| # |
| # Test script for the textwrap module. |
| # |
| # Original tests written by Greg Ward <gward@python.net>. |
| # Converted to PyUnit by Peter Hansen <peter@engcorp.com>. |
| # Currently maintained by Greg Ward. |
| # |
| # $Id$ |
| # |
| |
| import unittest |
| from test import test_support |
| |
| from textwrap import TextWrapper, wrap, fill |
| |
| |
| class BaseTestCase(unittest.TestCase): |
| '''Parent class with utility methods for textwrap tests.''' |
| |
| def show(self, textin): |
| if isinstance(textin, list): |
| result = [] |
| for i in range(len(textin)): |
| result.append(" %d: %r" % (i, textin[i])) |
| result = '\n'.join(result) |
| elif isinstance(textin, (str, unicode)): |
| result = " %s\n" % repr(textin) |
| return result |
| |
| |
| def check(self, result, expect): |
| self.assertEquals(result, expect, |
| 'expected:\n%s\nbut got:\n%s' % ( |
| self.show(expect), self.show(result))) |
| |
| def check_wrap (self, text, width, expect): |
| result = wrap(text, width) |
| self.check(result, expect) |
| |
| def check_split (self, wrapper, text, expect): |
| result = wrapper._split(text) |
| self.assertEquals(result, expect, |
| "\nexpected %r\n" |
| "but got %r" % (expect, result)) |
| |
| |
| class WrapTestCase(BaseTestCase): |
| |
| def setUp(self): |
| self.wrapper = TextWrapper(width=45, fix_sentence_endings=True) |
| |
| def test_simple(self): |
| # Simple case: just words, spaces, and a bit of punctuation |
| |
| text = "Hello there, how are you this fine day? I'm glad to hear it!" |
| |
| self.check_wrap(text, 12, |
| ["Hello there,", |
| "how are you", |
| "this fine", |
| "day? I'm", |
| "glad to hear", |
| "it!"]) |
| self.check_wrap(text, 42, |
| ["Hello there, how are you this fine day?", |
| "I'm glad to hear it!"]) |
| self.check_wrap(text, 80, [text]) |
| |
| |
| def test_whitespace(self): |
| # Whitespace munging and end-of-sentence detection |
| |
| text = """\ |
| This is a paragraph that already has |
| line breaks. But some of its lines are much longer than the others, |
| so it needs to be wrapped. |
| Some lines are \ttabbed too. |
| What a mess! |
| """ |
| |
| expect = ["This is a paragraph that already has line", |
| "breaks. But some of its lines are much", |
| "longer than the others, so it needs to be", |
| "wrapped. Some lines are tabbed too. What a", |
| "mess!"] |
| |
| result = self.wrapper.wrap(text) |
| self.check(result, expect) |
| |
| result = self.wrapper.fill(text) |
| self.check(result, '\n'.join(expect)) |
| |
| |
| def test_wrap_short(self): |
| # Wrapping to make short lines longer |
| |
| text = "This is a\nshort paragraph." |
| |
| self.check_wrap(text, 20, ["This is a short", |
| "paragraph."]) |
| self.check_wrap(text, 40, ["This is a short paragraph."]) |
| |
| |
| def test_hyphenated(self): |
| # Test breaking hyphenated words |
| |
| text = ("this-is-a-useful-feature-for-" |
| "reformatting-posts-from-tim-peters'ly") |
| |
| self.check_wrap(text, 40, |
| ["this-is-a-useful-feature-for-", |
| "reformatting-posts-from-tim-peters'ly"]) |
| self.check_wrap(text, 41, |
| ["this-is-a-useful-feature-for-", |
| "reformatting-posts-from-tim-peters'ly"]) |
| self.check_wrap(text, 42, |
| ["this-is-a-useful-feature-for-reformatting-", |
| "posts-from-tim-peters'ly"]) |
| |
| def test_em_dash(self): |
| # Test text with em-dashes |
| text = "Em-dashes should be written -- thus." |
| self.check_wrap(text, 25, |
| ["Em-dashes should be", |
| "written -- thus."]) |
| |
| # Probe the boundaries of the properly written em-dash, |
| # ie. " -- ". |
| self.check_wrap(text, 29, |
| ["Em-dashes should be written", |
| "-- thus."]) |
| expect = ["Em-dashes should be written --", |
| "thus."] |
| self.check_wrap(text, 30, expect) |
| self.check_wrap(text, 35, expect) |
| self.check_wrap(text, 36, |
| ["Em-dashes should be written -- thus."]) |
| |
| # The improperly written em-dash is handled too, because |
| # it's adjacent to non-whitespace on both sides. |
| text = "You can also do--this or even---this." |
| expect = ["You can also do", |
| "--this or even", |
| "---this."] |
| self.check_wrap(text, 15, expect) |
| self.check_wrap(text, 16, expect) |
| expect = ["You can also do--", |
| "this or even---", |
| "this."] |
| self.check_wrap(text, 17, expect) |
| self.check_wrap(text, 19, expect) |
| expect = ["You can also do--this or even", |
| "---this."] |
| self.check_wrap(text, 29, expect) |
| self.check_wrap(text, 31, expect) |
| expect = ["You can also do--this or even---", |
| "this."] |
| self.check_wrap(text, 32, expect) |
| self.check_wrap(text, 35, expect) |
| |
| # All of the above behaviour could be deduced by probing the |
| # _split() method. |
| text = "Here's an -- em-dash and--here's another---and another!" |
| expect = ["Here's", " ", "an", " ", "--", " ", "em-", "dash", " ", |
