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How to use test_page_event_should_have_an_opener method in Playwright Python

Best Python code snippet using playwright-python

test_browsercontext.py

Source:test_browsercontext.py

...533    async with context.expect_page() as popup_info:534        await new_page.evaluate("window.open('about:blank')")535    popup = await popup_info.value536    assert popup.url == "about:blank"537async def test_page_event_should_have_an_opener(context, server):538    page = await context.new_page()539    await page.goto(server.EMPTY_PAGE)540    async with context.expect_page() as page_info:541        await page.goto(server.PREFIX + "/popup/window-open.html"),542    popup = await page_info.value543    assert popup.url == server.PREFIX + "/popup/popup.html"544    assert await popup.opener() == page545    assert await page.opener() is None546async def test_page_event_should_fire_page_lifecycle_events(context, server):547    events = []548    def handle_page(page):549        events.append("CREATED: " + page.url)550        page.on("close", lambda: events.append("DESTROYED: " + page.url))551    context.on("page", handle_page)...

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
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Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
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