1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/Array.prototype.concat_large-typed-array.js b/js/src/tests/test262/built-ins/Array/prototype/concat/Array.prototype.concat_large-typed-array.js
new file mode 100644
index 0000000000..a4de0ef3a9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/concat/Array.prototype.concat_large-typed-array.js
@@ -0,0 +1,52 @@
+// Copyright (c) 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+
+/*---
+esid: sec-array.prototype.concat
+description: Array.prototype.concat large typed array
+includes: [compareArray.js]
+features: [Symbol.isConcatSpreadable]
+---*/
+function concatTypedArray(type, elems, modulo) {
+  var items = new Array(elems);
+  var ta_by_len = new type(elems);
+  for (var i = 0; i < elems; ++i) {
+    ta_by_len[i] = items[i] = modulo === false ? i : elems % modulo;
+  }
+  var ta = new type(items);
+  assert.compareArray([].concat(ta, ta), [ta, ta]);
+  ta[Symbol.isConcatSpreadable] = true;
+  assert.compareArray([].concat(ta), items);
+
+  assert.compareArray([].concat(ta_by_len, ta_by_len), [ta_by_len, ta_by_len]);
+  ta_by_len[Symbol.isConcatSpreadable] = true;
+  assert.compareArray([].concat(ta_by_len), items);
+
+  // TypedArray with fake `length`.
+  ta = new type(1);
+  var defValue = ta[0];
+  var expected = new Array(4000);
+  expected[0] = defValue;
+
+  Object.defineProperty(ta, "length", {
+    value: 4000
+  });
+  ta[Symbol.isConcatSpreadable] = true;
+  assert.compareArray([].concat(ta), expected);
+}
+
+// Float16Array cannot be included in this because it cannot precisely represent integers above 2048
+var max = [Math.pow(2, 8), Math.pow(2, 16), Math.pow(2, 32), false, false];
+[
+  Uint8Array,
+  Uint16Array,
+  Uint32Array,
+  Float32Array,
+  Float64Array
+].forEach(function(ctor, i) {
+  concatTypedArray(ctor, 4000, max[i]);
+});
+
+reportCompare(0, 0);