Files
textual/tests/test_arrange.py
TomJGooding 7a9d32fdbf test: make tests async to fix failures on Python 3.9
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
2025-09-17 13:38:05 +01:00

119 lines
3.3 KiB
Python

import pytest
from textual._arrange import TOP_Z, arrange
from textual.app import App
from textual.geometry import NULL_OFFSET, Region, Size, Spacing
from textual.layout import WidgetPlacement
from textual.widget import Widget
async def test_arrange_empty():
container = Widget(id="container")
result = arrange(container, [], Size(80, 24), Size(80, 24))
assert result.placements == []
assert result.widgets == set()
async def test_arrange_dock_top():
container = Widget(id="container")
container._parent = App()
child = Widget(id="child")
header = Widget(id="header")
header.styles.dock = "top"
header.styles.height = "1"
result = arrange(container, [child, header], Size(80, 24), Size(80, 24))
assert result.placements == [
WidgetPlacement(
Region(0, 0, 80, 1), NULL_OFFSET, Spacing(), header, order=TOP_Z, fixed=True
),
WidgetPlacement(
Region(0, 1, 80, 23), NULL_OFFSET, Spacing(), child, order=0, fixed=False
),
]
assert result.widgets == {child, header}
async def test_arrange_dock_left():
container = Widget(id="container")
container._parent = App()
child = Widget(id="child")
header = Widget(id="header")
header.styles.dock = "left"
header.styles.width = "10"
result = arrange(container, [child, header], Size(80, 24), Size(80, 24))
assert result.placements == [
WidgetPlacement(
Region(0, 0, 10, 24),
NULL_OFFSET,
Spacing(),
header,
order=TOP_Z,
fixed=True,
),
WidgetPlacement(
Region(10, 0, 70, 24), NULL_OFFSET, Spacing(), child, order=0, fixed=False
),
]
assert result.widgets == {child, header}
async def test_arrange_dock_right():
container = Widget(id="container")
container._parent = App()
child = Widget(id="child")
header = Widget(id="header")
header.styles.dock = "right"
header.styles.width = "10"
result = arrange(container, [child, header], Size(80, 24), Size(80, 24))
assert result.placements == [
WidgetPlacement(
Region(70, 0, 10, 24),
NULL_OFFSET,
Spacing(),
header,
order=TOP_Z,
fixed=True,
),
WidgetPlacement(
Region(0, 0, 70, 24), NULL_OFFSET, Spacing(), child, order=0, fixed=False
),
]
assert result.widgets == {child, header}
async def test_arrange_dock_bottom():
container = Widget(id="container")
container._parent = App()
child = Widget(id="child")
header = Widget(id="header")
header.styles.dock = "bottom"
header.styles.height = "1"
result = arrange(container, [child, header], Size(80, 24), Size(80, 24))
assert result.placements == [
WidgetPlacement(
Region(0, 23, 80, 1),
NULL_OFFSET,
Spacing(),
header,
order=TOP_Z,
fixed=True,
),
WidgetPlacement(
Region(0, 0, 80, 23), NULL_OFFSET, Spacing(), child, order=0, fixed=False
),
]
assert result.widgets == {child, header}
async def test_arrange_dock_badly():
child = Widget(id="child")
child.styles.dock = "nowhere"
with pytest.raises(AssertionError):
_ = arrange(Widget(), [child], Size(80, 24), Size(80, 24))