import flet as ft

from app.main import main


class FakePage:
    platform = ft.PagePlatform.LINUX

    def add(self, *controls: ft.Control) -> None:
        self.controls = controls

    def update(self) -> None:
        pass

    def open(self, control: ft.Control) -> None:
        pass

    def close(self, control: ft.Control) -> None:
        pass

    def launch_url(self, url: str) -> None:
        pass

    def run_task(self, handler) -> None:
        pass


def test_ui_control_tree_builds_with_current_flet_api() -> None:
    page = FakePage()
    main(page)  # type: ignore[arg-type]
    assert len(page.controls) == 1
    assert isinstance(page.controls[0], ft.SafeArea)