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from __future__ import annotations
import pytest
from textual.app import App
from textual.widget import Widget, WidgetError
async def test_move_child_no_direction() -> None:
"""Test moving a widget in a child list."""
async with App().run_test() as pilot:
child = Widget()
await pilot.app.mount(child)
with pytest.raises(WidgetError):
pilot.app.screen.move_child(child)
async def test_move_child_both_directions() -> None:
"""Test calling move_child with more than one direction."""
async with App().run_test() as pilot:
child = Widget()
await pilot.app.mount(child)
with pytest.raises(WidgetError):
pilot.app.screen.move_child(child, before=1, after=2)
async def test_move_child_not_our_child() -> None:
"""Test attempting to move a child that isn't ours."""
async with App().run_test() as pilot:
child = Widget()
await pilot.app.mount(child)
with pytest.raises(WidgetError):
pilot.app.screen.move_child(Widget(), before=child)
async def test_move_child_to_outside() -> None:
"""Test attempting to move relative to a widget that isn't a child."""
async with App().run_test() as pilot:
child = Widget()
await pilot.app.mount(child)
with pytest.raises(WidgetError):
pilot.app.screen.move_child(child, before=Widget())
@pytest.mark.parametrize(
"reference",
[
"before",
"after",
],
)
async def test_move_child_index_in_relation_to_itself_index(reference: str) -> None:
"""Regression test for https://github.com/Textualize/textual/issues/1743"""
widget = Widget()
child = 0
kwargs = {reference: 0}
async with App().run_test() as pilot:
await pilot.app.screen.mount(widget)
pilot.app.screen.move_child(child, **kwargs) # Shouldn't raise an error.
@pytest.mark.parametrize(
"reference",
[
"before",
"after",
],
)
async def test_move_child_index_in_relation_to_itself_widget(reference: str) -> None:
"""Regression test for https://github.com/Textualize/textual/issues/1743"""
widget = Widget()
child = 0
kwargs = {reference: widget}
async with App().run_test() as pilot:
await pilot.app.screen.mount(widget)
pilot.app.screen.move_child(child, **kwargs) # Shouldn't raise an error.
@pytest.mark.parametrize(
"reference",
[
"before",
"after",
],
)
async def test_move_child_widget_in_relation_to_itself_index(reference: str) -> None:
"""Regression test for https://github.com/Textualize/textual/issues/1743"""
widget = Widget()
child = widget
kwargs = {reference: 0}
async with App().run_test() as pilot:
await pilot.app.screen.mount(widget)
pilot.app.screen.move_child(child, **kwargs) # Shouldn't raise an error.
@pytest.mark.parametrize(
"reference",
[
"before",
"after",
],
)
async def test_move_child_widget_in_relation_to_itself_widget(reference: str) -> None:
"""Regression test for https://github.com/Textualize/textual/issues/1743"""
widget = Widget()
child = widget
kwargs = {reference: widget}
async with App().run_test() as pilot:
await pilot.app.screen.mount(widget)
pilot.app.screen.move_child(child, **kwargs) # Shouldn't raise an error.
async def test_move_past_end_of_child_list() -> None:
"""Test attempting to move past the end of the child list."""
async with App().run_test() as pilot:
widgets = [Widget(id=f"widget-{n}") for n in range(10)]
container = Widget(*widgets)
await pilot.app.mount(container)
with pytest.raises(WidgetError):
container.move_child(widgets[0], before=len(widgets) + 10)
async def test_move_before_end_of_child_list() -> None:
"""Test attempting to move before the end of the child list."""
async with App().run_test() as pilot:
widgets = [Widget(id=f"widget-{n}") for n in range(10)]
container = Widget(*widgets)
await pilot.app.mount(container)
with pytest.raises(WidgetError):
container.move_child(widgets[0], before=-(len(widgets) + 10))
async def test_move_before_permutations() -> None:
"""Test the different permutations of moving one widget before another."""
widgets = [Widget(id=f"widget-{n}") for n in range(10)]
perms = (
(1, 0),
(widgets[1], 0),
(1, widgets[0]),
(widgets[1], widgets[0]),
)
for child, target in perms:
async with App[None]().run_test() as pilot:
container = Widget(*widgets)
await pilot.app.mount(container)
container.move_child(child, before=target)
assert container._nodes[0].id == "widget-1"
assert container._nodes[1].id == "widget-0"
assert container._nodes[2].id == "widget-2"
async def test_move_after_permutations() -> None:
"""Test the different permutations of moving one widget after another."""
widgets = [Widget(id=f"widget-{n}") for n in range(10)]
perms = ((0, 1), (widgets[0], 1), (0, widgets[1]), (widgets[0], widgets[1]))
for child, target in perms:
async with App[None]().run_test() as pilot:
container = Widget(*widgets)
await pilot.app.mount(container)
await pilot.pause()
container.move_child(child, after=target)
assert container._nodes[0].id == "widget-1"
assert container._nodes[1].id == "widget-0"
assert container._nodes[2].id == "widget-2"
async def test_move_child_after_last_child() -> None:
"""Test moving after a child after the last child."""
async with App().run_test() as pilot:
widgets = [Widget(id=f"widget-{n}") for n in range(10)]
container = Widget(*widgets)
await pilot.app.mount(container)
container.move_child(widgets[0], after=widgets[-1])
assert container._nodes[0].id == "widget-1"
assert container._nodes[-1].id == "widget-0"
async def test_move_child_after_last_numeric_location() -> None:
"""Test moving after a child after the last child's numeric position."""
async with App().run_test() as pilot:
widgets = [Widget(id=f"widget-{n}") for n in range(10)]
container = Widget(*widgets)
await pilot.app.mount(container)
container.move_child(widgets[0], after=widgets[9])
assert container._nodes[0].id == "widget-1"
assert container._nodes[-1].id == "widget-0"
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