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from __future__ import annotations
from textual import on
from textual.app import App, ComposeResult
from textual.widgets import Collapsible, Label
from textual.widgets._collapsible import CollapsibleTitle
COLLAPSED_CLASS = "-collapsed"
def get_title(collapsible: Collapsible) -> CollapsibleTitle:
return collapsible.get_child_by_type(CollapsibleTitle)
def get_contents(collapsible: Collapsible) -> Collapsible.Contents:
return collapsible.get_child_by_type(Collapsible.Contents)
async def test_collapsible():
"""It should be possible to access title and collapsed."""
collapsible = Collapsible(title="Pilot", collapsed=True)
assert collapsible._title.label == "Pilot"
assert collapsible.collapsed
async def test_compose_default_collapsible():
"""Test default settings of Collapsible with 1 widget in contents."""
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(Label("Some Contents"))
async with CollapsibleApp().run_test() as pilot:
collapsible = pilot.app.query_one(Collapsible)
assert get_title(collapsible).label == "Toggle"
assert len(get_contents(collapsible).children) == 1
async def test_compose_empty_collapsible():
"""It should be possible to create an empty Collapsible."""
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible()
async with CollapsibleApp().run_test() as pilot:
collapsible = pilot.app.query_one(Collapsible)
assert len(get_contents(collapsible).children) == 0
async def test_compose_nested_collapsible():
"""Children Collapsibles are independent from parents Collapsibles."""
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
with Collapsible(Label("Outer"), id="outer", collapsed=False):
yield Collapsible(Label("Inner"), id="inner", collapsed=False)
async with CollapsibleApp().run_test() as pilot:
outer: Collapsible = pilot.app.get_child_by_id("outer", Collapsible)
inner: Collapsible = get_contents(outer).get_child_by_id("inner", Collapsible)
outer.collapsed = True
assert not inner.collapsed
async def test_compose_expanded_collapsible():
"""It should be possible to create a Collapsible with expanded contents."""
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(collapsed=False)
async with CollapsibleApp().run_test() as pilot:
collapsible = pilot.app.query_one(Collapsible)
assert not get_title(collapsible).has_class(COLLAPSED_CLASS)
assert not get_contents(collapsible).has_class(COLLAPSED_CLASS)
async def test_collapsible_collapsed_contents_display_false():
"""Test default settings of Collapsible with 1 widget in contents."""
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(Label("Some Contents"), collapsed=True)
async with CollapsibleApp().run_test() as pilot:
collapsible = pilot.app.query_one(Collapsible)
assert not get_contents(collapsible).display
async def test_collapsible_expanded_contents_display_true():
"""Test default settings of Collapsible with 1 widget in contents."""
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(Label("Some Contents"), collapsed=False)
async with CollapsibleApp().run_test() as pilot:
collapsible = pilot.app.query_one(Collapsible)
assert get_contents(collapsible).display
async def test_toggle_title():
"""Clicking title should update ``collapsed``."""
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(collapsed=False)
async with CollapsibleApp().run_test() as pilot:
collapsible = pilot.app.query_one(Collapsible)
assert not collapsible.collapsed
await pilot.click(CollapsibleTitle)
assert collapsible.collapsed
await pilot.click(CollapsibleTitle)
assert not collapsible.collapsed
async def test_toggle_message():
"""Toggling should post a message."""
hits = []
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(collapsed=True)
@on(Collapsible.Toggled)
def catch_collapsible_events(self) -> None:
hits.append("toggled")
async with CollapsibleApp().run_test() as pilot:
assert pilot.app.query_one(Collapsible).collapsed
await pilot.click(CollapsibleTitle)
await pilot.pause()
assert not pilot.app.query_one(Collapsible).collapsed
assert len(hits) == 1
await pilot.click(CollapsibleTitle)
await pilot.pause()
assert pilot.app.query_one(Collapsible).collapsed
assert len(hits) == 2
async def test_expand_message():
"""Clicking to expand should post a message."""
hits = []
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(collapsed=True)
def on_collapsible_expanded(self) -> None:
hits.append("expanded")
async with CollapsibleApp().run_test() as pilot:
assert pilot.app.query_one(Collapsible).collapsed
await pilot.click(CollapsibleTitle)
await pilot.pause()
assert not pilot.app.query_one(Collapsible).collapsed
assert len(hits) == 1
async def test_expand_via_watcher_message():
"""Setting `collapsed` to `False` should post a message."""
hits = []
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(collapsed=True)
def on_collapsible_expanded(self) -> None:
hits.append("expanded")
async with CollapsibleApp().run_test() as pilot:
assert pilot.app.query_one(Collapsible).collapsed
pilot.app.query_one(Collapsible).collapsed = False
await pilot.pause()
assert not pilot.app.query_one(Collapsible).collapsed
assert len(hits) == 1
async def test_collapse_message():
"""Clicking on collapsed should post a message."""
hits = []
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(collapsed=False)
def on_collapsible_collapsed(self) -> None:
hits.append("collapsed")
async with CollapsibleApp().run_test() as pilot:
assert not pilot.app.query_one(Collapsible).collapsed
await pilot.click(CollapsibleTitle)
await pilot.pause()
assert pilot.app.query_one(Collapsible).collapsed
assert len(hits) == 1
async def test_collapse_via_watcher_message():
"""Setting `collapsed` to `True` should post a message."""
hits = []
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(collapsed=False)
def on_collapsible_collapsed(self) -> None:
hits.append("collapsed")
async with CollapsibleApp().run_test() as pilot:
assert not pilot.app.query_one(Collapsible).collapsed
pilot.app.query_one(Collapsible).collapsed = True
await pilot.pause()
assert pilot.app.query_one(Collapsible).collapsed
assert len(hits) == 1
async def test_collapsible_title_reactive_change():
class CollapsibleApp(App[None]):
def compose(self) -> ComposeResult:
yield Collapsible(title="Old title")
async with CollapsibleApp().run_test() as pilot:
collapsible = pilot.app.query_one(Collapsible)
assert get_title(collapsible).label == "Old title"
collapsible.title = "New title"
assert get_title(collapsible).label == "New title"
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