webapp-testing

Automate Playwright UI testing for a local web app by driving deterministic reconnaissance flows that start servers, wait for network stability, inspect rendered DOM, and verify interactions. Use a Python setup with a server readiness helper script to manage lifecycle.

Playwright scripts fail to find selectors when the DOM is not fully rendered. You must call wait_for_load_state('networkidle') to ensure the page reaches a stable state before attempting selector discovery or UI interaction.

Start a local server and run Playwright automation by using a helper script like scripts/with_server.py. It starts your app, waits until servers are reachable, executes your UI verification script, and then cleans up the server lifecycle automatically.

Yes, you can take screenshots and inspect the DOM with Playwright by following a reconnaissance-first debugging pattern. After waiting for networkidle stability, the automation captures the rendered state and validates UI behavior before proceeding with interactions.

Yes, you need a Python Playwright setup to test local web applications using this approach. The automation relies on Python scripts to drive browser actions, manage local server lifecycles, and synchronize page stability before inspecting rendered DOM elements.