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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
169 lines
4.0 KiB
Python
169 lines
4.0 KiB
Python
from fractions import Fraction
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import pytest
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from textual._resolve import resolve, resolve_fraction_unit
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from textual.css.scalar import Scalar
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from textual.geometry import Size
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from textual.widget import Widget
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def test_resolve_empty():
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assert resolve([], 10, 1, Size(20, 10), Size(80, 24)) == []
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@pytest.mark.parametrize(
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"scalars,total,gutter,result",
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[
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(["10"], 100, 0, [(0, 10)]),
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(
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["10", "20"],
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100,
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0,
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[(0, 10), (10, 20)],
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),
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(
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["10", "20"],
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100,
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1,
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[(0, 10), (11, 20)],
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),
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(
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["10", "1fr"],
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100,
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1,
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[(0, 10), (11, 89)],
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),
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(
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["1fr", "1fr"],
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100,
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0,
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[(0, 50), (50, 50)],
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),
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(
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["3", "1fr", "1fr", "1"],
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100,
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1,
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[(0, 3), (4, 46), (51, 47), (99, 1)],
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),
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],
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)
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def test_resolve(scalars, total, gutter, result):
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assert (
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resolve(
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[Scalar.parse(scalar) for scalar in scalars],
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total,
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gutter,
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Size(40, 20),
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Size(80, 24),
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)
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== result
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)
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async def test_resolve_fraction_unit():
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"""Test resolving fraction units in combination with minimum widths."""
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widget1 = Widget()
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widget2 = Widget()
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widget3 = Widget()
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widget1.styles.width = "1fr"
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widget1.styles.min_width = 20
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widget2.styles.width = "2fr"
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widget2.styles.min_width = 10
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widget3.styles.width = "1fr"
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styles = (widget1.styles, widget2.styles, widget3.styles)
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# Try with width 80.
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# Fraction unit should one fourth of width
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assert resolve_fraction_unit(
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styles,
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Size(80, 24),
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Size(80, 24),
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Fraction(80),
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resolve_dimension="width",
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) == Fraction(20)
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# Try with width 50
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# First widget is fixed at 20
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# Remaining three widgets have 30 to play with
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# Fraction is 10
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assert resolve_fraction_unit(
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styles,
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Size(80, 24),
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Size(80, 24),
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Fraction(50),
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resolve_dimension="width",
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) == Fraction(10)
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# Try with width 35
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# First widget fixed at 20
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# Fraction is 5
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assert resolve_fraction_unit(
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styles,
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Size(80, 24),
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Size(80, 24),
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Fraction(35),
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resolve_dimension="width",
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) == Fraction(5)
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# Try with width 32
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# First widget fixed at 20
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# Second widget is fixed at 10
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# Remaining widget has all the space
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# Fraction is 2
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assert resolve_fraction_unit(
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styles,
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Size(80, 24),
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Size(80, 24),
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Fraction(32),
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resolve_dimension="width",
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) == Fraction(2)
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async def test_resolve_fraction_unit_stress_test():
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"""Check for zero division errors."""
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# https://github.com/Textualize/textual/issues/2673
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widget = Widget()
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styles = widget.styles
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styles.width = "1fr"
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# We're mainly checking for the absence of zero division errors,
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# which is a reoccurring theme for this code.
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for remaining_space in range(1, 51, 10):
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for max_width in range(1, remaining_space):
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styles.max_width = max_width
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for width in range(1, remaining_space, 2):
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size = Size(width, 24)
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resolved_unit = resolve_fraction_unit(
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[styles, styles, styles],
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size,
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size,
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Fraction(remaining_space),
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"width",
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)
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assert resolved_unit <= remaining_space
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async def test_resolve_issue_2502():
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"""Test https://github.com/Textualize/textual/issues/2502"""
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widget = Widget()
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widget.styles.width = "1fr"
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widget.styles.min_width = 11
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assert isinstance(
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resolve_fraction_unit(
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(widget.styles,),
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Size(80, 24),
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Size(80, 24),
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Fraction(10),
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resolve_dimension="width",
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),
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Fraction,
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)
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