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41 lines
1.1 KiB
Python
41 lines
1.1 KiB
Python
"""Regression test for #1616 https://github.com/Textualize/textual/issues/1616"""
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import pytest
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from textual.app import App
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from textual.containers import Vertical
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@pytest.mark.xfail(
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reason="Needs #1610 so that overflow changes trigger layout recomputation."
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)
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async def test_overflow_change_updates_virtual_size_appropriately():
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class MyApp(App):
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def compose(self):
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yield Vertical()
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app = MyApp()
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async with app.run_test() as pilot:
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vertical = app.query_one(Vertical)
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height = vertical.virtual_size.height
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vertical.styles.overflow_x = "scroll"
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await pilot.pause() # Let changes propagate.
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assert vertical.virtual_size.height < height
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vertical.styles.overflow_x = "hidden"
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await pilot.pause()
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assert vertical.virtual_size.height == height
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width = vertical.virtual_size.width
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vertical.styles.overflow_y = "scroll"
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await pilot.pause()
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assert vertical.virtual_size.width < width
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vertical.styles.overflow_y = "hidden"
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await pilot.pause()
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assert vertical.virtual_size.width == width
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