LayoutTests/plugins/npobject-js-wrapper-destroyed-after-plugin-unload.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4     <script>
   5         function startTest() {
   6             if (window.layoutTestController) {
   7                 layoutTestController.dumpAsText();
   8                 layoutTestController.waitUntilDone();
   9             }
  10
  11             // Access all objects/properties that we're going to use later in the test so that JS
  12             // allocations only happen when we expect.
  13             var body = document.body;
  14             body.removeChild;
  15             var plugin = body.getElementsByTagName('embed')[0];
  16             var testObject = plugin.testObject;
  17             setTimeout;
  18
  19             testObject = null;
  20
  21             // Allocate a bunch of JS memory. This should cause testObject to be finalized, but it's
  22             // destructor shouldn't run until the GCController.collect call we make later.
  23             var array = new Array(10000);
  24             for (var i = 0; i < 10000; ++i)
  25                 array[i] = new Object();
  26
  27             // Remove the plugin and wait for a little bit to ensure it has been unloaded (WebKit1
  28             // on Windows unloads plugins after a delay).
  29             body.removeChild(plugin);
  30             setTimeout(finishTest, 250);
  31         }
  32
  33         function finishTest() {
  34             // Force a GC. If we don't crash here, we've passed the test.
  35             if (window.GCController)
  36                 GCController.collect();
  37
  38             document.body.appendChild(document.createTextNode('PASSED'));
  39
  40             if (window.layoutTestController)
  41                 layoutTestController.notifyDone();
  42         }
  43
  44         addEventListener('load', startTest, false);
  45     </script>
  46 </head>
  47 <body>
  48     <p>This test will only work in DumpRenderTree/WebKitTestRunner.</p>
  49     <embed type="application/x-webkit-test-netscape">
  50 </body>
  51 </html>