1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/create-non-array.js b/js/src/tests/test262/built-ins/Array/prototype/concat/create-non-array.js
new file mode 100644
index 0000000000..6501c3270a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/concat/create-non-array.js
@@ -0,0 +1,40 @@
+// 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-array.prototype.concat
+description: Constructor is ignored for non-Array values
+info: |
+    1. Let O be ? ToObject(this value).
+    2. Let A be ? ArraySpeciesCreate(O, 0).
+
+    9.4.2.3 ArraySpeciesCreate
+
+    [...]
+    3. Let isArray be ? IsArray(originalArray).
+    4. If isArray is false, return ? ArrayCreate(length).
+---*/
+
+var obj = {
+  length: 0
+};
+var callCount = 0;
+var result;
+Object.defineProperty(obj, 'constructor', {
+  get: function() {
+    callCount += 1;
+  }
+});
+
+result = Array.prototype.concat.call(obj);
+
+assert.sameValue(callCount, 0, 'The value of callCount is expected to be 0');
+assert.sameValue(
+  Object.getPrototypeOf(result),
+  Array.prototype,
+  'Object.getPrototypeOf(Array.prototype.concat.call(obj)) returns Array.prototype'
+);
+assert(Array.isArray(result), 'Array.isArray(result) must return true');
+assert.sameValue(result.length, 1, 'The value of result.length is expected to be 1');
+assert.sameValue(result[0], obj, 'The value of result[0] is expected to equal the value of obj');
+
+reportCompare(0, 0);