1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/from/new-instance-with-mapfn.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/from/new-instance-with-mapfn.js
new file mode 100644
index 0000000000..9a17d2db77
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/from/new-instance-with-mapfn.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.from
+description: >
+  Return a new TypedArray using mapfn
+includes: [testTypedArray.js]
+features: [TypedArray]
+---*/
+
+var source = [42, 43, 42];
+
+testWithTypedArrayConstructors(function(TA) {
+  var mapfn = function(kValue) {
+    return kValue * 2;
+  };
+
+  var result = TA.from(source, mapfn);
+  assert.sameValue(result.length, 3);
+  assert.sameValue(result[0], 84);
+  assert.sameValue(result[1], 86);
+  assert.sameValue(result[2], 84);
+  assert.sameValue(result.constructor, TA);
+  assert.sameValue(Object.getPrototypeOf(result), TA.prototype);
+});
+
+reportCompare(0, 0);