1 files changed, 46 insertions, 0 deletions
diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
index 7eb5529..5be78d7 100644
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -1737,6 +1737,10 @@ class CharmapTest(unittest.TestCase):
             codecs.charmap_decode, b"\x00\x01\x02", "strict", "ab"
         )
 
+        self.assertRaises(UnicodeDecodeError,
+            codecs.charmap_decode, b"\x00\x01\x02", "strict", "ab\ufffe"
+        )
+
         self.assertEqual(
             codecs.charmap_decode(b"\x00\x01\x02", "replace", "ab"),
             ("ab\ufffd", 3)
@@ -1793,6 +1797,17 @@ class CharmapTest(unittest.TestCase):
                                    {0: 'a', 1: 'b'}
         )
 
+        self.assertRaises(UnicodeDecodeError,
+            codecs.charmap_decode, b"\x00\x01\x02", "strict",
+                                   {0: 'a', 1: 'b', 2: None}
+        )
+
+        # Issue #14850
+        self.assertRaises(UnicodeDecodeError,
+            codecs.charmap_decode, b"\x00\x01\x02", "strict",
+                                   {0: 'a', 1: 'b', 2: '\ufffe'}
+        )
+
         self.assertEqual(
             codecs.charmap_decode(b"\x00\x01\x02", "replace",
                                   {0: 'a', 1: 'b'}),
@@ -1805,6 +1820,13 @@ class CharmapTest(unittest.TestCase):
             ("ab\ufffd", 3)
         )
 
+        # Issue #14850
+        self.assertEqual(
+            codecs.charmap_decode(b"\x00\x01\x02", "replace",
+                                  {0: 'a', 1: 'b', 2: '\ufffe'}),
+            ("ab\ufffd", 3)
+        )
+
         self.assertEqual(
             codecs.charmap_decode(b"\x00\x01\x02", "ignore",
                                   {0: 'a', 1: 'b'}),
@@ -1817,6 +1839,13 @@ class CharmapTest(unittest.TestCase):
             ("ab", 3)
         )
 
+        # Issue #14850
+        self.assertEqual(
+            codecs.charmap_decode(b"\x00\x01\x02", "ignore",
+                                  {0: 'a', 1: 'b', 2: '\ufffe'}),
+            ("ab", 3)
+        )
+
         allbytes = bytes(range(256))
         self.assertEqual(
             codecs.charmap_decode(allbytes, "ignore", {}),
@@ -1857,6 +1886,11 @@ class CharmapTest(unittest.TestCase):
                                    {0: a, 1: b},
         )
 
+        self.assertRaises(UnicodeDecodeError,
+            codecs.charmap_decode, b"\x00\x01\x02", "strict",
+                                   {0: a, 1: b, 2: 0xFFFE},
+        )
+
         self.assertEqual(
             codecs.charmap_decode(b"\x00\x01\x02", "replace",
                                   {0: a, 1: b}),
@@ -1864,11 +1898,23 @@ class CharmapTest(unittest.TestCase):
         )
 
         self.assertEqual(
+            codecs.charmap_decode(b"\x00\x01\x02", "replace",
+                                  {0: a, 1: b, 2: 0xFFFE}),
+            ("ab\ufffd", 3)
+        )
+
+        self.assertEqual(
             codecs.charmap_decode(b"\x00\x01\x02", "ignore",
                                   {0: a, 1: b}),
             ("ab", 3)
         )
 
+        self.assertEqual(
+            codecs.charmap_decode(b"\x00\x01\x02", "ignore",
+                                  {0: a, 1: b, 2: 0xFFFE}),
+            ("ab", 3)
+        )
+
 
 class WithStmtTest(unittest.TestCase):
     def test_encodedfile(self):