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# Copyright (C) 2011 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
"""Tests of the bzrlib.utextwrap."""
from bzrlib import tests, utextwrap
# Japanese "Good morning".
# Each character have double width. So total 8 width on console.
_str_D = u'\u304a\u306f\u3088\u3046'
_str_S = u"hello"
# Combine single width characters and double width characters.
_str_SD = _str_S + _str_D
_str_DS = _str_D + _str_S
class TestUTextWrap(tests.TestCase):
def check_width(self, text, expected_width):
self.assertEqual(
utextwrap._width(text),
expected_width,
"Width of %r should be %d" % (text, expected_width))
def test__width(self):
self.check_width(_str_D, 8)
self.check_width(_str_SD, 13)
def check_cut(self, text, width, pos):
self.assertEqual(
utextwrap._cut(text, width),
(text[:pos], text[pos:])
)
def test_cut(self):
s = _str_SD
self.check_cut(s, 0, 0)
self.check_cut(s, 1, 1)
self.check_cut(s, 5, 5)
self.check_cut(s, 6, 5)
self.check_cut(s, 7, 6)
self.check_cut(s, 12, 8)
self.check_cut(s, 13, 9)
self.check_cut(s, 14, 9)
self.check_cut('A'*5, 3, 3)
def test_split(self):
w = utextwrap.UTextWrapper()
self.assertEqual(w._split(_str_D), list(_str_D))
self.assertEqual(w._split(_str_SD), [_str_S]+list(_str_D))
self.assertEqual(w._split(_str_DS), list(_str_D)+[_str_S])
def test_wrap(self):
self.assertEqual(utextwrap.wrap(_str_D, 1), list(_str_D))
self.assertEqual(utextwrap.wrap(_str_D, 2), list(_str_D))
self.assertEqual(utextwrap.wrap(_str_D, 3), list(_str_D))
self.assertEqual(utextwrap.wrap(_str_D, 3, break_long_words=False),
list(_str_D))
def test_fill(self):
# Test only can call fill() because it's just '\n'.join(wrap(text)).
self.assertEqual(utextwrap.fill(_str_D, 4),
"%s\n%s" % (_str_D[:2], _str_D[2:]))
# Demonstrate complicated case.
text = u"spam ham egg spamhamegg" + _str_D + u" spam" + _str_D*2
self.assertEqual(
utextwrap.fill(text, 8),
u'\n'.join([
"spam ham",
"egg spam",
"hamegg" + _str_D[0],
_str_D[1:],
"spam" + _str_D[:2],
_str_D[2:]+_str_D[:2],
_str_D[2:]
]))
self.assertEqual(
utextwrap.fill(text, 8, break_long_words=False),
u'\n'.join([
"spam ham",
"egg",
"spamhamegg",
# border between single width and double width.
_str_D,
"spam" + _str_D[:2],
_str_D[2:]+_str_D[:2],
_str_D[2:]
]))
def test_fill_indent(self):
w = utextwrap.UTextWrapper(8,
initial_indent=' '*4, subsequent_indent=' '*4)
self.assertEqual(w.fill(_str_SD),
u'\n'.join([
" hell",
" o" + _str_D[0],
" " + _str_D[1:3],
" " + _str_D[3]
]))
w.break_long_words = False
self.assertEqual(w.fill(_str_SD),
u'\n'.join([
" hello",
" " + _str_D[:2],
" " + _str_D[2:],
]))
w.width = 3
self.assertEqual(w.fill(_str_SD),
u'\n'.join([
" hello",
" " + _str_D[0],
" " + _str_D[1],
" " + _str_D[2],
" " + _str_D[3],
]))
# Regression test with Python's test_textwrap
# Note that some distribution including Ubuntu doesn't install
# Python's test suite.
try:
import test.test_textwrap as _test_textwrap
# replace test_textwrap's TextWrapper with UTextWrapper
_test_textwrap.TextWrapper = utextwrap.UTextWrapper
_test_textwrap.wrap = utextwrap.wrap
_test_textwrap.fill = utextwrap.fill
class TestWrap(_test_textwrap.WrapTestCase):
pass
class TestLongWord(_test_textwrap.LongWordTestCase):
pass
class TestIndent(_test_textwrap.IndentTestCases):
pass
except ImportError:
pass
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