1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-c-ii-5.js b/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-c-ii-5.js
new file mode 100644
index 0000000000..738c50cab5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-c-ii-5.js
@@ -0,0 +1,36 @@
+// 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.map
+description: >
+    Array.prototype.map - k values are accessed during each iteration
+    and not prior to starting the loop.
+---*/
+
+var kIndex = [];
+
+//By below way, we could verify that k would be setted as 0, 1, ..., length - 1 in order, and each value will be setted one time.
+function callbackfn(val, idx, obj) {
+  //Each position should be visited one time, which means k is accessed one time during iterations.
+  if (typeof kIndex[idx] === "undefined") {
+    //when current position is visited, its previous index should has been visited.
+    if (idx !== 0 && typeof kIndex[idx - 1] === "undefined") {
+      return true;
+    }
+    kIndex[idx] = 1;
+    return false;
+  } else {
+    return true;
+  }
+}
+
+var testResult = [11, 12, 13, 14].map(callbackfn);
+
+assert.sameValue(testResult.length, 4, 'testResult.length');
+assert.sameValue(testResult[0], false, 'testResult[0]');
+assert.sameValue(testResult[1], false, 'testResult[1]');
+assert.sameValue(testResult[2], false, 'testResult[2]');
+assert.sameValue(testResult[3], false, 'testResult[3]');
+
+reportCompare(0, 0);