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How to use to_have_js_property method in Playwright Python

Best Python code snippet using playwright-python

_assertions.py

Source:_assertions.py

...259        timeout: float = None,260    ) -> None:261        __tracebackhide__ = True262        await self._not.to_have_id(id, timeout)263    async def to_have_js_property(264        self,265        name: str,266        value: Any,267        timeout: float = None,268    ) -> None:269        __tracebackhide__ = True270        await self._expect_impl(271            "to.have.property",272            FrameExpectOptions(273                expressionArg=name, expectedValue=value, timeout=timeout274            ),275            value,276            "Locator expected to have JS Property",277        )278    async def not_to_have_js_property(279        self,280        name: str,281        value: Any,282        timeout: float = None,283    ) -> None:284        __tracebackhide__ = True285        await self._not.to_have_js_property(name, value, timeout)286    async def to_have_value(287        self,288        value: Union[str, Pattern],289        timeout: float = None,290    ) -> None:291        __tracebackhide__ = True292        expected_text = to_expected_text_values([value])293        await self._expect_impl(294            "to.have.value",295            FrameExpectOptions(expectedText=expected_text, timeout=timeout),296            value,297            "Locator expected to have Value",298        )299    async def not_to_have_value(...

test_assertions.py

Source:test_assertions.py

...121    expect(page.locator("div.foobar")).to_have_id("kek")122    expect(page.locator("div.foobar")).not_to_have_id("top", timeout=100)123    with pytest.raises(AssertionError):124        expect(page.locator("div.foobar")).to_have_id("top", timeout=100)125def test_assertions_locator_to_have_js_property(page: Page, server: Server) -> None:126    page.goto(server.EMPTY_PAGE)127    page.set_content("<div></div>")128    page.eval_on_selector(129        "div", "e => e.foo = { a: 1, b: 'string', c: new Date(1627503992000) }"130    )131    expect(page.locator("div")).to_have_js_property(132        "foo",133        {"a": 1, "b": "string", "c": datetime.utcfromtimestamp(1627503992000 / 1000)},134    )135def test_assertions_locator_to_have_text(page: Page, server: Server) -> None:136    page.goto(server.EMPTY_PAGE)137    page.set_content("<div id=foobar>kek</div>")138    expect(page.locator("div#foobar")).to_have_text("kek")139    expect(page.locator("div#foobar")).not_to_have_text("top", timeout=100)140    page.set_content("<div>Text    \n1</div><div>Text   2a</div>")141    # Should only normalize whitespace in the first item.142    expect(page.locator("div")).to_have_text(["Text  1", re.compile(r"Text   \d+a")])143def test_assertions_locator_to_have_value(page: Page, server: Server) -> None:144    page.goto(server.EMPTY_PAGE)145    page.set_content("<input type=text id=foo>")...

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.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
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.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.