From 286a2bcadb75839caaffe53e8d98a607fb58233f Mon Sep 17 00:00:00 2001
From: Anthony Sottile <asottile@umich.edu>
Date: Sun, 23 Jan 2022 13:55:48 -0500
Subject: [PATCH] python 3.11 fixes: native support for un-stringable
 exceptions

---
 testing/test_assertion.py | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/testing/test_assertion.py b/testing/test_assertion.py
index ae053f137..d57cc26a3 100644
--- a/testing/test_assertion.py
+++ b/testing/test_assertion.py
@@ -1648,7 +1648,7 @@ def test_raise_unprintable_assertion_error(pytester: Pytester) -> None:
     )
 
 
-def test_raise_assertion_error_raisin_repr(pytester: Pytester) -> None:
+def test_raise_assertion_error_raising_repr(pytester: Pytester) -> None:
     pytester.makepyfile(
         """
         class RaisingRepr(object):
@@ -1659,9 +1659,15 @@ def test_raise_assertion_error_raisin_repr(pytester: Pytester) -> None:
     """
     )
     result = pytester.runpytest()
-    result.stdout.fnmatch_lines(
-        ["E       AssertionError: <unprintable AssertionError object>"]
-    )
+    if sys.version_info >= (3, 11):
+        # python 3.11 has native support for un-str-able exceptions
+        result.stdout.fnmatch_lines(
+            ["E       AssertionError: <exception str() failed>"]
+        )
+    else:
+        result.stdout.fnmatch_lines(
+            ["E       AssertionError: <unprintable AssertionError object>"]
+        )
 
 
 def test_issue_1944(pytester: Pytester) -> None: