diff options
Diffstat (limited to 'Lib/test/test_textwrap.py')
| -rw-r--r-- | Lib/test/test_textwrap.py | 159 |
1 files changed, 150 insertions, 9 deletions
diff --git a/Lib/test/test_textwrap.py b/Lib/test/test_textwrap.py index c86f5cfae8..1bba77eb9e 100644 --- a/Lib/test/test_textwrap.py +++ b/Lib/test/test_textwrap.py @@ -9,9 +9,8 @@ # import unittest -from test import support -from textwrap import TextWrapper, wrap, fill, dedent, indent +from textwrap import TextWrapper, wrap, fill, dedent, indent, shorten class BaseTestCase(unittest.TestCase): @@ -430,6 +429,90 @@ What a mess! self.check_wrap(text, 7, ["aa \xe4\xe4-", "\xe4\xe4"]) +class MaxLinesTestCase(BaseTestCase): + text = "Hello there, how are you this fine day? I'm glad to hear it!" + + def test_simple(self): + self.check_wrap(self.text, 12, + ["Hello [...]"], + max_lines=0) + self.check_wrap(self.text, 12, + ["Hello [...]"], + max_lines=1) + self.check_wrap(self.text, 12, + ["Hello there,", + "how [...]"], + max_lines=2) + self.check_wrap(self.text, 13, + ["Hello there,", + "how are [...]"], + max_lines=2) + self.check_wrap(self.text, 80, [self.text], max_lines=1) + self.check_wrap(self.text, 12, + ["Hello there,", + "how are you", + "this fine", + "day? I'm", + "glad to hear", + "it!"], + max_lines=6) + + def test_spaces(self): + # strip spaces before placeholder + self.check_wrap(self.text, 12, + ["Hello there,", + "how are you", + "this fine", + "day? [...]"], + max_lines=4) + # placeholder at the start of line + self.check_wrap(self.text, 6, + ["Hello", + "[...]"], + max_lines=2) + # final spaces + self.check_wrap(self.text + ' ' * 10, 12, + ["Hello there,", + "how are you", + "this fine", + "day? I'm", + "glad to hear", + "it!"], + max_lines=6) + + def test_placeholder(self): + self.check_wrap(self.text, 12, + ["Hello..."], + max_lines=1, + placeholder='...') + self.check_wrap(self.text, 12, + ["Hello there,", + "how are..."], + max_lines=2, + placeholder='...') + # long placeholder and indentation + with self.assertRaises(ValueError): + wrap(self.text, 16, initial_indent=' ', + max_lines=1, placeholder=' [truncated]...') + with self.assertRaises(ValueError): + wrap(self.text, 16, subsequent_indent=' ', + max_lines=2, placeholder=' [truncated]...') + self.check_wrap(self.text, 16, + [" Hello there,", + " [truncated]..."], + max_lines=2, + initial_indent=' ', + subsequent_indent=' ', + placeholder=' [truncated]...') + self.check_wrap(self.text, 16, + [" [truncated]..."], + max_lines=1, + initial_indent=' ', + subsequent_indent=' ', + placeholder=' [truncated]...') + self.check_wrap(self.text, 80, [self.text], placeholder='.' * 1000) + + class LongWordTestCase (BaseTestCase): def setUp(self): self.wrapper = TextWrapper() @@ -490,6 +573,14 @@ How *do* you spell that odd word, anyways? result = wrap(self.text, width=30, break_long_words=0) self.check(result, expect) + def test_max_lines_long(self): + self.check_wrap(self.text, 12, + ['Did you say ', + '"supercalifr', + 'agilisticexp', + '[...]'], + max_lines=4) + class IndentTestCases(BaseTestCase): @@ -777,12 +868,62 @@ class IndentTestCase(unittest.TestCase): self.assertEqual(indent(text, prefix, predicate), expect) -def test_main(): - support.run_unittest(WrapTestCase, - LongWordTestCase, - IndentTestCases, - DedentTestCase, - IndentTestCase) +class ShortenTestCase(BaseTestCase): + + def check_shorten(self, text, width, expect, **kwargs): + result = shorten(text, width, **kwargs) + self.check(result, expect) + + 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_shorten(text, 18, "Hello there, [...]") + self.check_shorten(text, len(text), text) + self.check_shorten(text, len(text) - 1, + "Hello there, how are you this fine day? " + "I'm glad to [...]") + + def test_placeholder(self): + text = "Hello there, how are you this fine day? I'm glad to hear it!" + + self.check_shorten(text, 17, "Hello there,$$", placeholder='$$') + self.check_shorten(text, 18, "Hello there, how$$", placeholder='$$') + self.check_shorten(text, 18, "Hello there, $$", placeholder=' $$') + self.check_shorten(text, len(text), text, placeholder='$$') + self.check_shorten(text, len(text) - 1, + "Hello there, how are you this fine day? " + "I'm glad to hear$$", placeholder='$$') + + def test_empty_string(self): + self.check_shorten("", 6, "") + + def test_whitespace(self): + # Whitespace collapsing + text = """ + This is a paragraph that already has + line breaks and \t tabs too.""" + self.check_shorten(text, 62, + "This is a paragraph that already has line " + "breaks and tabs too.") + self.check_shorten(text, 61, + "This is a paragraph that already has line " + "breaks and [...]") + + self.check_shorten("hello world! ", 12, "hello world!") + self.check_shorten("hello world! ", 11, "hello [...]") + # The leading space is trimmed from the placeholder + # (it would be ugly otherwise). + self.check_shorten("hello world! ", 10, "[...]") + + def test_width_too_small_for_placeholder(self): + shorten("x" * 20, width=8, placeholder="(......)") + with self.assertRaises(ValueError): + shorten("x" * 20, width=8, placeholder="(.......)") + + def test_first_word_too_long_but_placeholder_fits(self): + self.check_shorten("Helloo", 5, "[...]") + if __name__ == '__main__': - test_main() + unittest.main() |