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diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/is-concat-spreadable-val-truthy.js b/js/src/tests/test262/built-ins/Array/prototype/concat/is-concat-spreadable-val-truthy.js
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+++ b/js/src/tests/test262/built-ins/Array/prototype/concat/is-concat-spreadable-val-truthy.js
@@ -0,0 +1,55 @@
+// 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.concat
+description: >
+    The `Symbol.isConcatSpreadable` property is defined and coerces to `true`
+info: |
+    1. Let O be ToObject(this value).
+    2. ReturnIfAbrupt(O).
+    3. Let A be ArraySpeciesCreate(O, 0).
+    4. ReturnIfAbrupt(A).
+    5. Let n be 0.
+    6. Let items be a List whose first element is O and whose subsequent
+       elements are, in left to right order, the arguments that were passed to
+       this function invocation.
+    7. Repeat, while items is not empty
+      a. Remove the first element from items and let E be the value of the element.
+      b. Let spreadable be IsConcatSpreadable(E).
+      c. ReturnIfAbrupt(spreadable).
+      d. If spreadable is true, then
+         [...]
+
+    ES6 22.1.3.1.1: Runtime Semantics: IsConcatSpreadable ( O )
+
+    1. If Type(O) is not Object, return false.
+    2. Let spreadable be Get(O, @@isConcatSpreadable).
+    3. ReturnIfAbrupt(spreadable).
+    4. If spreadable is not undefined, return ToBoolean(spreadable).
+features: [Symbol, Symbol.isConcatSpreadable]
+---*/
+
+var item = {};
+var result;
+
+item[Symbol.isConcatSpreadable] = true;
+result = [].concat(item);
+assert.sameValue(result.length, 0, 'The value of result.length is expected to be 0');
+
+item[Symbol.isConcatSpreadable] = 86;
+result = [].concat(item);
+assert.sameValue(result.length, 0, 'The value of result.length is expected to be 0');
+
+item[Symbol.isConcatSpreadable] = 'string';
+result = [].concat(item);
+assert.sameValue(result.length, 0, 'The value of result.length is expected to be 0');
+
+item[Symbol.isConcatSpreadable] = Symbol();
+result = [].concat(item);
+assert.sameValue(result.length, 0, 'The value of result.length is expected to be 0');
+
+item[Symbol.isConcatSpreadable] = {};
+result = [].concat(item);
+assert.sameValue(result.length, 0, 'The value of result.length is expected to be 0');
+
+reportCompare(0, 0);