[Bug]: Can't capture browser error logs with page.on("pageerror") or page.on("console")

[msu11y]

[Bug]: Can't capture browser error logs with page.on("pageerror") or page.on("console")

[msu11y]

I figured out the solution, it was not a bug. I had to put the event handler before going to the page.

       # build the URL of our page
        url = f'http://localhost:{local_port}/{app}/{str(object.slug)}'
        print(" PAGE URL: ", url)

        # append any uncaught javascript errors in browser error logs to list
        uncaught_errors = []
        page.on("pageerror", lambda exc: uncaught_errors.append(exc))

        # append any javascript errors in browser error logs to list
        error_logs = []
        page.on("console", lambda msg: error_logs.append(msg.text) if msg.type == "error" else None)

        # go to page once there are no more than 2 network connections for at least 500 milliseconds
        page.goto(url, wait_until="networkidle")

        # assert that 'Page Not Found' is not in title tag of DOM
        title = page.title()
        assert 'Page Not Found' not in title, '\n\n 404 error!'

        # assert that no uncaught javascript errors are in browser error logs
        assert len(uncaught_errors) == 0, f"The following uncaught JavaScript errors were reported for {url}:\n{uncaught_errors}"

        # assert that no javascript errors are in browser error logs
        assert len(error_logs) == 0, f"The following JavaScript errors were reported for {url}:\n{error_logs}"
`