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After upgrading `pytest-asyncio` to the latest version, lots of tests started failing in CI only on Python 3.9: `RuntimeError: There is no current event loop in thread 'MainThread'` Apparently these tests may have only been passing previously due to issues in earlier versions of `pytest-asyncio`. Changing these tests to async seems to fix the failures on Python 3.9. Related issue: https://github.com/pytest-dev/pytest-asyncio/issues/1039
12 lines
352 B
Python
12 lines
352 B
Python
from textual.widgets import Tree
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async def test_tree_node_parent() -> None:
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"""It should be possible to access a TreeNode's parent."""
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tree = Tree[None]("Anakin")
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child = tree.root.add("Leia")
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grandchild = child.add("Ben")
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assert tree.root.parent is None
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assert grandchild.parent == child
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assert child.parent == tree.root
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