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Code by Inyeol Lee, submitted to SF bug 595350, to implement

Browse source 
the string/unicode method .replace() with a zero-lengt first argument.
Inyeol contributed tests for this too.
This commit is contained in:
Guido van Rossum 2002-08-23 18:21:28 +00:00
parent 280488b9a3
commit 8b1a6d694f
5 changed files with 59 additions and 46 deletions
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4
Lib/test/string_tests.py
View file

@ -202,6 +202,10 @@ def run_method_tests(test):
test('replace', 'one!two!three!', 'one@two@three@', '!', '@')
test('replace', 'one!two!three!', 'one!two!three!', 'x', '@')
test('replace', 'one!two!three!', 'one!two!three!', 'x', '@', 2)
test('replace', 'abc', '-a-b-c-', '', '-')
test('replace', 'abc', '-a-b-c', '', '-', 3)
test('replace', 'abc', 'abc', '', '-', 0)
test('replace', '', '', '', '')
# Next three for SF bug 422088: [OSF1 alpha] string.replace(); died with
# MemoryError due to empty result (platform malloc issue when requesting
# 0 bytes).

4
Lib/test/test_descr.py
View file

@ -2996,10 +2996,6 @@ def strops():
except ValueError: pass
else: raise TestFailed, "''.rindex('5') doesn't raise ValueError"
try: ''.replace('', '')
except ValueError: pass
else: raise TestFailed, "''.replace('', '') doesn't raise ValueError"
try: '%(n)s' % None
except TypeError: pass
else: raise TestFailed, "'%(n)s' % None doesn't raise TypeError"

10
Lib/test/test_unicode.py
View file

@ -210,12 +210,10 @@ test('replace', u'one!two!three!', u'one!two!three!', u'!', u'@', 0)
test('replace', u'one!two!three!', u'one@two@three@', u'!', u'@')
test('replace', u'one!two!three!', u'one!two!three!', u'x', u'@')
test('replace', u'one!two!three!', u'one!two!three!', u'x', u'@', 2)
try:
u"abc".replace(u"", u"x")
except ValueError:
pass
else:
raise TestFailed, "u.replace('', ...) should raise ValueError"
test('replace', u'abc', u'-a-b-c-', u'', u'-')
test('replace', u'abc', u'-a-b-c', u'', u'-', 3)
test('replace', u'abc', u'abc', u'', u'-', 0)
test('replace', u'', u'', u'', u'')
test('startswith', u'hello', True, u'he')
test('startswith', u'hello', True, u'hello')