diff options
| -rw-r--r-- | Lib/test/test_unparse.py | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/Lib/test/test_unparse.py b/Lib/test/test_unparse.py index 77ce18c..106704b 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): |