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from textual.app import App, ComposeResult
from textual.widgets import Button, Static
async def test_text_style_inheritance():
"""Check that changes to text style are inherited in children."""
class FocusableThing(Static, can_focus=True):
DEFAULT_CSS = """
FocusableThing {
text-style: bold;
}
FocusableThing:focus {
text-style: bold reverse;
}
"""
def compose(self) -> ComposeResult:
yield Static("test", id="child-of-focusable-thing")
class InheritanceApp(App):
def compose(self) -> ComposeResult:
yield Button("button1")
yield FocusableThing()
yield Button("button2")
app = InheritanceApp()
async with app.run_test() as pilot:
await pilot.pause()
child = app.query_one("#child-of-focusable-thing")
assert child.rich_style.bold
assert not child.rich_style.reverse
await pilot.press("tab")
await pilot.pause()
assert child.rich_style.bold
assert child.rich_style.reverse
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