third_party/WebKit/LayoutTests/fast/dom/gc-5.html

   1 <head>
   2 <script>
   3 function doit()
   4 {
   5     var B = document.getElementById("span-B");
   6     B.customProperty = "B";
   7     B.nextSibling.customProperty = "D";
   8
   9     document.getElementById("div").innerHTML = "<span>replacement content</span>";
  10
  11     // create lots of objects to force a garbage collection
  12     var i = 0;
  13     var s;
  14     while (i < 5000) {
  15         i = i+1.11;
  16         s = s + " ";
  17     }
  18
  19     var output= document.getElementById("output");
  20
  21     output.innerHTML += B.customProperty + "<BR>";
  22     if (B.nextSibling) {
  23         output.innerHTML += B.nextSibling.customProperty + "<BR>";
  24     }
  25 }
  26
  27 if (window.testRunner) {
  28     testRunner.dumpAsText();
  29 }
  30
  31 </script>
  32 </head>
  33
  34 <body onload="doit()">
  35 <div style="border: 1px solid red">
  36 <p>
  37 This test verifies that DOM nodes are retained because a wrapper exists and is protected for a sibling. A wrapper need not exist for the node itself or for an ancestor.
  38 </p>
  39 <p>
  40 The output should be the following pieces of text on lines by themselves: "replacement content", "B", "D".
  41 </p>
  42 </div>
  43 <div id="div">
  44 <span id="span-A"><span id="span-B"><span id="span-C">original span</span></span>
  45 <span id="span-D"> xx </span>
  46 </span>
  47 </div>
  48 <div id="output">
  49 </div>
  50 </body>