diff options
Diffstat (limited to 'Lib/test/test_gc.py')
| -rw-r--r-- | Lib/test/test_gc.py | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py index 40edd30..8c79ac6 100644 --- a/Lib/test/test_gc.py +++ b/Lib/test/test_gc.py @@ -124,6 +124,30 @@ def test_finalizer(): raise TestFailed, "didn't find obj in garbage (finalizer)" gc.garbage.remove(obj) +def test_finalizer_newclass(): + # A() is uncollectable if it is part of a cycle, make sure it shows up + # in gc.garbage. + class A(object): + def __del__(self): pass + class B(object): + pass + a = A() + a.a = a + id_a = id(a) + b = B() + b.b = b + gc.collect() + del a + del b + expect_nonzero(gc.collect(), "finalizer") + for obj in gc.garbage: + if id(obj) == id_a: + del obj.a + break + else: + raise TestFailed, "didn't find obj in garbage (finalizer)" + gc.garbage.remove(obj) + def test_function(): # Tricky: f -> d -> f, code should call d.clear() after the exec to # break the cycle. @@ -177,6 +201,21 @@ def test_del(): gc.disable() apply(gc.set_threshold, thresholds) +def test_del_newclass(): + # __del__ methods can trigger collection, make this to happen + thresholds = gc.get_threshold() + gc.enable() + gc.set_threshold(1) + + class A(object): + def __del__(self): + dir(self) + a = A() + del a + + gc.disable() + apply(gc.set_threshold, thresholds) + class Ouch: n = 0 def __del__(self): @@ -225,7 +264,9 @@ def test_all(): run_test("functions", test_function) run_test("frames", test_frame) run_test("finalizers", test_finalizer) + run_test("finalizers (new class)", test_finalizer_newclass) run_test("__del__", test_del) + run_test("__del__ (new class)", test_del_newclass) run_test("saveall", test_saveall) run_test("trashcan", test_trashcan) |