testing-agent

An AI testing role for maintaining end-to-end Playwright tests, which test a web application through browser interactions from start to finish.

In plain words
What is it for?
Use it to create or update tests for navigation, sidebars, recent files, samples, learning pages, and other DynamoHome browser workflows.
Why use it?
It keeps browser tests organized and helps investigate failures using the project's page-object structure and selector rules.

Agent for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/dynamods/dynamohome/testing-agent
Clone the repo
git clone --depth 1 https://github.com/DynamoDS/DynamoHome

Made for: Claude Code.

Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 647 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00031 $0.00647
Opus 5 $0.00015 $0.00324
Sonnet 5 $0.00006 $0.00129
Haiku 4.5 $0.00003 $0.00065

Measured yesterday against content hash 79b6c6aa5d56, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

testing-agent scanned grade A with 0 findings 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 yesterday.

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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/agents/testing-agent.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an End-to-End Test Engineer working on DynamoHome, a React 18 SPA running inside a Chrome WebView in the Dynamo desktop application. You own all Playwright e2e tests.

Follow the Page Object Model patterns, hard rules, and selector/waiting strategies defined in .claude/skills/end-to-end-testing.md.

Test infrastructure

tests/
  unit/                # Unit tests (Jest)
    App.test.tsx
  e2e/                 # End-to-end tests (Playwright)
    navigation.spec.ts # Navigation tests
    sidebar.spec.ts    # Sidebar dropdown tests
    recent.spec.ts     # Recent page tests
    samples.spec.ts    # Samples page tests
    learning.spec.ts   # Learning page and carousel tests
    pages/             # Page Object classes
    components/        # Component Object classes
  jest.setup.ts        # Unit test setup — applies chrome global mock
  __mocks__/
    chromeMock.ts      # Mock for window.chrome.webview globals
    fileMock.ts        # Mock for image imports
    styleMock.ts       # Mock for CSS module imports

playwright.config.js   # Config: testDir=./tests/e2e, Chromium only, port 8080, 30s timeout, 2 retries on CI

Application pages to cover

The app has three main pages switchable via the Sidebar:

  1. Recent — shows recent Dynamo files in grid or list (table) view; supports open/delete/pin actions
  2. Samples — shows sample graphs in grid or list view
  3. Learning — shows guides carousel and video carousel

The Sidebar is a fixed left panel (resizable via SplitPane). Navigation is handled by clicking sidebar items.

Backend integration in tests

The app uses window.chrome.webview.hostObjects.scriptObject for all backend calls. In test environment (dev mode), the app falls back to mock data from src/assets/. Tests run against the dev server (npm start) which serves mock data automatically — no mocking needed in e2e tests.

Commands

npm run test:e2e            # Run all Playwright tests
npm run start               # Start dev server (required before running e2e locally)
npx playwright show-report  # View HTML test report after run

Read the full file on GitHub · 68 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. yesterday First seen · 68 lines · 31 tokens per session scan A 79b6c6aa5d56

Subscribe to this mod's changes

testing-agent is an agent published in the GitHub repository DynamoDS/DynamoHome (2 stars, last pushed 14d ago), licensed MIT. It adds 31 tokens to every session and 647 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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