gh-132106: Ensure that running `logging.handlers.QueueListener` cannot be started again (GH-132444)

Prevents a thread leak
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/Lib/test/test_logging.py b/Lib/test/test_logging.py
index 11f6b64abe2..9305844829a 100644
--- a/Lib/test/test_logging.py
+++ b/Lib/test/test_logging.py
@@ -4356,6 +4356,17 @@ class QueueHandlerTest(BaseTest):
         listener.stop()
         self.assertIsNone(listener._thread)
 
+    def test_queue_listener_multi_start(self):
+        handler = TestHandler(support.Matcher())
+        with logging.handlers.QueueListener(self.queue, handler) as listener:
+            self.assertRaises(RuntimeError, listener.start)
+
+        with listener:
+            self.assertRaises(RuntimeError, listener.start)
+
+        listener.start()
+        listener.stop()
+
     def test_queue_listener_with_StreamHandler(self):
         # Test that traceback and stack-info only appends once (bpo-34334, bpo-46755).
         listener = logging.handlers.QueueListener(self.queue, self.root_hdlr)