backport keyword argument support for bytearray.decode
diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py
index 615c955..6257455 100644
--- a/Lib/test/test_bytes.py
+++ b/Lib/test/test_bytes.py
@@ -186,6 +186,8 @@
         b = self.type2test(sample, "latin1")
         self.assertRaises(UnicodeDecodeError, b.decode, "utf8")
         self.assertEqual(b.decode("utf8", "ignore"), "Hello world\n")
+        self.assertEqual(b.decode(errors="ignore", encoding="utf8"),
+                         "Hello world\n")
 
     def test_from_int(self):
         b = self.type2test(0)