third_party/WebKit/LayoutTests/http/tests/xmlhttprequest/event-target.html

   1 <html>
   2 <body>
   3 <p>Tests for <a href="https://bugs.webkit.org/show_bug.cgi?id=11053"> bug 11053</a> -
   4 XMLHttpRequest should be an EventTarget.</p>
   5 <script>
   6     if (window.testRunner)
   7         testRunner.dumpAsText();
   8
   9     var console_messages = document.createElement("ul");
  10     document.body.appendChild(console_messages);
  11
  12     function log(message)
  13     {
  14         var item = document.createElement("li");
  15         item.appendChild(document.createTextNode(message));
  16         console_messages.appendChild(item);
  17     }
  18
  19
  20     function onLoad() {
  21         log("onload: this = " + this);
  22         req.removeEventListener("load", eventListener4, false);
  23     }
  24
  25     function eventListener() { log("eventListener: this = " + this); }
  26
  27     function eventListener2() {
  28         log("eventListener2: this = " + this);
  29         // Removing this event listener should prevent it from firing.
  30         req.removeEventListener("load", eventListener3, false);
  31     }
  32
  33     function eventListener3() { log("eventListener3: this = " + this); }
  34
  35     // This listener is removed before it gets a chance to fire.
  36     function eventListener4() { log("eventListener4: this = " + this); }
  37
  38     function fooListener() { log("fooListener: this = " + this); }
  39
  40
  41     req = new XMLHttpRequest;
  42     req.onload = onLoad;
  43     req.addEventListener("load", eventListener, false);
  44     req.addEventListener("load", eventListener2, false);
  45     req.addEventListener("load", eventListener, false); // eventListener must not be called  twice, but it does in Mozilla 1.8.
  46     req.addEventListener("load", eventListener3, false);
  47
  48     // XMLHttpRequest.dispatchEvent is not implemeted in Mozilla 1.8
  49     // Furthermore, they raise an exception when trying to add any event listener except for "load" and "error".
  50     try {
  51         event = document.createEvent("Event");
  52         event.initEvent("foo", false, false);
  53         req.addEventListener("foo", fooListener, false);
  54         req.dispatchEvent(event);
  55     } catch (ex) {
  56         log("foo: " + ex);
  57     }
  58
  59     req.open("GET", "resources/reply.xml", false);
  60     req.send("");
  61
  62     // WebKit doesn't remove event listeners when re-opening a request, unlike Mozilla.
  63     req.open("GET", "resources/reply.xml", false);
  64     req.send("");
  65
  66 </script>
  67 </body>
  68 </html>