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Viewing changes to bzrlib/tests/test_utextwrap.py

  • Committer: Vincent Ladeuil
  • Date: 2012-03-13 17:25:29 UTC
  • mfrom: (6499 +trunk)
  • mto: This revision was merged to the branch mainline in revision 6501.
  • Revision ID: v.ladeuil+lp@free.fr-20120313172529-i0suyjnepsor25i7
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bzrlib/tests/test_utextwrap.py
 
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# Copyright (C) 2011 Canonical Ltd
 
2
#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
12
#
 
13
# You should have received a copy of the GNU General Public License
 
14
# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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#
 
17
 
 
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"""Tests of the bzrlib.utextwrap."""
 
19
 
 
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from bzrlib import (
 
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    tests,
 
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    utextwrap,
 
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    )
 
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from bzrlib.tests import features
 
25
 
 
26
 
 
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# Japanese "Good morning".
 
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# Each character have double width. So total 8 width on console.
 
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_str_D = u'\u304a\u306f\u3088\u3046'
 
30
 
 
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_str_S = u"hello"
 
32
 
 
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# Combine single width characters and double width characters.
 
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_str_SD = _str_S + _str_D
 
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_str_DS = _str_D + _str_S
 
36
 
 
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class TestUTextWrap(tests.TestCase):
 
38
 
 
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    def check_width(self, text, expected_width):
 
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        w = utextwrap.UTextWrapper()
 
41
        self.assertEqual(
 
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                w._width(text),
 
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                expected_width,
 
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                "Width of %r should be %d" % (text, expected_width))
 
45
 
 
46
    def test_width(self):
 
47
        self.check_width(_str_D, 8)
 
48
        self.check_width(_str_SD, 13)
 
49
 
 
50
    def check_cut(self, text, width, pos):
 
51
        w = utextwrap.UTextWrapper()
 
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        self.assertEqual((text[:pos], text[pos:]), w._cut(text, width))
 
53
 
 
54
    def test_cut(self):
 
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        s = _str_SD
 
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        self.check_cut(s, 0, 0)
 
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        self.check_cut(s, 1, 1)
 
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        self.check_cut(s, 5, 5)
 
59
        self.check_cut(s, 6, 5)
 
60
        self.check_cut(s, 7, 6)
 
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        self.check_cut(s, 12, 8)
 
62
        self.check_cut(s, 13, 9)
 
63
        self.check_cut(s, 14, 9)
 
64
        self.check_cut(u'A'*5, 3, 3)
 
65
 
 
66
    def test_split(self):
 
67
        w = utextwrap.UTextWrapper()
 
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        self.assertEqual(list(_str_D), w._split(_str_D))
 
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        self.assertEqual([_str_S]+list(_str_D), w._split(_str_SD))
 
70
        self.assertEqual(list(_str_D)+[_str_S], w._split(_str_DS))
 
71
 
 
72
    def test_wrap(self):
 
73
        self.assertEqual(list(_str_D), utextwrap.wrap(_str_D, 1))
 
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        self.assertEqual(list(_str_D), utextwrap.wrap(_str_D, 2))
 
75
        self.assertEqual(list(_str_D), utextwrap.wrap(_str_D, 3))
 
76
        self.assertEqual(list(_str_D),
 
77
                         utextwrap.wrap(_str_D, 3, break_long_words=False))
 
78
 
 
79
class TestUTextFill(tests.TestCase):
 
80
 
 
81
    def test_fill_simple(self):
 
82
        # Test only can call fill() because it's just '\n'.join(wrap(text)).
 
83
        self.assertEqual("%s\n%s" % (_str_D[:2], _str_D[2:]),
 
84
                         utextwrap.fill(_str_D, 4))
 
85
 
 
86
    def test_fill_with_breaks(self):
 
87
        # Demonstrate complicated case.
 
88
        text = u"spam ham egg spamhamegg" + _str_D + u" spam" + _str_D*2
 
89
        self.assertEqual(u'\n'.join(["spam ham",
 
90
                                     "egg spam",
 
91
                                     "hamegg" + _str_D[0],
 
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                                     _str_D[1:],
 
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                                     "spam" + _str_D[:2],
 
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                                     _str_D[2:]+_str_D[:2],
 
95
                                     _str_D[2:]]),
 
96
                         utextwrap.fill(text, 8))
 
97
 
 
98
    def test_fill_without_breaks(self):
 
99
        text = u"spam ham egg spamhamegg" + _str_D + u" spam" + _str_D*2
 
100
        self.assertEqual(u'\n'.join(["spam ham",
 
101
                                     "egg",
 
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                                     "spamhamegg", 
 
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                                     # border between single width and double
 
104
                                     # width.
 
