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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.
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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.
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.
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