1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-c-ii-19.js b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-c-ii-19.js
new file mode 100644
index 0000000000..e4332b2cef
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-c-ii-19.js
@@ -0,0 +1,27 @@
+// 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.reduce
+description: >
+    Array.prototype.reduce - value of 'accumulator' used for first
+    iteration is the value of least index property which is not
+    undefined when 'initialValue' is not present on an Array
+---*/
+
+var called = 0;
+var result = false;
+
+function callbackfn(prevVal, curVal, idx, obj) {
+  called++;
+  if (idx === 1) {
+    result = (prevVal === 11) && curVal === 9;
+  }
+}
+
+[11, 9].reduce(callbackfn);
+
+assert(result, 'result !== true');
+assert.sameValue(called, 1, 'called');
+
+reportCompare(0, 0);