự án này. Mục tiêu: Sinh ra test scripts hiệu quả, ổn định – dễ debug – dễ scale – CI friendly.

Git Pull Restriction Rule

  • Tuyệt đối KHÔNG dùng lệnh GIT làm thay đổi trạng thái code (như git pull, git checkout, git merge, git rebase, git reset) để lấy code hoặc thay đổi nhánh.
  • Vì có nhiều trường hợp code trên server chưa được cập nhật, việc pull code về sẽ ghi đè và làm sai toàn bộ phần code đang chỉnh sửa ở máy local.
  • Luôn giữ nguyên trạng thái code local hiện tại để làm việc.
  • Nếu cần file hoặc nội dung mới, hãy yêu cầu người dùng cung cấp thay vì tự ý dùng git.
  • Được phép dùng lệnh read-only: git status, git diff, git log — để kiểm tra trạng thái mà không thay đổi code.

Browser Rules (MANDATORY)

🖥️ Viewport & Mode

  • Tất cả UI debugging phải chạy với desktop viewport: 1920x1080
  • Bắt buộc mở browser thật khi debug (headed mode)
  • Headless mode chỉ được sử dụng sau khi test đã debug PASS trên UI
  • CI/CD pipeline được phép chạy headless mặc định

🔄 Thứ Tự Debug Bắt Buộc (Playwright MCP)

Khi dùng Playwright MCP để debug UI, LUÔN tuân theo thứ tự:

navigate → resize(1920×1080) → wait_for(page_load) → snapshot → interact → screenshot(on_fail)
  • KHÔNG gọi browser_navigate lại nếu đã đang ở đúng trang — tránh reload ngoài ý muốn
  • LUÔN gọi browser_resize(width=1920, height=1080) ngay sau browser_navigate
  • LUÔN verify page đã load xong trước khi lấy snapshot hoặc tương tác

📸 Screenshot & Snapshot

  • Dùng snapshot để phân tích DOM và xác định locator
  • Dùng screenshot để lưu bằng chứng khi test fail hoặc để báo cáo
  • Chụp screenshot ngay khi assertion fail để hỗ trợ truy vết lỗi
  • KHÔNG chụp screenshot tràn lan — chỉ khi cần thiết (fail / milestone quan trọng)

Tools

🛠️ Ưu Tiên Sử Dụng

Read the full file on GitHub · 322 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 322 lines · 4,718 tokens per session scan C 2b0887032cb5

Subscribe to this mod's changes

claude-testing-kit CLAUDE.md is an instructions file published in the GitHub repository anhtester/claude-testing-kit (61 stars, last pushed 2mo ago), licensed MIT. It adds 4,718 tokens to every session, about $0.0189 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Browser automationClaude CodeE2E testingTestingaitestinganhtesterclaudetestingkittest-automationtest-manual
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