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Apply diff3.txt from SF patch http://www.python.org/sf/536241

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If a str or unicode method returns the original object,
make sure that for str and unicode subclasses the original
will not be returned.

This should prevent SF bug http://www.python.org/sf/460020
from reappearing.
This commit is contained in:
Walter Dörwald 2002-04-17 21:34:05 +00:00
parent 1ec71ea48e
commit 2ee4be0775
2 changed files with 41 additions and 0 deletions
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19
Lib/test/test_string.py
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@ -22,6 +22,25 @@ def test(name, input, output, *args):
except:
value = sys.exc_type
f = name
if value == output:
# if the original is returned make sure that
# this doesn't happen with subclasses
if value is input:
class ssub(str):
def __repr__(self):
return 'ssub(%r)' % str.__repr__(self)
input = ssub(input)
try:
f = getattr(input, name)
value = apply(f, args)
except AttributeError:
f = getattr(string, name)
value = apply(f, (input,) + args)
if value is input:
if verbose:
print 'no'
print '*',f, `input`, `output`, `value`
return
if value != output:
if verbose:
print 'no'