Function evaluate

tests/async/test_popup.py:345–354

()

    evaluate_task: Optional[asyncio.Future] = None

    async def evaluate() -> None:
        nonlocal evaluate_task
        evaluate_task = asyncio.create_task(
            page.evaluate(
                """() => {
                const win = window.open('')
                win.alert('hello')
            }"""
            )
        )

    [popup, dialog, _] = await asyncio.gather(
        page.wait_for_event("popup"), context.wait_for_event("dialog"), evaluate()