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from __future__ import annotations
import unittest
from unittest import mock
import urwid
class GridFlowTest(unittest.TestCase):
def test_fixed(self):
grid = urwid.GridFlow(
(urwid.Button(tag, align=urwid.CENTER) for tag in ("OK", "Cancel", "Help")),
cell_width=10,
h_sep=1,
v_sep=1,
align=urwid.CENTER,
)
self.assertEqual(frozenset((urwid.FIXED, urwid.FLOW)), grid.sizing())
cols, rows = 32, 1
self.assertEqual((cols, rows), grid.pack(()))
canvas = grid.render(())
self.assertEqual(cols, canvas.cols())
self.assertEqual(rows, canvas.rows())
self.assertEqual([b"< OK > < Cancel > < Help >"], canvas.text)
def test_default_focus(self):
with self.subTest("Simple"):
grid = urwid.GridFlow(
(urwid.Button("btn"), urwid.Button("btn")),
cell_width=10,
h_sep=1,
v_sep=1,
align=urwid.CENTER,
)
self.assertTrue(grid.selectable())
self.assertEqual(0, grid.focus_position)
with self.subTest("Simple not selectable"):
grid = urwid.GridFlow(
(urwid.Text("btn"), urwid.Text("btn")),
cell_width=10,
h_sep=1,
v_sep=1,
align=urwid.CENTER,
)
self.assertFalse(grid.selectable())
self.assertEqual(0, grid.focus_position)
with self.subTest("Explicit index"):
grid = urwid.GridFlow(
(urwid.Button("btn"), urwid.Button("btn")),
cell_width=10,
h_sep=1,
v_sep=1,
align=urwid.CENTER,
focus=1,
)
self.assertEqual(1, grid.focus_position)
with self.subTest("Explicit widget"):
btn2 = urwid.Button("btn 2")
grid = urwid.GridFlow(
(urwid.Button("btn"), btn2),
cell_width=10,
h_sep=1,
v_sep=1,
align=urwid.CENTER,
focus=btn2,
)
self.assertEqual(1, grid.focus_position)
with self.subTest("Selectable not first"):
grid = urwid.GridFlow(
(urwid.Text("text"), urwid.Button("btn")),
cell_width=10,
h_sep=1,
v_sep=1,
align=urwid.CENTER,
)
self.assertEqual(1, grid.focus_position)
def test_cell_width(self):
gf = urwid.GridFlow([], 5, 0, 0, "left")
self.assertEqual(gf.cell_width, 5)
def test_not_fit(self):
"""Test scenario with maxcol < cell_width (special case, warning will be produced)."""
widget = urwid.GridFlow(
[urwid.Button("first"), urwid.Button("second")],
5,
0,
0,
"left",
)
size = (3,)
with self.assertWarns(urwid.widget.GridFlowWarning):
canvas = widget.render(size)
self.assertEqual(
("< f", " i", " r", " s", " t", "< s", " e", " c", " o", " n", " d"),
canvas.decoded_text,
)
def test_multiline(self):
"""Test widgets fit only with multiple lines"""
widget = urwid.GridFlow(
[urwid.Button("first"), urwid.Button("second")],
10,
0,
0,
"left",
)
size = (10,)
canvas = widget.render(size)
self.assertEqual(
("< first >", "< second >"),
canvas.decoded_text,
)
def test_multiline_2(self):
"""Test widgets fit only with multiple lines"""
widget = urwid.GridFlow(
[urwid.Button("first"), urwid.Button("second"), urwid.Button("third"), urwid.Button("forth")],
10,
0,
0,
"left",
)
size = (20,)
canvas = widget.render(size)
self.assertEqual(
(
"< first >< second >",
"< third >< forth >",
),
canvas.decoded_text,
)
def test_basics(self):
repr(urwid.GridFlow([], 5, 0, 0, "left")) # should not fail
def test_v_sep(self):
gf = urwid.GridFlow([urwid.Text("test")], 10, 3, 1, "center")
self.assertEqual(gf.rows((40,), False), 1)
def test_keypress_v_sep_0(self):
"""
Ensure proper keypress handling when v_sep is 0.
https://github.com/urwid/urwid/issues/387
"""
call_back = mock.Mock()
button = urwid.Button("test", call_back)
gf = urwid.GridFlow([button], 10, 3, v_sep=0, align="center")
self.assertEqual(gf.keypress((20,), "enter"), None)
call_back.assert_called_with(button)
def test_length(self):
grid = urwid.GridFlow((urwid.Text(c) for c in "ABC"), 1, 0, 0, "left")
self.assertEqual(3, len(grid))
self.assertEqual(3, len(grid.contents))
def test_common(self):
gf = urwid.GridFlow([], 5, 1, 0, "left")
with self.subTest("Focus"):
self.assertEqual(gf.focus, None)
self.assertEqual(gf.contents, [])
self.assertRaises(IndexError, lambda: getattr(gf, "focus_position"))
self.assertRaises(IndexError, lambda: setattr(gf, "focus_position", None))
self.assertRaises(IndexError, lambda: setattr(gf, "focus_position", 0))
with self.subTest("Contents options"):
self.assertEqual(gf.options(), ("given", 5))
self.assertEqual(gf.options(width_amount=9), ("given", 9))
self.assertRaises(urwid.GridFlowError, lambda: gf.options("pack", None))
def test_focus_position(self):
t1 = urwid.Text("one")
t2 = urwid.Text("two")
gf = urwid.GridFlow([t1, t2], 5, 1, 0, "left")
self.assertEqual(gf.focus, t1)
self.assertEqual(gf.focus_position, 0)
self.assertEqual(gf.contents, [(t1, ("given", 5)), (t2, ("given", 5))])
gf.focus_position = 1
self.assertEqual(gf.focus, t2)
self.assertEqual(gf.focus_position, 1)
gf.contents.insert(0, (t2, ("given", 5)))
self.assertEqual(gf.focus_position, 2)
self.assertRaises(urwid.GridFlowError, lambda: gf.contents.append(()))
self.assertRaises(urwid.GridFlowError, lambda: gf.contents.insert(1, (t1, ("pack", None))))
gf.focus_position = 0
self.assertRaises(IndexError, lambda: setattr(gf, "focus_position", -1))
self.assertRaises(IndexError, lambda: setattr(gf, "focus_position", 3))
def test_deprecated(self):
t1 = urwid.Text("one")
t2 = urwid.Text("two")
gf = urwid.GridFlow([t1, t2], 5, 1, 0, "left")
# old methods:
gf.set_focus(0)
self.assertRaises(IndexError, lambda: gf.set_focus(-1))
self.assertRaises(IndexError, lambda: gf.set_focus(3))
gf.set_focus(t1)
self.assertEqual(gf.focus_position, 0)
self.assertRaises(ValueError, lambda: gf.set_focus("nonexistant"))
def test_empty(self):
"""Test behaviour of empty widget."""
grid = urwid.GridFlow(
(),
cell_width=10,
h_sep=1,
v_sep=1,
align=urwid.CENTER,
)
self.assertEqual(frozenset((urwid.FLOW,)), grid.sizing(), "Empty grid can not be handled as FIXED")
rows = 1
with self.subTest("Flow"):
maxcol = 1
self.assertEqual((maxcol, rows), grid.pack((maxcol,)))
rendered = grid.render((maxcol,))
self.assertEqual(maxcol, rendered.cols())
self.assertEqual(rows, rendered.rows())
with self.subTest("Fixed"):
maxcol = 0
self.assertEqual((maxcol, rows), grid.pack(()))
with self.assertRaises(ValueError):
grid.render(())
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