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|
"""Test basic functioning of some containers."""
from textual.app import App, ComposeResult
from textual.containers import (
Center,
Horizontal,
HorizontalScroll,
Middle,
Vertical,
VerticalScroll,
)
from textual.widgets import Label
async def test_horizontal_vs_horizontalscroll_scrolling():
"""Check the default scrollbar behaviours for `Horizontal` and `HorizontalScroll`."""
class HorizontalsApp(App[None]):
CSS = """
Screen {
layout: vertical;
}
"""
def compose(self) -> ComposeResult:
with Horizontal():
for _ in range(10):
yield Label("How is life going? " * 3 + " | ")
with HorizontalScroll():
for _ in range(10):
yield Label("How is life going? " * 3 + " | ")
WIDTH = 80
HEIGHT = 24
app = HorizontalsApp()
async with app.run_test(size=(WIDTH, HEIGHT)):
horizontal = app.query_one(Horizontal)
horizontal_scroll = app.query_one(HorizontalScroll)
assert horizontal.size.height == horizontal_scroll.size.height
assert horizontal.scrollbars_enabled == (False, False)
assert horizontal_scroll.scrollbars_enabled == (False, True)
async def test_vertical_vs_verticalscroll_scrolling():
"""Check the default scrollbar behaviours for `Vertical` and `VerticalScroll`."""
class VerticalsApp(App[None]):
CSS = """
Screen {
layout: horizontal;
}
"""
def compose(self) -> ComposeResult:
with Vertical():
for _ in range(10):
yield Label("How is life going?\n" * 3 + "\n\n")
with VerticalScroll():
for _ in range(10):
yield Label("How is life going?\n" * 3 + "\n\n")
WIDTH = 80
HEIGHT = 24
app = VerticalsApp()
async with app.run_test(size=(WIDTH, HEIGHT)):
vertical = app.query_one(Vertical)
vertical_scroll = app.query_one(VerticalScroll)
assert vertical.size.width == vertical_scroll.size.width
assert vertical.scrollbars_enabled == (False, False)
assert vertical_scroll.scrollbars_enabled == (True, False)
async def test_center_container():
"""Check the size of the container `Center`."""
class CenterApp(App[None]):
def compose(self) -> ComposeResult:
with Center():
yield Label("<>\n<>\n<>")
app = CenterApp()
async with app.run_test():
center = app.query_one(Center)
assert center.size.width == app.size.width
assert center.size.height == 3
async def test_middle_container():
"""Check the size of the container `Middle`."""
class MiddleApp(App[None]):
def compose(self) -> ComposeResult:
with Middle():
yield Label("1234")
app = MiddleApp()
async with app.run_test():
middle = app.query_one(Middle)
assert middle.size.width == 4
assert middle.size.height == app.size.height
async def test_scrollbar_zero_thickness():
"""Ensuring that scrollbars can be set to zero thickness."""
class ScrollbarZero(App):
CSS = """* {
scrollbar-size: 0 0;
scrollbar-size-vertical: 0; /* just exercising the parser */
scrollbar-size-horizontal: 0; /* exercise the parser */
}
"""
def compose(self) -> ComposeResult:
with Vertical():
for _ in range(10):
yield Label("Hello, world!")
app = ScrollbarZero()
async with app.run_test(size=(8, 6)):
pass
|
