commit 2d780237d95cd3d95401f52be2edeac8b458eb68
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Thu May 13 14:24:49 2021 -0700
committer GitHub <noreply@github.com> Thu May 13 14:24:49 2021 -0700
tree ef3d237387c0b2bd0c2fe3ea10f03968e3db0b28
parent c4c3beb5ad6b55c20b6dc7c6a92860f467afa75b

bpo-28146: Fix a confusing error message in str.format() (GH-24213)


Automerge-Triggered-By: GH:pitrou
(cherry picked from commit 4aeee0b47b3a2b604bbac37040320ffc88c291f2)

Co-authored-by: Irit Katriel <iritkatriel@yahoo.com>

Lib/test/test_unicode.py

diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 0e6cbb6..5db7a9b 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -1231,8 +1231,11 @@ def __repr__(self):
                           0, 1, 2, 3, 4, 5, 6, 7)
 
         # string format spec errors
-        self.assertRaises(ValueError, "{0:-s}".format, '')
-        self.assertRaises(ValueError, format, "", "-")
+        sign_msg = "Sign not allowed in string format specifier"
+        self.assertRaisesRegex(ValueError, sign_msg, "{0:-s}".format, '')
+        self.assertRaisesRegex(ValueError, sign_msg, format, "", "-")
+        space_msg = "Space not allowed in string format specifier"
+        self.assertRaisesRegex(ValueError, space_msg, "{: }".format, '')
         self.assertRaises(ValueError, "{0:=s}".format, '')
 
         # Alternate formatting is not supported