1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduceRight/15.4.4.22-3-19.js b/js/src/tests/test262/built-ins/Array/prototype/reduceRight/15.4.4.22-3-19.js
new file mode 100644
index 0000000000..0ec7c0601e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduceRight/15.4.4.22-3-19.js
@@ -0,0 +1,50 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.reduceright
+description: >
+    Array.prototype.reduceRight - value of 'length' is an object which
+    has an own toString method
+---*/
+
+var testResult1 = true;
+var testResult2 = false;
+
+function callbackfn(prevVal, curVal, idx, obj) {
+  if (idx > 1) {
+    testResult1 = false;
+  }
+
+  if (idx === 1) {
+    testResult2 = true;
+  }
+  return false;
+}
+
+var toStringAccessed = false;
+var obj = {
+  0: 12,
+  1: 11,
+  2: 9,
+  length: {
+    toString: function() {
+      toStringAccessed = true;
+      return '2';
+    }
+  }
+};
+
+// objects inherit the default valueOf() method from Object
+// that simply returns itself. Since the default valueOf() method
+// does not return a primitive value, ES next tries to convert the object
+// to a number by calling its toString() method and converting the
+// resulting string to a number.
+
+Array.prototype.reduceRight.call(obj, callbackfn, 1);
+
+assert(testResult1, 'testResult1 !== true');
+assert(testResult2, 'testResult2 !== true');
+assert(toStringAccessed, 'toStringAccessed !== true');
+
+reportCompare(0, 0);