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1a0cd7792d
* Remove the guard code which protects against `scrollbar-size-*:0`, update error messages indicating its supported now. * Fix scrollbar region calculation to support zero-thickness scrollbars * Add test ensuring zero-width scrollbars dont blow up * Updating CHANGELOG regarding zero-thickness scrollbars * Add note to scrollbar_size.md about zero width scrollbar
122 lines
3.6 KiB
Python
122 lines
3.6 KiB
Python
"""Test basic functioning of some containers."""
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from textual.app import App, ComposeResult
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from textual.containers import (
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Center,
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Horizontal,
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HorizontalScroll,
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Middle,
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Vertical,
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VerticalScroll,
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)
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from textual.widgets import Label
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async def test_horizontal_vs_horizontalscroll_scrolling():
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"""Check the default scrollbar behaviours for `Horizontal` and `HorizontalScroll`."""
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class HorizontalsApp(App[None]):
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CSS = """
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Screen {
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layout: vertical;
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}
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"""
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def compose(self) -> ComposeResult:
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with Horizontal():
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for _ in range(10):
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yield Label("How is life going? " * 3 + " | ")
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with HorizontalScroll():
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for _ in range(10):
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yield Label("How is life going? " * 3 + " | ")
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WIDTH = 80
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HEIGHT = 24
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app = HorizontalsApp()
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async with app.run_test(size=(WIDTH, HEIGHT)):
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horizontal = app.query_one(Horizontal)
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horizontal_scroll = app.query_one(HorizontalScroll)
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assert horizontal.size.height == horizontal_scroll.size.height
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assert horizontal.scrollbars_enabled == (False, False)
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assert horizontal_scroll.scrollbars_enabled == (False, True)
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async def test_vertical_vs_verticalscroll_scrolling():
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"""Check the default scrollbar behaviours for `Vertical` and `VerticalScroll`."""
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class VerticalsApp(App[None]):
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CSS = """
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Screen {
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layout: horizontal;
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}
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"""
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def compose(self) -> ComposeResult:
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with Vertical():
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for _ in range(10):
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yield Label("How is life going?\n" * 3 + "\n\n")
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with VerticalScroll():
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for _ in range(10):
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yield Label("How is life going?\n" * 3 + "\n\n")
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WIDTH = 80
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HEIGHT = 24
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app = VerticalsApp()
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async with app.run_test(size=(WIDTH, HEIGHT)):
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vertical = app.query_one(Vertical)
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vertical_scroll = app.query_one(VerticalScroll)
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assert vertical.size.width == vertical_scroll.size.width
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assert vertical.scrollbars_enabled == (False, False)
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assert vertical_scroll.scrollbars_enabled == (True, False)
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async def test_center_container():
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"""Check the size of the container `Center`."""
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class CenterApp(App[None]):
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def compose(self) -> ComposeResult:
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with Center():
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yield Label("<>\n<>\n<>")
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app = CenterApp()
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async with app.run_test():
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center = app.query_one(Center)
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assert center.size.width == app.size.width
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assert center.size.height == 3
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async def test_middle_container():
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"""Check the size of the container `Middle`."""
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class MiddleApp(App[None]):
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def compose(self) -> ComposeResult:
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with Middle():
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yield Label("1234")
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app = MiddleApp()
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async with app.run_test():
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middle = app.query_one(Middle)
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assert middle.size.width == 4
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assert middle.size.height == app.size.height
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async def test_scrollbar_zero_thickness():
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"""Ensuring that scrollbars can be set to zero thickness."""
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class ScrollbarZero(App):
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CSS = """* {
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scrollbar-size: 0 0;
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scrollbar-size-vertical: 0; /* just exercising the parser */
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scrollbar-size-horizontal: 0; /* exercise the parser */
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}
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"""
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def compose(self) -> ComposeResult:
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with Vertical():
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for _ in range(10):
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yield Label("Hello, world!")
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app = ScrollbarZero()
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async with app.run_test(size=(8, 6)):
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pass
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