# HG changeset patch
# Parent 781454f792c47babc78dcf7dd3b7e306d5d7a430
Issue #22406: Add tests for UU-decoding with garbage padding


diff -r 781454f792c4 -r d80f9977735a Lib/test/test_uu.py
--- a/Lib/test/test_uu.py	Sun Sep 14 19:19:49 2014 -0700
+++ b/Lib/test/test_uu.py	Mon Sep 15 06:23:20 2014 +0000
@@ -92,6 +92,27 @@
             self.fail("No exception raised")
         except uu.Error as e:
             self.assertEqual(str(e), "No valid begin line found in input file")
+    
+    def test_garbage_padding(self):
+        encodedtext = (
+            b"begin 644 file\n"
+            # length 1; bits 001100 111111 111111 111111
+            b"\x21\x2C\x5F\x5F\x5F\n"
+            b"\x20\n"
+            b"end\n"
+        )
+        plaintext = b"\x33"  # 00110011
+        
+        with self.subTest("uu.decode()"):
+            inp = io.BytesIO(encodedtext)
+            out = io.BytesIO()
+            uu.decode(inp, out, quiet=True)
+            self.assertEqual(out.getvalue(), plaintext)
+        
+        with self.subTest("uu-codec"):
+            import codecs
+            decoded = codecs.decode(encodedtext, "uu-codec")
+            self.assertEqual(decoded, plaintext)
 
 class UUStdIOTest(unittest.TestCase):