From 05e01ee1149f2795c0daa86415528254ebe1cc4a Mon Sep 17 00:00:00 2001 From: Guido van Rossum Date: Wed, 12 Jun 2002 14:38:04 +0000 Subject: [PATCH] Add a testcase to ensure that cycles going through the __class__ link of a new-style instance are detected by the garbage collector. --- Lib/test/test_gc.py | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py index 22f7e74114b..23bb7c5cc9e 100644 --- a/Lib/test/test_gc.py +++ b/Lib/test/test_gc.py @@ -83,6 +83,12 @@ def test_newinstance(): gc.collect() del a expect_nonzero(gc.collect(), "newinstance(2)") + del B, C + expect_nonzero(gc.collect(), "newinstance(3)") + A.a = A() + del A + expect_nonzero(gc.collect(), "newinstance(4)") + expect(gc.collect(), 0, "newinstance(5)") def test_method(): # Tricky: self.__init__ is a bound method, it references the instance.