image/test/mochitest/test_drawDiscardedImage.html@ac0c01689b40
image/test/mochitest/test_drawDiscardedImage.html
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 <!DOCTYPE HTML>
2 <html>
3 <!--
4 https://bugzilla.mozilla.org/show_bug.cgi?id=731419
5 -->
6 <head>
7 <title>Test for Bug 731419 - Draw an ostensibly discarded image to a canvas</title>
8 <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
9 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
10 </head>
12 <body>
14 <!--
15 Load an image in an iframe, then draw that image to a canvas. Then set the
16 iframe to display:none (after bug 731419, this causes the image's decoded
17 data to be discarded) and draw the image to a canvas again. We should draw
18 the same image data both times.
19 -->
21 <script>
23 SimpleTest.waitForExplicitFinish();
25 var data1;
27 function drawImage()
28 {
29 var canvas = document.getElementById('canvas');
30 var ctx = canvas.getContext('2d');
31 var iframeDoc = document.getElementById('iframe').contentDocument;
33 ctx.clearRect(0, 0, canvas.height, canvas.width);
34 ctx.drawImage(iframeDoc.getElementById('image'), 0, 0);
35 return canvas.toDataURL();
36 }
38 function iframeLoad()
39 {
40 data1 = drawImage();
41 document.getElementById('iframe').style.display = 'none';
43 // Spin the event loop a few times to give the image in the display:none
44 // iframe a chance to be discarded.
45 SimpleTest.executeSoon(function() {
46 SimpleTest.executeSoon(function() {
47 SimpleTest.executeSoon(function() {
48 step2();
49 });
50 });
51 });
52 }
54 function step2()
55 {
56 is(drawImage(), data1, "Same image before and after iframe display:none");
57 SimpleTest.finish();
58 }
60 </script>
62 <canvas id='canvas'></canvas>
64 <iframe id='iframe' onload='iframeLoad()' src='data:text/html,<img id="image"
65 src="data:image/png;base64,
66 iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAADRElEQVQ4EQXBTWgcZQCA4ff7ZmZ3
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68 acSmMakxtfkx/5tNdmd35/8bn0cAzJ7IXwKGH/q8NDF48vy+7vk/3tzVXDs8nj9cAAiDcD70gwVi
69 vvvr4tsjAAAAAmD2RD4GOL34wge21XHsnHWh9/aUjX1pC4C1UpXrP08zN7vMvvujPx3P/PD+0VH3
70 BoAcTspXAbK9iuGe78+csy70ZnsVvh+xWQ8p1QI8dNK7CiT9CmeO28/4ZsuVX9/IvQwgmzLaU9LS
71 AGh/3KJ5jw6A6ynyL7Xx7UCORiwQGRN0g7C4m4FX9poNV35681ShU6ZbxKDRLJVuZQl9RdSQRB4c
72 OtDGoQNtPGHBuh0SaAa+ZvLjHYt8fwfZrpTl2cFp2ZwVDyQzSgLgVIndGN/tIP/c61y/WWb14gaV
73 asTWioPSDabnfCqVkK7BHKHtPK0n06oFGQHgewJtbw8AujGNkYTNpTJxbYfaygqR0piYkaRkhMya
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79 52o0ogF8c5/ltMlGIlYHo0qQrq9HxHWFvx3RqCoCFzwn4L+tiIVV5Y5MhWc/mlDnATQAgMkynbMb
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81 RfHGYhTfvRfF48BdYB3YAPgfnOuE39kFlREAAAAASUVORK5CYII=">'></iframe>
83 </body>
84 </html>
