shutdown scrollbas

tests/test_auto_pilot.py

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+from textual.app import App
+from textual.pilot import Pilot
+from textual import events
+
+
+def test_auto_pilot() -> None:
+
+    keys_pressed: list[str] = []
+
+    class TestApp(App):
+        def on_key(self, event: events.Key) -> None:
+            keys_pressed.append(event.key)
+
+    async def auto_pilot(pilot: Pilot) -> None:
+
+        await pilot.press("tab", *"foo")
+        await pilot.pause(1 / 100)
+        await pilot.exit("bar")
+
+    app = TestApp()
+    result = app.run(headless=True, auto_pilot=auto_pilot)
+    assert result == "bar"
+    assert keys_pressed == ["tab", "f", "o", "o"]