Playwright + Python] series (IX) Playwright call Chrome plugin, even a beginner can get twice the result with half the effort!

Hello, everyone, I'm Six! Today I want to share with you how to use playwight call chrome plugin, object-oriented functional testing and zero-based white, I try to use the vernacular way to give examples to explain, and strive to be able to understand all people, we recommend that you first!favorite, in case you can't find it later. 😎

What is a chrome plugin?

It's the assistant that aids you in your work life and will allow you to get twice the result with half the effort. As an example, the picture below is a plug-in:

practical experience

pass (a bill or inspection etc)playwrightactivate (a plan)chromeBrowser (with interface, with proxy and specified extensions, slow operation), visit the Baidu page and wait for the plugin to load, finally close the browser.

Code Details

Code Beginnings: Key Introductions and Proxy Settings

from time import sleep
from playwright.sync_api import sync_playwright
proxy = {'server': 'act on behalf of sb. in a responsible positionIP'}

from time import sleepThis one.sleepFunctions can be useful. We all know that when you're testing, sometimes you have to wait for a page to load or something, so you can use thesleepYou can then pause the program for a while. For example, if you think you need to wait 5 seconds after an action to make sure the page is stable, you can use thesleep(5)。

from playwright.sync_api import sync_playwrightHere.playwrightis a powerful automated testing tool.sync_playwrightis the key to starting it.

look againproxyThis is the proxy setting. If the test environment needs to access the network through a proxy, you have to set this. If you fill it in wrong, the test could go wrong, as if you were going the wrong way.

Main function: the entry point of the program

def test_Ext():
    with sync_playwright() as p:

here aredef test_Ext():defines our test function.with sync_playwright() as pWhat about.pIt's like the handle we use to operate the browser.

        # Set up the proxy and start the browser with the extension
        extension_path = 'dist' # Replace with the path of your extension
        browser = (
            channel='chrome',
            headless=False,
            proxy=proxy,
            args=[f'--disable-extensions-except={extension_path}', f'--load-extension={extension_path}'],
            slow_mo=3000
        )

extension_path = 'dist'If you don't have an extension, just ignore it for now. Extensions enhance browser functionality, for example, there are extensions that make it easy to get information about a page.

browser = (...)Ri.channel='chrome'designated usechromeBrowser.headless=FalseIndicates that the browser has an interface so that we can see the operation.proxy=proxyIt is to use the proxy set up earlier.argsinner--disable - extensions - except={extension_path}Enable only the specified extensions.--load - extension={extension_path}Load it.slow_mo=3000Let's slow the operation down a bit, stopping each step for 3 seconds, so that we can observe it.

        # Create a new context
        context = browser.new_context()

Creating a new context is like preparing a separate environment for the test that doesn't interfere with other test environments.

        # Create a new page
        page = context.new_page()

Creating a new page is like opening a new tab in your browser.

        # Visit the first web page and handle the pop-up dialog box
        ("")
        sleep(20)

("")Make the page accessible to Baidu.sleep(20)Because Baidu has a lot of content on its pages, wait 20 seconds to make sure it loads completely. If there is a pop-up box.playwrightIt can usually be handled automatically.

        # Close browser
        ()

When you're done testing, you have to close the browser and free up resources or it will eat up your computer's performance.

Problems likely to be encountered

If there's a problem, like a wrong proxy or wrong extension path, it will report an error. We need to investigate according to the error message, and familiarize ourselves with the process a few more times, so that we can easily handle complex automation test code in the future.

effect

put at the end

At this point, on the use of call Chrome plugin method has been shared, interested students can try on their own. If you need the full source code, please reply to "playwight case"Get it, no quotes. I hope everyone is well on their way to mastering it and making progress together. Also welcome to share it with more friends who need it oh!