[3.13] gh-133210: Fix `test_inspect` without docstrings (GH-139651) (#139670)

gh-133210: Fix `test_inspect` without docstrings (GH-139651)
(cherry picked from commit 7c70cc5c23971ef448ea59827c6e6ae310157356)

Co-authored-by: sobolevn <mail@sobolevn.me>

diff --git a/Lib/test/test_inspect/test_inspect.py b/Lib/test/test_inspect/test_inspect.py
index 3e73dc5fe2694c4a43e67561684c3e1d3a5b31eb..691c2ffd5cc1db8e347fb1f9795a8b04f2213b53 100644 (file)
--- a/Lib/test/test_inspect/test_inspect.py
+++ b/Lib/test/test_inspect/test_inspect.py
@@ -4385,8 +4385,14 @@ class TestSignatureObject(unittest.TestCase):
 
             self.assertEqual(self.signature(C, follow_wrapped=False),
                              varargs_signature)
-            self.assertEqual(self.signature(C.__new__, follow_wrapped=False),
-                             varargs_signature)
+            if support.MISSING_C_DOCSTRINGS:
+                self.assertRaisesRegex(
+                    ValueError, "no signature found",
+                    self.signature, C.__new__, follow_wrapped=False,
+                )
+            else:
+                self.assertEqual(self.signature(C.__new__, follow_wrapped=False),
+                                varargs_signature)
 
     def test_signature_on_class_with_wrapped_new(self):
         with self.subTest('FunctionType'):