https://github.com/python/cpython/commit/5d0abb69715b9638f26c896444643055ec2ef038
commit: 5d0abb69715b9638f26c896444643055ec2ef038
branch: main
author: Mikhail Efimov <[email protected]>
committer: markshannon <[email protected]>
date: 2025-10-20T11:45:07+01:00
summary:
gh-139951: Test on GC collection disabled if threshold is zero (GH-140304)
files:
M Lib/test/test_gc.py
diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py
index 4328909053465e..70d9d009fa8bfd 100644
--- a/Lib/test/test_gc.py
+++ b/Lib/test/test_gc.py
@@ -1559,6 +1559,20 @@ def test_indirect_calls_with_gc_disabled(self):
finally:
gc.enable()
+ # Ensure that setting *threshold0* to zero disables collection.
+ @gc_threshold(0)
+ def test_threshold_zero(self):
+ junk = []
+ i = 0
+ detector = GC_Detector()
+ while not detector.gc_happened:
+ i += 1
+ if i > 50000:
+ break
+ junk.append([]) # this may eventually trigger gc (if it is
enabled)
+
+ self.assertEqual(i, 50001)
+
class PythonFinalizationTests(unittest.TestCase):
def test_ast_fini(self):
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