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bpo-30591: added test for textwrap backtracking #1988

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Merged
serhiy-storchaka merged 2 commits into from
Jun 7, 2017
Merged

bpo-30591: added test for textwrap backtracking #1988

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e9c12d9
added test for textwrap backtracking
jonathaneunice Jun 7, 2017
e10b9de
tweak comment and indentation
jonathaneunice Jun 7, 2017
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11 changes: 11 additions & 0 deletions Lib/test/test_textwrap.py
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Original file line number Diff line number Diff line change
Expand Up @@ -559,6 +559,17 @@ def test_placeholder(self):
placeholder=' [truncated]...')
self.check_wrap(self.text, 80, [self.text], placeholder='.' * 1000)

def test_placeholder_backtrack(self):
# Test special case when max_lines insufficient, but what
# would be last wrapped line so long the placeholder cannot
# be added there without violence. So, textwrap backtracks,
# adding placeholder to the penultimate line.
text = 'Good grief Python features are advancing quickly!'
self.check_wrap(text, 12,
['Good grief', 'Python*****'],
max_lines=3,
placeholder='*****')


class LongWordTestCase (BaseTestCase):
def setUp(self):
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