cyberneticlibrary

Test web apps with Playwright

webapp-testingskillsetup L20
Sheshiyer/skill-clusters
What it does

Interact with and test local web applications using Playwright

Best for

Verify frontend functionality and debug UI behavior in a real browser before integration tests

Inputs
  • · Target URL or localhost:port
  • · optional: form data, click actions, selectors
Outputs
  • · Screenshots
  • · DOM inspection
  • · Browser console logs
  • · Network request logs
Requires
  • · Playwright (Python)
  • · with_server.py helper script for server lifecycle
Preconditions

Python 3.x; Playwright installed; target app running or with_server.py managing it

Failure modes

Selector not found; page not loaded (missing networkidle wait); async JS not rendered yet

Trust signals
  • · with_server.py helper automates server lifecycle
  • · Includes reconnaissance-then-action pattern
  • · Warns against common pitfall (inspect before networkidle wait)