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from textual.app import App, ComposeResult
from textual.widgets import DirectoryTree
class DirectoryTreeApp(App[None]):
def compose(self) -> ComposeResult:
tree = DirectoryTree(".")
tree.show_root = True
yield tree
async def test_managed_to_set_show_root_before_mounted() -> None:
"""https://github.com/Textualize/textual/issues/2363"""
async with DirectoryTreeApp().run_test() as pilot:
assert isinstance(pilot.app.query_one(DirectoryTree), DirectoryTree)
assert pilot.app.query_one(DirectoryTree).show_root is True
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