https://github.com/beanbaginc/diffx/pull/5
From: Arthur Zamarin <arthurzam@gentoo.org>
Date: Tue, 6 Jun 2023 20:32:44 +0300
Subject: [PATCH] fix usage of deprecated assertRaisesRegex

--- a/pydiffx/tests/testcases.py
+++ b/pydiffx/tests/testcases.py
@@ -65,5 +65,5 @@ def assertMultiLineBytesEqual(self, first, second, line_endings='unix'):

     @contextmanager
     def assertRaisesMessage(self, exception, message):
-        with self.assertRaisesRegexp(exception, re.escape(message)):
+        with self.assertRaises(exception, msg=message):
             yield