1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/copyWithin/fill-holes.js b/js/src/tests/test262/built-ins/Array/prototype/copyWithin/fill-holes.js
new file mode 100644
index 0000000000..972c5d82a7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/copyWithin/fill-holes.js
@@ -0,0 +1,20 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.copywithin
+description: >
+  Loop from each property, even empty holes.
+---*/
+
+var arr = [0, 1, , , 1];
+
+arr.copyWithin(0, 1, 4);
+
+assert.sameValue(arr.length, 5);
+assert.sameValue(arr[0], 1);
+assert.sameValue(arr[4], 1);
+assert.sameValue(arr.hasOwnProperty(1), false);
+assert.sameValue(arr.hasOwnProperty(2), false);
+assert.sameValue(arr.hasOwnProperty(3), false);
+
+reportCompare(0, 0);