dom/bindings/test/test_named_getter_enumerability.html

   1 <!DOCTYPE html>
   2 <meta charset=utf-8>
   3 <title>Test for named getter enumerability</title>
   4 <script src="/resources/testharness.js"></script>
   5 <script src="/resources/testharnessreport.js"></script>
   6 <div id="log"></div>
   7 <script>
   8 test(function() {
   9   var list = document.getElementsByTagName("div");
  10   var desc = Object.getOwnPropertyDescriptor(list, "0");
  11   assert_equals(typeof desc, "object", "Should have a '0' property");
  12   assert_true(desc.enumerable, "'0' property should be enumerable");
  13   desc = Object.getOwnPropertyDescriptor(list, "log");
  14   assert_equals(typeof desc, "object", "Should have a 'log' property");
  15   assert_false(desc.enumerable, "'log' property should not be enumerable");
  16 }, "Correct getOwnPropertyDescriptor behavior");
  17 test(function() {
  18   var list = document.getElementsByTagName("div");
  19   props = [];
  20   for (var prop in list) {
  21     props.push(prop);
  22   }
  23   assert_not_equals(props.indexOf("0"), -1, "Should enumerate '0'");
  24   assert_equals(props.indexOf("log"), -1, "Should not enumerate 'log'");
  25 }, "Correct enumeration behavior");
  26 test(function() {
  27   var list = document.getElementsByTagName("div");
  28   props = Object.keys(list)
  29   assert_not_equals(props.indexOf("0"), -1, "Keys should contain '0'");
  30   assert_equals(props.indexOf("log"), -1, "Keys should not contain 'log'");
  31 }, "Correct keys() behavior");
  32 test(function() {
  33   var list = document.getElementsByTagName("div");
  34   props = Object.getOwnPropertyNames(list)
  35   assert_not_equals(props.indexOf("0"), -1,
  36                     "own prop names should contain '0'");
  37   assert_not_equals(props.indexOf("log"), -1,
  38                     "own prop names should contain 'log'");
  39 }, "Correct getOwnPropertyNames() behavior");
  40 </script>