third_party/WebKit/LayoutTests/fast/files/blob-close-revoke.html

   1 <!doctype html>
   2 <script src="../../resources/js-test.js"></script>
   3 <script src="resources/read-common.js"></script>
   4 <script>
   5 description("Test the Blob.close() method, revoking.");
   6
   7 window.jsTestIsAsync = true;
   8
   9 function base64ToUint8Array(a)
  10 {
  11     var binary = window.atob(a);
  12     var buffer = new Uint8Array(binary.length);
  13     for (var i = 0; i < binary.length; i++)
  14         buffer[i] = binary.charCodeAt(i);
  15
  16     return buffer;
  17 }
  18
  19 var pngBase64 = "iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAIAAAD/gAIDAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAnklEQVR42u3QMQEAAAgDoGlyo1vBzwciUJlw1ApkyZIlS5YsBbJkyZIlS5YCWbJkyZIlS4EsWbJkyZKlQJYsWbJkyVIgS5YsWbJkKZAlS5YsWbIUyJIlS5YsWQpkyZIlS5YsBbJkyZIlS5YCWbJkyZIlS4EsWbJkyZKlQJYsWbJkyVIgS5YsWbJkKZAlS5YsWbIUyJIlS5YsWQpkyfq2MosBSIeKONMAAAAASUVORK5CYII=";
  20
  21 var blobContents = [base64ToUint8Array(pngBase64)];
  22
  23 var blob;
  24 var blobURL1;
  25 var blobURL2;
  26 var img;
  27 var worker;
  28 var blobURLs = [];
  29
  30 function testRevokeAfterCloseWorkers()
  31 {
  32     debug("Test that dereferencing URLs referring to closed Blobs fail, workers.");
  33     blob = new Blob(["postMessage('FAIL');"], {type: "application/javascript"});
  34     for (var i = 0; i < 10; i++)
  35         blobURLs.push(window.URL.createObjectURL(blob));
  36
  37     // First check that the Blob URL can be used by a Worker,
  38     // then close it and verify that the rest cannot.
  39
  40     function onNonClosedError() {
  41         testFailed("Worker failed to load from Blob.");
  42         blob.close();
  43         testNextWorker();
  44     }
  45     function onNonClosedMessage() {
  46         testPassed("Worker loaded.");
  47         blob.close();
  48         testNextWorker();
  49     }
  50     function onClosedError() {
  51         testPassed("Error triggered on starting Worker from a closed Blob.");
  52         testNextWorker();
  53     }
  54     function onClosedMessage() {
  55         testFailed("Worker loaded.");
  56         testNextWorker();
  57     }
  58
  59     function testNextWorker(onerror, onmessage) {
  60         var u = blobURLs.shift();
  61         if (u) {
  62             worker = new Worker(u);
  63             worker.onerror = onerror ? onerror : onClosedError;
  64             worker.onmessage = onmessage ? onmessage : onClosedMessage;
  65         } else {
  66             runNextTest();
  67         }
  68     }
  69     testNextWorker(onNonClosedError, onNonClosedMessage);
  70 }
  71
  72 function testRevokeAfterClose()
  73 {
  74     debug("Test that dereferencing URLs referring to closed Blobs fail.");
  75     blob = new Blob(blobContents, {type: "image/png"});
  76     img = document.createElement("img");
  77     img.onerror = function (e) {
  78         testPassed("Error triggered on loading image from closed Blob.");
  79         runNextTest();
  80     };
  81     img.onload = function () {
  82         testFailed("Image loaded");
  83         runNextTest();
  84     };
  85     blobURL1 = window.URL.createObjectURL(blob);
  86     // create some more Blob URLs.
  87     for (var i = 0; i < 10; i++)
  88         window.URL.createObjectURL(blob);
  89     // Make them all inaccessible.
  90     blob.close();
  91     img.src = blobURL1;
  92 }
  93
  94 function testCreateAfterClose()
  95 {
  96     debug("Test creating object URLs on closed Blobs");
  97     blob = new Blob(["body{background: green}"], {type: "text/css"});
  98     blob.close();
  99     shouldThrow("window.URL.createObjectURL(blob);");
 100     runNextTest();
 101 }
 102
 103 var tests = [
 104     testRevokeAfterClose,
 105     testRevokeAfterCloseWorkers,
 106     testCreateAfterClose ];
 107
 108 function runNextTest()
 109 {
 110     if (!tests.length) {
 111         finishJSTest();
 112         return;
 113     }
 114     tests.shift()();
 115 }
 116 </script>
 117 <body onload="runNextTest()">
 118 </body>