105
                                     _str_D,
 
106
                                     "spam" + _str_D[:2],
 
107
                                     _str_D[2:]+_str_D[:2],
 
108
                                     _str_D[2:]]),
 
109
                         utextwrap.fill(text, 8, break_long_words=False))
 
110
 
 
111
    def test_fill_indent_with_breaks(self):
 
112
        w = utextwrap.UTextWrapper(8, initial_indent=' '*4,
 
113
                                   subsequent_indent=' '*4)
 
114
        self.assertEqual(u'\n'.join(["    hell",
 
115
                                     "    o" + _str_D[0],
 
116
                                     "    " + _str_D[1:3],
 
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                                     "    " + _str_D[3]
 
118
                                     ]),
 
119
                         w.fill(_str_SD))
 
120
 
 
121
    def test_fill_indent_without_breaks(self):
 
122
        w = utextwrap.UTextWrapper(8, initial_indent=' '*4,
 
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                                   subsequent_indent=' '*4)
 
124
        w.break_long_words = False
 
125
        self.assertEqual(u'\n'.join(["    hello",
 
126
                                     "    " + _str_D[:2],
 
127
                                     "    " + _str_D[2:],
 
128
                                     ]),
 
129
                         w.fill(_str_SD))
 
130
 
 
131
    def test_fill_indent_without_breaks_with_fixed_width(self):
 
132
        w = utextwrap.UTextWrapper(8, initial_indent=' '*4,
 
133
                                   subsequent_indent=' '*4)
 
134
        w.break_long_words = False
 
135
        w.width = 3
 
136
        self.assertEqual(u'\n'.join(["    hello",
 
137
                                     "    " + _str_D[0],
 
138
                                     "    " + _str_D[1],
 
139
                                     "    " + _str_D[2],
 
140
                                     "    " + _str_D[3],
 
141
                                     ]),
 
142
                         w.fill(_str_SD))
 
143
 
 
144
class TestUTextWrapAmbiWidth(tests.TestCase):
 
145
    _cyrill_char = u"\u0410" # east_asian_width() == 'A'
 
146
 
 
147
    def test_ambiwidth1(self):
 
148
        w = utextwrap.UTextWrapper(4, ambiguous_width=1)
 
149
        s = self._cyrill_char*8
 
150
        self.assertEqual([self._cyrill_char*4]*2, w.wrap(s))
 
151
 
 
152
    def test_ambiwidth2(self):
 
153
        w = utextwrap.UTextWrapper(4, ambiguous_width=2)
 
154
        s = self._cyrill_char*8
 
155
        self.assertEqual([self._cyrill_char*2]*4, w.wrap(s))
 
156
 
 
157
 
 
158
# Regression test with Python's test_textwrap
 
159
# Note that some distribution including Ubuntu doesn't install
 
160
# Python's test suite.
 
161
try:
 
162
    from test import test_textwrap
 
163
 
 
164
    def override_textwrap_symbols(testcase):
 
165
        # Override the symbols imported by test_textwrap so it uses our own
 
166
        # replacements.
 
167
        testcase.overrideAttr(test_textwrap, 'TextWrapper',
 
168
                              utextwrap.UTextWrapper)
 
169
        testcase.overrideAttr(test_textwrap, 'wrap', utextwrap.wrap)
 
170
        testcase.overrideAttr(test_textwrap, 'fill', utextwrap.fill)
 
171
 
 
172
 
 
173
    def setup_both(testcase, base_class, reused_class):
 
174
 
 
175
        if (features.sphinx.available()):
 
176
            # Until https://bitbucket.org/birkenfeld/sphinx/issue/706 is fixed,
 
177
            # we can't run these tests when sphinx <= 1.0.1 as it breaks
 
178
            # textwrap.TextWrapper.wordsep_re
 
179
            version = tuple(map(int,
 
180
                                features.sphinx.module.__version__.split('.')))
 
181
            if version <= (1, 0, 7):
 
182
                raise tests.TestSkipped(
 
183
                    'sphinx textwrap monkeypatch breaks utextwrap')
 
184
        super(base_class, testcase).setUp()
 
185
        override_textwrap_symbols(testcase)
 
186
        reused_class.setUp(testcase)
 
187
 
 
188
 
 
189
    class TestWrap(tests.TestCase, test_textwrap.WrapTestCase):
 
190
 
 
191
        def setUp(self):
 
192
            setup_both(self, TestWrap, test_textwrap.WrapTestCase)
 
193
 
 
194
 
 
195
    class TestLongWord(tests.TestCase, test_textwrap.LongWordTestCase):
 
196
 
 
197
        def setUp(self):
 
198
            setup_both(self, TestLongWord, test_textwrap.LongWordTestCase)
 
199
 
 
200
 
 
201
    class TestIndent(tests.TestCase, test_textwrap.IndentTestCases):
 
202
 
 
203
        def setUp(self):
 
204
            setup_both(self, TestIndent, test_textwrap.IndentTestCases)
 
205
 
 
206
except ImportError:
 
207
 
 
208
    class TestWrap(tests.TestCase):
 
209
 
 
210
        def test_wrap(self):
 
211
            raise tests.TestSkipped("test.test_textwrap is not available.")
 
212
 
 
213
    class TestLongWord(tests.TestCase):
 
214
 
 
215
        def test_longword(self):
 
216
            raise tests.TestSkipped("test.test_textwrap is not available.")
 
217
 
 
218
    class TestIndent(tests.TestCase):
 
219
 
 
220
        def test_indent(self):
 
221
            raise tests.TestSkipped("test.test_textwrap is not available.")