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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
40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
import pytest
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from textual.widget import MountError, Widget
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class Content(Widget):
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pass
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class Body(Widget):
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pass
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async def test_find_dom_spot():
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# Build up a "fake" DOM for an application.
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screen = Widget(name="Screen")
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header = Widget(name="Header", id="header")
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body = Body(id="body")
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content = [Content(id=f"item{n}") for n in range(1000)]
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body._add_children(*content)
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footer = Widget(name="Footer", id="footer")
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screen._add_children(header, body, footer)
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# Just as a quick double-check, make sure the main components are in
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# their intended place.
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assert list(screen._nodes) == [header, body, footer]
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# Now check that we find what we're looking for in the places we expect
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# to find them.
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assert screen._find_mount_point(1) == (screen, 1)
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assert screen._find_mount_point(body) == screen._find_mount_point(1)
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assert screen._find_mount_point("Body") == screen._find_mount_point(body)
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assert screen._find_mount_point("#body") == screen._find_mount_point(1)
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# Finally, let's be sure that we get an error if, for some odd reason,
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# we go looking for a widget that isn't actually part of the DOM we're
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# looking in.
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with pytest.raises(MountError):
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_ = screen._find_mount_point(Widget())
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