Class TabsMessageCatchApp

tests/test_tabs.py:397–417

class TabsMessageCatchApp(App[None]):
    def __init__(self) -> None:
        super().__init__()
        self.intended_handlers: list[str] = []

    def compose(self) -> ComposeResult:
        yield Tabs("John", "Aeryn", "Moya", "Pilot")

    @on(Tabs.Cleared)
    @on(Tabs.TabActivated)
    @on(Underline.Clicked)
    @on(Tab.Clicked)
    def log_message(
        self, event: Tabs.Cleared | Tabs.TabActivated | Underline.Clicked | Tab.Clicked
    ) -> None:
        self.intended_handlers.append(event.handler_name)

    @on(Tabs.TabActivated)
    @on(Tabs.Cleared)
    def check_control(self, event: Tabs.TabActivated) -> None:
        assert event.control is event.tabs


async def test_startup_messages():