How to use not_to_contain_text method in Playwright Python

Best Python code snippet using playwright-python

_assertions.py

Source: _assertions.py Github

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...135 ),136 expected,137 "Locator expected to contain text",138 )139 async def not_to_contain_text(140 self,141 expected: Union[List[Union[Pattern, str]], Pattern, str],142 use_inner_text: bool = None,143 timeout: float = None,144 ) -> None:145 __tracebackhide__ = True146 await self._not.to_contain_text(expected, use_inner_text, timeout)147 async def to_have_attribute(148 self,149 name: str,150 value: Union[str, Pattern],151 timeout: float = None,152 ) -> None:153 __tracebackhide__ = True...

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test_assertions.py

Source: test_assertions.py Github

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...73def test_assertions_locator_to_contain_text(page: Page, server: Server) -> None:74 page.goto(server.EMPTY_PAGE)75 page.set_content("<div id=foobar>kek</​div>")76 expect(page.locator("div#foobar")).to_contain_text("kek")77 expect(page.locator("div#foobar")).not_to_contain_text("bar", timeout=100)78 with pytest.raises(AssertionError):79 expect(page.locator("div#foobar")).to_contain_text("bar", timeout=100)80 page.set_content("<div>Text \n1</​div><div>Text2</​div><div>Text3</​div>")81 expect(page.locator("div")).to_contain_text(["ext 1", re.compile("ext3")])82def test_assertions_locator_to_have_attribute(page: Page, server: Server) -> None:83 page.goto(server.EMPTY_PAGE)84 page.set_content("<div id=foobar>kek</​div>")85 expect(page.locator("div#foobar")).to_have_attribute("id", "foobar")86 expect(page.locator("div#foobar")).to_have_attribute("id", re.compile("foobar"))87 expect(page.locator("div#foobar")).not_to_have_attribute("id", "kek", timeout=100)88 with pytest.raises(AssertionError):89 expect(page.locator("div#foobar")).to_have_attribute("id", "koko", timeout=100)90def test_assertions_locator_to_have_class(page: Page, server: Server) -> None:91 page.goto(server.EMPTY_PAGE)...

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I ran into this problem as well where my test would run in headed mode but not headless mode. I had a window of Chromium open when trying to run my test and it will fail. Once I closed all Chromium windows it worked in headless mode.

https://stackoverflow.com/questions/71687642/playwright-headless-chromium-cant-find-selector-but-finds-it-in-ui-mode

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