third_party/WebKit/LayoutTests/http/tests/misc/image-onerror-no-load-event.html

   1 <!doctype html>
   2 <html>
   3 <head>
   4 <script src="/js-test-resources/js-test.js"></script>
   5 </head>
   6 <body>
   7 <script>
   8 description("Tests if repeated loading of non-existent img.src resources doesn't deliver onload.");
   9
  10 window.jsTestIsAsync = true;
  11 if (window.testRunner) {
  12     testRunner.dumpAsText();
  13     testRunner.waitUntilDone();
  14 }
  15
  16 function finish(final)
  17 {
  18     // Test handling for missing image resources and
  19     // ones that load, but with status 404.
  20     if (!final) {
  21         testImageOnError(true);
  22         return;
  23     }
  24     window.finishJSTest();
  25 }
  26
  27 function testImageOnError(broken)
  28 {
  29     var img = new Image();
  30     img.expectOnLoad = broken;
  31     img.onload = function() {
  32         if (img.expectOnLoad)
  33             testPassed("Received onload for broken img.src");
  34         else
  35             testFailed("Received onload for non-existent img.src");
  36
  37         finish(img.expectOnLoad);
  38     };
  39     img.onerror = function () {
  40         if (img.expectOnLoad) {
  41             img.onerror = null;
  42             testFailed("Received onload for boken img.src");
  43             finish(img.expectOnLoad);
  44             return;
  45         }
  46         else
  47             testPassed("Received onerror for non-existent img.src");
  48
  49         if (img.haveFailedAlready) {
  50             img.onerror = null;
  51             testPassed("Received error event repeatedly.");
  52             finish(img.expectOnLoad);
  53             return;
  54         }
  55         img.haveFailedAlready = true;
  56         img.src = "invalidinvalid2.jpg";
  57     };
  58     img.src = broken ? "resources/404image.php" : "resources/non-existent.png";
  59 }
  60 testImageOnError(false);
  61 </script>
  62 <div id="console"></div>
  63 </body>
  64 </html>