How i can evaluate an ASYNC script in cdp mode?

[jvitormelo]

In the normal mode, I have the self.execute_async_script(script, timeout=None)

But when using CDP I only have the sb.cdp.evaluate(expression)

How I can await a Promise from a script using cdp mode?

[jvitormelo]

And one more question, I was trying to reutilize the same browser and open new tabs, but after activating cdp mode, it will not open a new tab.

Is this intended?

[mdmintz]

See the async example for utilizing await: SeleniumBase/examples/cdp_mode/raw_async.py:

SeleniumBase/examples/cdp_mode/raw_async.py

Lines 8 to 12 in 8317bc8

	async def main():
	driver = await cdp_driver.cdp_util.start_async()
	page = await driver.get("about:blank")
	await page.set_locale("en")
	await page.get("https://www.priceline.com/")

---

You have to stay in the same tab for CDP Mode.
If you want to switch between tabs, you have to reconnect the driver with sb.connect() first.
Here are a few examples that mix CDP Mode with WebDriver to do that:

• SeleniumBase/examples/cdp_mode/raw_easyjet.py

  Line 29 in 8317bc8

  sb.connect()

• SeleniumBase/examples/cdp_mode/raw_priceline.py

  Line 20 in 8317bc8

  sb.connect()

[smugsenkopdn]

For anyone coming here for evaluating async JS in sync pure CDP mode, this is what I found to work:

answer = sb.loop.run_until_complete(
    sb.page.evaluate(
        expression="""Promise.resolve(42)""",
        await_promise=True))

The standard sb.evaluate() doesn't expose CDP's awaitPromise, but sb.page.evaluate() does. Since sb.page.evaluate() returns a coroutine, the async loop sb.evaluate() uses can be used to run the coroutine.
I hope this helps and I didn't miss anything!