RustPython
diff --git a/‎Lib/test/test_threading_local.py‎
Lines changed: 40 additions & 20 deletions b/‎Lib/test/test_threading_local.py‎
Lines changed: 40 additions & 20 deletions
@@ -3,15 +3,18 @@
 from doctest import DocTestSuite
 from test import support
 from test.support import threading_helper
+from test.support.import_helper import import_module
 import weakref
-import gc
 
 # Modules under test
 import _thread
 import threading
 import _threading_local
 
 
+threading_helper.requires_working_threading(module=True)
+
+
 class Weak(object):
     pass
 
@@ -23,7 +26,7 @@ def target(local, weaklist):
 
 class BaseLocalTest:
 
-    @unittest.skip("TODO: RUSTPYTHON, flaky test")
+    @unittest.skip('TODO: RUSTPYTHON; flaky test')
     def test_local_refs(self):
         self._local_refs(20)
         self._local_refs(50)
@@ -182,8 +185,7 @@ class LocalSubclass(self._local):
             """To test that subclasses behave properly."""
         self._test_dict_attribute(LocalSubclass)
 
-    # TODO: RUSTPYTHON, cycle detection/collection
-    @unittest.expectedFailure
+    @unittest.expectedFailure # TODO: RUSTPYTHON; cycle detection/collection
     def test_cycle_collection(self):
         class X:
             pass
@@ -197,35 +199,53 @@ class X:
         self.assertIsNone(wr())
 
 
-class ThreadLocalTest(unittest.TestCase, BaseLocalTest):
-    _local = _thread._local
+    def test_threading_local_clear_race(self):
+        # See https://github.com/python/cpython/issues/100892
+
+        _testcapi = import_module('_testcapi')
+        _testcapi.call_in_temporary_c_thread(lambda: None, False)
+
+        for _ in range(1000):
+            _ = threading.local()
 
-    # TODO: RUSTPYTHON, __new__ vs __init__ cooperation
-    @unittest.expectedFailure
-    def test_arguments():
-        super().test_arguments()
+        _testcapi.join_temporary_c_thread()
 
+    @support.cpython_only
+    def test_error(self):
+        class Loop(self._local):
+            attr = 1
+
+        # Trick the "if name == '__dict__':" test of __setattr__()
+        # to always be true
+        class NameCompareTrue:
+            def __eq__(self, other):
+                return True
+
+        loop = Loop()
+        with self.assertRaisesRegex(AttributeError, 'Loop.*read-only'):
+            loop.__setattr__(NameCompareTrue(), 2)
+
+
+class ThreadLocalTest(unittest.TestCase, BaseLocalTest):
+    _local = _thread._local
 
 class PyThreadingLocalTest(unittest.TestCase, BaseLocalTest):
     _local = _threading_local.local
 
 
-def test_main():
-    suite = unittest.TestSuite()
-    suite.addTest(DocTestSuite('_threading_local'))
-    suite.addTest(unittest.makeSuite(ThreadLocalTest))
-    suite.addTest(unittest.makeSuite(PyThreadingLocalTest))
+def load_tests(loader, tests, pattern):
+    tests.addTest(DocTestSuite('_threading_local'))
 
     local_orig = _threading_local.local
     def setUp(test):
         _threading_local.local = _thread._local
     def tearDown(test):
         _threading_local.local = local_orig
-    suite.addTest(DocTestSuite('_threading_local',
-                               setUp=setUp, tearDown=tearDown)
-                  )
+    tests.addTests(DocTestSuite('_threading_local',
+                                setUp=setUp, tearDown=tearDown)
+                   )
+    return tests
 
-    support.run_unittest(suite)
 
 if __name__ == '__main__':
-    test_main()
+    unittest.main()