gh-134323: Fix the new threading.RLock.locked method (#134368)

Co-authored-by: Kumar Aditya <kumaraditya@python.org>

Lib/test/lock_tests.py

@@ -370,6 +370,24 @@ class RLockTests(BaseLockTests):
         lock.release()
         self.assertFalse(lock.locked())
 
+    def test_locked_with_2threads(self):
+        # see gh-134323: check that a rlock which
+        # is acquired in a different thread,
+        # is still locked in the main thread.
+        result = []
+        rlock = self.locktype()
+        self.assertFalse(rlock.locked())
+        def acquire():
+            result.append(rlock.locked())
+            rlock.acquire()
+            result.append(rlock.locked())
+
+        with Bunch(acquire, 1):
+            pass
+        self.assertTrue(rlock.locked())
+        self.assertFalse(result[0])
+        self.assertTrue(result[1])
+
     def test_release_save_unacquired(self):
         # Cannot _release_save an unacquired lock
         lock = self.locktype()