gh-111609: Test end_offset in SyntaxError subclass (#127830)

nineteendo · web-flow · commit e8f4e272cc82 · 2024-12-11T19:32:54.000+01:00
Test `end_offset` in SyntaxError subclass
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
@@ -2274,6 +2274,21 @@ def test_range_of_offsets(self):
                     self.assertIn(expected, err.getvalue())
                     the_exception = exc
 
+    def test_subclass(self):
+        class MySyntaxError(SyntaxError):
+            pass
+
+        try:
+            raise MySyntaxError("bad bad", ("bad.py", 1, 2, "abcdefg", 1, 7))
+        except SyntaxError as exc:
+            with support.captured_stderr() as err:
+                sys.__excepthook__(*sys.exc_info())
+            self.assertIn("""
+  File "bad.py", line 1
+    abcdefg
+     ^^^^^
+""", err.getvalue())
+
     def test_encodings(self):
         self.addCleanup(unlink, TESTFN)
         source = (
