mozilla-release/testing/web-platform/tests/webstorage/storage_set_value_enumerate.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>WebStorage Test: Storage - set value with enumerate</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
  var store_list = [
    ["key0", "value0"],
    ["key1", "value1"],
    ["key2", "value2"]
  ];
  ["localStorage", "sessionStorage"].forEach(function(name) {
    test(function () {
      var storage = window[name];
      storage.clear();

      store_list.forEach(function(item) {
        storage.setItem(item[0], item[1]);
      });

      for (var i = 0; i < store_list.length; i++) {
          var value = storage.getItem("key" + i);
          assert_equals(value, "value" + i);
      }
    }, "enumerate a " + name + " object with the key and get the values");
  });
</script>