From: Nikita Sobolev <mail@sobolevn.me>
Date: Mon, 26 Feb 2024 12:32:27 +0000 (+0300)
Subject: gh-115931: Fix `SyntaxWarning`s in `test_unparse` (#115935)
X-Git-Tag: v3.13.0a5~235
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b7383b8b71d49c761480ae9a8b2111644310e61d;p=thirdparty%2FPython%2Fcpython.git

gh-115931: Fix `SyntaxWarning`s in `test_unparse` (#115935)
---

diff --git a/Lib/test/test_unparse.py b/Lib/test/test_unparse.py
index 77ce18cbf4cb..106704ba8c9c 100644
--- a/Lib/test/test_unparse.py
+++ b/Lib/test/test_unparse.py
@@ -650,9 +650,18 @@ class CosmeticTestCase(ASTTestCase):
         self.check_ast_roundtrip("""f'''""\"''\\'{""\"\\n\\"'''""\" '''\\n'''}''' """)
 
     def test_backslash_in_format_spec(self):
-        self.check_ast_roundtrip("""f"{x:\\ }" """)
+        import re
+        msg = re.escape("invalid escape sequence '\\ '")
+        with self.assertWarnsRegex(SyntaxWarning, msg):
+            self.check_ast_roundtrip("""f"{x:\\ }" """)
+        self.check_ast_roundtrip("""f"{x:\\n}" """)
+
         self.check_ast_roundtrip("""f"{x:\\\\ }" """)
-        self.check_ast_roundtrip("""f"{x:\\\\\\ }" """)
+
+        with self.assertWarnsRegex(SyntaxWarning, msg):
+            self.check_ast_roundtrip("""f"{x:\\\\\\ }" """)
+        self.check_ast_roundtrip("""f"{x:\\\\\\n}" """)
+
         self.check_ast_roundtrip("""f"{x:\\\\\\\\ }" """)
 
     def test_quote_in_format_spec(self):