From 621292237c2d47dabb33b37ec6db945fa1d5716e Mon Sep 17 00:00:00 2001 From: Neal Norwitz Date: Fri, 14 Apr 2006 06:33:24 +0000 Subject: [PATCH] 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 --- Lib/test/leakers/test_tee.py | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Lib/test/leakers/test_tee.py diff --git a/Lib/test/leakers/test_tee.py b/Lib/test/leakers/test_tee.py new file mode 100644 index 0000000000..f0aa444662 --- /dev/null +++ b/Lib/test/leakers/test_tee.py @@ -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() -- 2.40.0