From ba7d4b9dc18777e1d3ad2bfc9d935e45e47ebe00 Mon Sep 17 00:00:00 2001
From: Jeong YunWon <69878+youknowone@users.noreply.github.com>
Date: Tue, 23 Aug 2022 17:58:38 +0900
Subject: gh-96197: Add `del sys.breakpointhook` behavior test (gh-96198)

---
 Lib/test/test_builtin.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 6fa5ea6..8c9c1e5 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -2072,6 +2072,11 @@ class TestBreakpoint(unittest.TestCase):
             breakpoint()
             mock.assert_not_called()
 
+    def test_runtime_error_when_hook_is_lost(self):
+        del sys.breakpointhook
+        with self.assertRaises(RuntimeError):
+            breakpoint()
+
 
 @unittest.skipUnless(pty, "the pty and signal modules must be available")
 class PtyTests(unittest.TestCase):
-- 
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