[Python-checkins] r45377 - python/trunk/Lib/test/leakers/test_tee.py (original) (raw)

neal.norwitz python-checkins at python.org
Fri Apr 14 08:33:25 CEST 2006

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Author: neal.norwitz Date: Fri Apr 14 08:33:24 2006 New Revision: 45377

Added: python/trunk/Lib/test/leakers/test_tee.py (contents, props changed) Log: Restore test tee with some modifications.
The test case came from test_generators, not test_itertools. Ensure there's no cyclic garbage we are counting.

This is weird because it leaks, then reaches a limit:

python.exe -i test_tee.py

leak() 0 [26633 refs] leak() 0 [26658 refs] leak() 0 [26683 refs] leak() 0 [26708 refs] leak() 0 [26708 refs] leak() 0 [26708 refs] leak() 0

Added: python/trunk/Lib/test/leakers/test_tee.py

--- (empty file) +++ python/trunk/Lib/test/leakers/test_tee.py Fri Apr 14 08:33:24 2006 @@ -0,0 +1,25 @@ + +# Test case taken from test_generators +# See http://mail.python.org/pipermail/python-dev/2005-November/058339.html + +from itertools import tee +import gc + +def leak():

• def inner():
• def fib():

•    def yield_identity_forever(g):

•        while 1:

•            yield g

•    def _fib():

•        for i in yield_identity_forever(head):

•            yield i

•    head, tail, result = tee(_fib(), 3)

•    return result

• x = fib()
• x.next()
• inner()
• gc.collect() ; gc.collect()

• this is expected to return 0

• return gc.collect()

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