Issue #15866: The xmlcharrefreplace error handler no more produces two XML

entities for a non-BMP character on narrow build.

1 files changed, 12 insertions, 0 deletions

diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index e44fe03..666cab8 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -1658,6 +1658,18 @@ class UnicodeTest(
         self.assertEqual(unicode_encodedecimal(u"123\u20ac\u0660", "replace"),
                          b'123?0')
 
+    def test_encode_decimal_with_surrogates(self):
+        from _testcapi import unicode_encodedecimal
+        tests = [(u'\U0001f49d', '💝'),
+                 (u'\ud83d', '�'),
+                 (u'\udc9d', '�'),
+                 (u'\ud83d\udc9d', '💝' if len(u'\U0001f49d') > 1 else
+                                  '��'),
+                ]
+        for s, exp in tests:
+            self.assertEqual(
+                    unicode_encodedecimal(u"123" + s, "xmlcharrefreplace"),
+                    '123' + exp)
 
 def test_main():
     test_support.run_unittest(__name__)