third_party/WebKit/LayoutTests/fast/dom/Window/window-lookup-precedence.html

   1 <html>
   2 <head>
   3 <script src="../../../resources/js-test.js"></script>
   4 <script type="text/javascript" src="resources/window-properties.js"></script>
   5 </head>
   6 <body>
   7 <p id="description"></p>
   8
   9 <br>
  10 <iframe src="about:blank"></iframe>
  11
  12 <br>
  13 <form>
  14 <input id="MYINPUT" value="Hello World" type="text"/>
  15 </form>
  16
  17 <div id="console"></div>
  18
  19 <script>
  20 description('Tests lookup precedence for properties on Window objects in the presence of a child frame, and that IDL properties defined in the prototype (window.location, window.focus, etc) have higher lookup precedence than named document elements (such as input elements).');
  21
  22 var win = window.window;
  23 var myInput = document.getElementById("MYINPUT");
  24 var subframe = win.frames[0];
  25
  26 function checkValue(name, original) {
  27     // Handle a correct Location, as well as any numerical values (screenX and
  28     // so on), separately to avoid depending on the test file or window
  29     // location.
  30     if ((name.toLowerCase() == "location" || typeof original == "number")
  31         && win[name] == original)
  32         testPassed("win['" + name + "'] matched original");
  33     else
  34         shouldEvaluateTo("win['" + name + "']", original);
  35 }
  36
  37 function check(prop) {
  38     var name = prop[0];
  39     var original = win[name];
  40     if (name != "location") { // Avoid navigating the subframe.
  41       // Check subframe precedence.
  42       try {
  43         subframe[name] = name;
  44       } catch (e) {
  45         debug("Unable to set subframe[" + name + "]: " + e);
  46       }
  47     }
  48     checkValue(name, original);
  49
  50     // Check prototype precedence.
  51     myInput.setAttribute("id", name);
  52     checkValue(name, original);
  53 }
  54
  55 var originalWindowOnError = window.onerror;
  56 window.onerror = null;
  57
  58 for (var i = 0; i < propertyInfo.length; ++i) {
  59     check(propertyInfo[i]);
  60 }
  61
  62 window.onerror = originalWindowOnError ;
  63
  64 </script>
  65 </body>
  66 </html>