[Python-checkins] gh-94808: Coverage: Test uppercase string literal prefixes (GH-95925)

[miss-islington]

https://github.com/python/cpython/commit/00713a8b3a7f498443225bf35d123b84d526b92d
commit: 00713a8b3a7f498443225bf35d123b84d526b92d
branch: 3.10
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: miss-islington <31488909+miss-islington at users.noreply.github.com>
date: 2022-09-25T01:58:50-07:00
summary:

gh-94808: Coverage: Test uppercase string literal prefixes (GH-95925)

(cherry picked from commit f00383ec9bb9452fd9d5f5003f123e68fc4a71d8)

Co-authored-by: Michael Droettboom <mdboom at gmail.com>

files:
M Lib/test/test_string_literals.py

diff --git a/Lib/test/test_string_literals.py b/Lib/test/test_string_literals.py
index 7231970acf1..f3d5f3341a7 100644
--- a/Lib/test/test_string_literals.py
+++ b/Lib/test/test_string_literals.py
@@ -213,6 +213,13 @@ def test_eval_str_u(self):
         self.assertRaises(SyntaxError, eval, """ bu'' """)
         self.assertRaises(SyntaxError, eval, """ ub'' """)
 
+    def test_uppercase_prefixes(self):
+        self.assertEqual(eval(""" B'x' """), b'x')
+        self.assertEqual(eval(r""" R'\x01' """), r'\x01')
+        self.assertEqual(eval(r""" BR'\x01' """), br'\x01')
+        self.assertEqual(eval(""" F'{1+1}' """), f'{1+1}')
+        self.assertEqual(eval(r""" U'\U0001d120' """), u'\U0001d120')
+
     def check_encoding(self, encoding, extra=""):
         modname = "xx_" + encoding.replace("-", "_")
         fn = os.path.join(self.tmpdir, modname + ".py")