[3.11] gh-106300: Improve `assertRaises(Exception)` usages in tests (GH-106302). (GH-106545)

(cherry picked from commit 6e6a4cd52332017b10c8d88fbbbfe015948093f4)

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

1 files changed, 3 insertions, 2 deletions

diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
index 934e4bb..e170a30 100644
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -2823,15 +2823,16 @@ class TransformCodecTest(unittest.TestCase):
     def test_custom_zlib_error_is_wrapped(self):
         # Check zlib codec gives a good error for malformed input
         msg = "^decoding with 'zlib_codec' codec failed"
-        with self.assertRaisesRegex(Exception, msg) as failure:
+        with self.assertRaises(zlib.error) as failure:
             codecs.decode(b"hello", "zlib_codec")
         self.assertIsInstance(failure.exception.__cause__,
                                                 type(failure.exception))
 
     def test_custom_hex_error_is_wrapped(self):
         # Check hex codec gives a good error for malformed input
+        import binascii
         msg = "^decoding with 'hex_codec' codec failed"
-        with self.assertRaisesRegex(Exception, msg) as failure:
+        with self.assertRaises(binascii.Error) as failure:
             codecs.decode(b"hello", "hex_codec")
         self.assertIsInstance(failure.exception.__cause__,
                                                 type(failure.exception))