diff options
Diffstat (limited to 'Lib/test/test_capi/test_object.py')
| -rw-r--r-- | Lib/test/test_capi/test_object.py | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Lib/test/test_capi/test_object.py b/Lib/test/test_capi/test_object.py index 3e8fd91b9a6..d4056727d07 100644 --- a/Lib/test/test_capi/test_object.py +++ b/Lib/test/test_capi/test_object.py @@ -1,4 +1,5 @@ import enum +import sys import textwrap import unittest from test import support @@ -173,6 +174,16 @@ class EnableDeferredRefcountingTest(unittest.TestCase): self.assertTrue(_testinternalcapi.has_deferred_refcount(silly_list)) +class IsUniquelyReferencedTest(unittest.TestCase): + """Test PyUnstable_Object_IsUniquelyReferenced""" + def test_is_uniquely_referenced(self): + self.assertTrue(_testcapi.is_uniquely_referenced(object())) + self.assertTrue(_testcapi.is_uniquely_referenced([])) + # Immortals + self.assertFalse(_testcapi.is_uniquely_referenced(())) + self.assertFalse(_testcapi.is_uniquely_referenced(42)) + # CRASHES is_uniquely_referenced(NULL) + class CAPITest(unittest.TestCase): def check_negative_refcount(self, code): # bpo-35059: Check that Py_DECREF() reports the correct filename @@ -210,6 +221,7 @@ class CAPITest(unittest.TestCase): """ self.check_negative_refcount(code) + @support.requires_resource('cpu') def test_decref_delayed(self): # gh-130519: Test that _PyObject_XDecRefDelayed() and QSBR code path # handles destructors that are possibly re-entrant or trigger a GC. @@ -223,5 +235,17 @@ class CAPITest(unittest.TestCase): obj = MyObj() _testinternalcapi.incref_decref_delayed(obj) + def test_is_unique_temporary(self): + self.assertTrue(_testcapi.pyobject_is_unique_temporary(object())) + obj = object() + self.assertFalse(_testcapi.pyobject_is_unique_temporary(obj)) + + def func(x): + # This relies on the LOAD_FAST_BORROW optimization (gh-130704) + self.assertEqual(sys.getrefcount(x), 1) + self.assertFalse(_testcapi.pyobject_is_unique_temporary(x)) + + func(object()) + if __name__ == "__main__": unittest.main() |