webapp-testing

Automate browser testing of local web applications using Python Playwright scripts.

Updated Apr 16, 2026
One-click install
npx skills add https://github.com/quangtuyennguyen/loan-application-workflow --skill webapp-testing-quangtuyennguyen
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: webapp-testing
Source: https://github.com/quangtuyennguyen/loan-application-workflow/tree/main/.claude/skills/webapp-testing
Command: npx skills add https://github.com/quangtuyennguyen/loan-application-workflow --skill webapp-testing-quangtuyennguyen

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires playwright, and includes scripts (resource) components.

What problem does it solve? Testing local web applications manually is slow and error-prone, especially when verifying frontend behavior, debugging UI issues, or capturing browser state. This Skill automates browser interactions with Playwright so you can validate functionality, inspect rendered DOM, and capture screenshots or console logs without manual clicking. ## Core Features & Use Cases - Server Lifecycle Management: The with_server.py helper starts one or more servers (frontend and backend), waits for readiness, runs your automation, and cleans up afterward. - Reconnaissance-Then-Action Pattern: Navigate to a page, wait for network idle, inspect the rendered DOM, then act on discovered selectors for reliable automation of dynamic apps. - Browser Inspection: Capture full-page screenshots, console logs, and element inventories (buttons, links, inputs) for debugging. - Use Case: Verify a loan application form end-to-end by starting the Next.js frontend and Express backend together, filling the form programmatically, submitting it, and screenshotting the result page. ## Quick Start Ask the AI to test your local web app with Playwright, for example: start my dev server and verify the form submission flow works end to end.

Frequently Asked Questions about webapp-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test a local web application with Playwright in Python?▼

Write a Python script using sync_playwright, launch Chromium in headless mode, navigate to your localhost URL, and wait for networkidle before interacting. Use the with_server.py helper to start your dev server automatically before the script runs.

How to run Playwright tests when my app needs both frontend and backend servers?▼

Use the with_server.py helper with multiple --server and --port flags, one pair per server. It starts each server, waits for its port to accept connections, runs your automation command, then terminates all servers cleanly.

Why does Playwright find no elements on my dynamic web page?▼

Dynamic apps render content via JavaScript after initial load, so inspecting the DOM too early returns nothing. Always call page.wait_for_load_state('networkidle') before querying selectors or taking screenshots.

Can Playwright capture browser console logs during automation?▼

Yes, register a handler with page.on('console', handler) before navigating. Each console message is passed to your callback, where you can print or save it to a log file for later debugging.

Can I use Playwright to test static HTML files without a server?▼

Yes, navigate to a file:// URL pointing to the absolute path of your HTML file. You can then fill forms, click buttons, and take screenshots exactly as you would against a served page.