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40 lines
1.0 KiB
Python
40 lines
1.0 KiB
Python
from time import perf_counter
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from textual.app import App, ComposeResult
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from textual.widgets import Static
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class AnimApp(App):
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CSS = """
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#foo {
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height: 1;
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}
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"""
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def compose(self) -> ComposeResult:
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yield Static("foo", id="foo")
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async def test_animate_height() -> None:
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"""Test animating styles.height works."""
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# Styles.height is a scalar, which makes it more complicated to animate
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app = AnimApp()
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async with app.run_test() as pilot:
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static = app.query_one(Static)
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assert static.size.height == 1
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assert static.styles.height.value == 1
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static.styles.animate("height", 100, duration=0.5, easing="linear")
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start = perf_counter()
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# Wait for the animation to finished
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await pilot.wait_for_animation()
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elapsed = perf_counter() - start
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# Check that the full time has elapsed
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assert elapsed > 0.5
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# Check the height reached the maximum
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assert static.styles.height.value == 100
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