Update test_type_comments.py to 3.14.5 (#7858)

Lib/test/test_type_comments.py

@@ -1,6 +1,7 @@
 import ast
 import sys
 import unittest
+from test.support import import_helper
 
 
 funcdef = """\
@@ -405,6 +406,16 @@ class TypeCommentTests(unittest.TestCase):
         check_both_ways("pass  # type: ignorewhatever\n")
         check_both_ways("pass  # type: ignoreé\n")
 
+    def test_non_utf8_type_comment_with_ignore_cookie(self):
+        _testcapi = import_helper.import_module('_testcapi')
+        flags = 0x0800 | 0x1000 # PyCF_IGNORE_COOKIE | PyCF_TYPE_COMMENTS
+        with self.assertRaises(UnicodeDecodeError):
+            _testcapi.Py_CompileStringExFlags(
+                b"a=1 # type: \x80", "<test>", 256, flags)
+        with self.assertRaises(UnicodeDecodeError):
+            _testcapi.Py_CompileStringExFlags(
+                b"def a(f=8, #type: \x80\n\x80", "<test>", 256, flags)
+
     @unittest.expectedFailure  # TODO: RUSTPYTHON; ValueError: mode must be "exec", "eval", "ipython", or "single"
     def test_func_type_input(self):