| "and", "--", "here's", " ", "another", "---", |
| "and", " ", "another!"] |
| self.check_split(self.wrapper, text, expect) |
| |
| text = "and then--bam!--he was gone" |
| expect = ["and", " ", "then", "--", "bam!", "--", |
| "he", " ", "was", " ", "gone"] |
| self.check_split(self.wrapper, text, expect) |
| |
| |
| def test_unix_options (self): |
| # Test that Unix-style command-line options are wrapped correctly. |
| # Both Optik (OptionParser) and Docutils rely on this behaviour! |
| |
| text = "You should use the -n option, or --dry-run in its long form." |
| self.check_wrap(text, 20, |
| ["You should use the", |
| "-n option, or --dry-", |
| "run in its long", |
| "form."]) |
| self.check_wrap(text, 21, |
| ["You should use the -n", |
| "option, or --dry-run", |
| "in its long form."]) |
| expect = ["You should use the -n option, or", |
| "--dry-run in its long form."] |
| self.check_wrap(text, 32, expect) |
| self.check_wrap(text, 34, expect) |
| self.check_wrap(text, 35, expect) |
| self.check_wrap(text, 38, expect) |
| expect = ["You should use the -n option, or --dry-", |
| "run in its long form."] |
| self.check_wrap(text, 39, expect) |
| self.check_wrap(text, 41, expect) |
| expect = ["You should use the -n option, or --dry-run", |
| "in its long form."] |
| self.check_wrap(text, 42, expect) |
| |
| # Again, all of the above can be deduced from _split(). |
| text = "the -n option, or --dry-run or --dryrun" |
| expect = ["the", " ", "-n", " ", "option,", " ", "or", " ", |
| "--dry-", "run", " ", "or", " ", "--dryrun"] |
| self.check_split(self.wrapper, text, expect) |
| |
| def test_split(self): |
| # Ensure that the standard _split() method works as advertised |
| # in the comments |
| |
| text = "Hello there -- you goof-ball, use the -b option!" |
| |
| result = self.wrapper._split(text) |
| self.check(result, |
| ["Hello", " ", "there", " ", "--", " ", "you", " ", "goof-", |
| "ball,", " ", "use", " ", "the", " ", "-b", " ", "option!"]) |
| |
| |
| class LongWordTestCase (BaseTestCase): |
| def setUp(self): |
| self.wrapper = TextWrapper() |
| self.text = ''' |
| Did you say "supercalifragilisticexpialidocious?" |
| How *do* you spell that odd word, anyways? |
| ''' |
| |
| def test_break_long(self): |
| # Wrap text with long words and lots of punctuation |
| |
| self.check_wrap(self.text, 30, |
| ['Did you say "supercalifragilis', |
| 'ticexpialidocious?" How *do*', |
| 'you spell that odd word,', |
| 'anyways?']) |
| self.check_wrap(self.text, 50, |
| ['Did you say "supercalifragilisticexpialidocious?"', |
| 'How *do* you spell that odd word, anyways?']) |
| |
| |
| def test_nobreak_long(self): |
| # Test with break_long_words disabled |
| self.wrapper.break_long_words = 0 |
| self.wrapper.width = 30 |
| expect = ['Did you say', |
| '"supercalifragilisticexpialidocious?"', |
| 'How *do* you spell that odd', |
| 'word, anyways?' |
| ] |
| result = self.wrapper.wrap(self.text) |
| self.check(result, expect) |
| |
| # Same thing with kwargs passed to standalone wrap() function. |
| result = wrap(self.text, width=30, break_long_words=0) |
| self.check(result, expect) |
| |
| |
| |
| class IndentTestCases(BaseTestCase): |
| |
| # called before each test method |
| def setUp(self): |
| self.text = '''\ |
| This paragraph will be filled, first without any indentation, |
| and then with some (including a hanging indent).''' |
| |
| |
| def test_fill(self): |
| # Test the fill() method |
| |
| expect = '''\ |
| This paragraph will be filled, first |
| without any indentation, and then with |
| some (including a hanging indent).''' |
| |
| result = fill(self.text, 40) |
| self.check(result, expect) |
| |
| |
| def test_initial_indent(self): |
| # Test initial_indent parameter |
| |
| expect = [" This paragraph will be filled,", |
| "first without any indentation, and then", |
| "with some (including a hanging indent)."] |
| result = wrap(self.text, 40, initial_indent=" ") |
| self.check(result, expect) |
| |
| expect = "\n".join(expect) |
| result = fill(self.text, 40, initial_indent=" ") |
| self.check(result, expect) |
| |
| |
| def test_subsequent_indent(self): |
| # Test subsequent_indent parameter |
| |
| expect = '''\ |
| * This paragraph will be filled, first |
| without any indentation, and then |
| with some (including a hanging |
| indent).''' |
| |
| result = fill(self.text, 40, |
| initial_indent=" * ", subsequent_indent=" ") |
| self.check(result, expect) |
| |
| |
| def test_main(): |
| suite = unittest.TestSuite() |
| suite.addTest(unittest.makeSuite(WrapTestCase)) |
| suite.addTest(unittest.makeSuite(LongWordTestCase)) |
| suite.addTest(unittest.makeSuite(IndentTestCases)) |
| test_support.run_suite(suite) |
| |
| if __name__ == '__main__': |
| test_main() |