Class VisibleTester

tests/test_visible.py:12–27

An app for testing visibility changes.

    """

    class VisibleTester(App[None]):
        """An app for testing visibility changes."""

        CSS = """
        Widget {
            height: 1fr;
        }
        .hidden {
            visibility: hidden;
        }
        """

        def compose(self) -> ComposeResult:
            yield VerticalScroll(
                Widget(id="keep"), Widget(id="hide-via-code"), Widget(id="hide-via-css")
            )

    async with VisibleTester().run_test() as pilot:
        assert pilot.app.query_one("#keep").visible is True