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from __future__ import annotations
import unittest
import urwid
from urwid.util import get_encoding
class LineBoxTest(unittest.TestCase):
def setUp(self) -> None:
self.old_encoding = get_encoding()
urwid.set_encoding("utf-8")
def tearDown(self) -> None:
urwid.set_encoding(self.old_encoding)
def test_linebox_pack(self):
# Bug #346 'pack' Padding does not run with LineBox
t = urwid.Text("AAA\nCCC\nDDD")
size = t.pack()
l = urwid.LineBox(t)
self.assertEqual(l.pack()[0], size[0] + 2)
self.assertEqual(l.pack()[1], size[1] + 2)
def test_border(self):
wrapped = urwid.Text("Text\non\nfour\nlines", align=urwid.CENTER)
l = urwid.LineBox(wrapped, tlcorner="╭", trcorner="╮", blcorner="╰", brcorner="╯")
cols, rows = 7, 6
self.assertEqual((cols, rows), l.pack(()))
canvas = l.render(())
self.assertEqual(cols, canvas.cols())
self.assertEqual(rows, canvas.rows())
self.assertEqual(
[
"╭─────╮",
"│ Text│",
"│ on │",
"│ four│",
"│lines│",
"╰─────╯",
],
[line.decode("utf-8") for line in canvas.text],
)
def test_header(self):
wrapped = urwid.Text("Some text")
l = urwid.LineBox(wrapped, title="Title", tlcorner="╭", trcorner="╮", blcorner="╰", brcorner="╯")
cols, rows = 11, 3
self.assertEqual((cols, rows), l.pack(()))
canvas = l.render(())
self.assertEqual(cols, canvas.cols())
self.assertEqual(rows, canvas.rows())
self.assertEqual(
[
"╭─ Title ─╮",
"│Some text│",
"╰─────────╯",
],
[line.decode("utf-8") for line in canvas.text],
)
l.set_title("New")
self.assertEqual(
[
"╭── New ──╮",
"│Some text│",
"╰─────────╯",
],
[line.decode("utf-8") for line in l.render(()).text],
)
def test_negative(self):
wrapped = urwid.Text("")
with self.assertRaises(ValueError) as ctx:
l = urwid.LineBox(wrapped, title="Title", tline="")
self.assertEqual("Cannot have a title when tline is empty string", str(ctx.exception))
l = urwid.LineBox(wrapped, tline="")
with self.assertRaises(ValueError) as ctx:
l.set_title("Fail")
self.assertEqual("Cannot set title when tline is unset", str(ctx.exception))
def test_partial_contour(self):
def mark_pressed(btn: urwid.Button) -> None:
nonlocal pressed
pressed = True
pressed = False
wrapped = urwid.Button("Wrapped", on_press=mark_pressed)
with self.subTest("No top line -> no top"):
l = urwid.LineBox(wrapped, tline="")
cols, rows = 13, 2
self.assertEqual((cols, rows), l.pack(()))
canvas = l.render(())
self.assertEqual(cols, canvas.cols())
self.assertEqual(rows, canvas.rows())
self.assertEqual(
[
"│< Wrapped >│",
"└───────────┘",
],
[line.decode("utf-8") for line in canvas.text],
)
self.assertIsNone(l.keypress((), "enter"))
self.assertTrue(pressed)
pressed = False
with self.subTest("No right side elements -> no side"):
l = urwid.LineBox(wrapped, rline="")
cols, rows = 12, 3
self.assertEqual((cols, rows), l.pack(()))
canvas = l.render(())
self.assertEqual(cols, canvas.cols())
self.assertEqual(rows, canvas.rows())
self.assertEqual(
[
"┌───────────",
"│< Wrapped >",
"└───────────",
],
[line.decode("utf-8") for line in canvas.text],
)
self.assertIsNone(l.keypress((), "enter"))
self.assertTrue(pressed)
pressed = False
with self.subTest("No left side elements -> no side"):
l = urwid.LineBox(wrapped, lline="")
cols, rows = 12, 3
self.assertEqual((cols, rows), l.pack(()))
canvas = l.render(())
self.assertEqual(cols, canvas.cols())
self.assertEqual(rows, canvas.rows())
self.assertEqual(
[
"───────────┐",
"< Wrapped >│",
"───────────┘",
],
[line.decode("utf-8") for line in canvas.text],
)
self.assertIsNone(l.keypress((), "enter"))
self.assertTrue(pressed)
pressed = False
with self.subTest("No bottom line -> no bottom"):
l = urwid.LineBox(wrapped, bline="")
cols, rows = 13, 2
self.assertEqual((cols, rows), l.pack(()))
canvas = l.render(())
self.assertEqual(cols, canvas.cols())
self.assertEqual(rows, canvas.rows())
self.assertEqual(
[
"┌───────────┐",
"│< Wrapped >│",
],
[line.decode("utf-8") for line in canvas.text],
)
self.assertIsNone(l.keypress((), "enter"))
self.assertTrue(pressed)
pressed = False
def test_columns_of_lineboxes(self):
# BUG #748
# Using PACK: width of widget 1 is 4, width of widget 2 is 5.
# With equal weight widget 1 will be rendered also 5.
columns = urwid.Columns(
[
(urwid.PACK, urwid.LineBox(urwid.Text("lol"), rline="", trcorner="", brcorner="")),
(urwid.PACK, urwid.LineBox(urwid.Text("wtf"), tlcorner="┬", blcorner="┴")),
]
)
canvas = columns.render(())
self.assertEqual(
[
"┌───┬───┐",
"│lol│wtf│",
"└───┴───┘",
],
[line.decode("utf-8") for line in canvas.text],
)
def test_replace_widget(self):
old_widget = urwid.Text("some text")
lb_widget = urwid.LineBox(old_widget)
canvas = lb_widget.render(())
self.assertEqual(
[
"┌─────────┐",
"│some text│",
"└─────────┘",
],
[line.decode("utf-8") for line in canvas.text],
)
self.assertIs(old_widget, lb_widget.original_widget)
new_widget = urwid.widget.Button("now it's a button")
lb_widget.original_widget = new_widget
canvas = lb_widget.render(())
self.assertEqual(
[
"┌─────────────────────┐",
"│< now it's a button >│",
"└─────────────────────┘",
],
[line.decode("utf-8") for line in canvas.text],
)
self.assertIs(new_widget, lb_widget.original_widget)
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