webapp-testing

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

Updated May 22, 2026
One-click install
npx skills add https://github.com/viniciuscs84/sdd-toolkit --skill webapp-testing-viniciuscs84
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: webapp-testing
Source: https://github.com/viniciuscs84/sdd-toolkit/tree/main/skills/webapp-testing
Command: npx skills add https://github.com/viniciuscs84/sdd-toolkit --skill webapp-testing-viniciuscs84

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 programmatically. ## Core Features & Use Cases - Server Lifecycle Management: The with_server.py helper starts one or more servers (e.g., backend plus frontend), waits for readiness on specified ports, runs your automation, and cleans up afterward. - Reconnaissance-Then-Action Pattern: Navigate to a page, wait for networkidle, inspect the rendered DOM or take screenshots, then act on discovered selectors. - Example Scripts: Ready-made patterns for element discovery, static HTML automation via file:// URLs, and console log capture. - Use Case: You have a React frontend on port 5173 and a Python backend on port 3000. Use the helper to launch both servers, then run a Playwright script that logs in, clicks through the dashboard, and captures screenshots and console errors. ## Quick Start Ask the AI to test your local web app by starting the dev server with the with_server.py helper and writing a Playwright script that navigates to the page, waits for networkidle, and verifies the expected elements appear.

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 the networkidle load state before interacting with elements. Use the with_server.py helper to start your dev server automatically before the script runs.

How do I run Playwright tests that need multiple servers running?

Use the with_server.py helper with repeated --server and --port flags for each server, followed by -- and your automation command. It starts each server, waits for its port to accept connections, runs your script, then terminates all servers.

Why does Playwright find no elements on my dynamic webapp page?

Dynamic apps render content via JavaScript after initial page load, so inspecting the DOM too early returns incomplete results. Always call page.wait_for_load_state('networkidle') before querying selectors or taking screenshots.

Can Playwright automate static HTML files without a server?

Yes, Playwright can open local HTML files directly using file:// URLs built from the absolute file path. The static_html_automation.py example shows navigation, form filling, clicking, and screenshot capture without any server.

How do I capture browser console logs during Playwright automation?

Register a handler with page.on('console', handler) before navigating, and append each message's type and text to a list. After the session, write the collected messages to a log file for review.