How to use test_should_amend_utf8_post_data method in Playwright Python

Playwright has a built in code generator which will make things easy for you.

Run this command and try it out

npx playwright codegen

The download.path() in playwright is just a random GUID (globally unique identifier). It's designed to validate the download works - not to keep the file.

Playwright is a testing tool and imagine running tests across every major browser on every code change - any downloads would quickly take up a lot of space and it would hack people off if you need to manually clear them out.

Good news is you are very close - If you want to keep the file you just need to give the file a name in the save_as.

instead of this:

   download.save_as(path)

use this:

   download.save_as(download.suggested_filename)

That saves the file in the same location as the script.

page.goto returns the Response of the page where its navigating to. So you can do something like that:

from playwright.sync_api import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch()
    page = browser.new_page()

    response = page.goto("http://whatsmyuseragent.org/")
    assert response.ok

    browser.close()

you can use the channel msedge

robotframework example

New Browser chromium headless=false channel=msedge

New Context viewport={'width': 1920, 'height': 1080}

New Page https://marketsquare.github.io/robotframework-browser/Browser.html

Heroku doesn't support webkit at the time, with other browsers, you can use this buildpack: https://github.com/mxschmitt/heroku-playwright-buildpack/

This here worked for me:

with page.expect_download() as download_info:    
    page.goto("Link")
    page.click('xpath=button')
download = download_info.value
path = download.path()
download.save_as("filename.csv")
print(path)

#---------------------
context.close()
browser.close()

I hope it helps you!

You can use a factory function here to pass the page, and the global_variable. Keep in mind that navigating away from the page from inside the callable will lead to an error. So make sure whatever you are clicking does not change the current URL of the page.

def wrapper(page, global_variable):
    def test(event):
        page.locator('//*[@id="n-currentevents"]/a').click()  # Action before boolean
        if event.url == 'https://en.wikipedia.org/':
            return True
    return test

Then, you can register the above function using page.wait_for_event like this:

page.wait_for_event('request', wrapper(page, global_variable))

Remember: You need to pass functions/callables (not their return values) to page.wait_for_event

as mentioned in https://github.com/microsoft/playwright-python/issues/480

Jupyter notebook uses asyncio event loop, so you should use async api.

from playwright.async_api import async_playwright

playwright = await async_playwright().start()
browser = await playwright.chromium.launch(headless = False)
page = await browser.new_page()

await page.goto("http://whatsmyuseragent.org/")

# await page.screenshot(path="example.png")
# await browser.close()
# await playwright.stop()

If you use sync API, it will throw an Error like this:

from playwright.sync_api import sync_playwright
playwright = sync_playwright().start()

'''
Error: It looks like you are using Playwright Sync API inside the asyncio loop.
Please use the Async API instead.
'''

Try Firefox browser like this:

from playwright.sync_api import sync_playwright

chromium = playwright.firefox
browser = chromium.launch(headless=False)
page = browser.new_page()
page.goto(url)