layout/reftests/canvas/ctm-sanity.html@ac0c01689b40
layout/reftests/canvas/ctm-sanity.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 <html>
2 <head>
3 <script type="text/javascript">
5 function assert(cond, msg) { if (!cond) { throw msg; } }
7 function isSameTM(m1, m2) {
8 // XXX this is probably the ugliest possible way to write this function,
9 // but it's intended to be lowest-common-denominator
10 if (!(m1.length === 6 && m1.length === m2.length)) {
11 return false;
12 }
13 for (var i = 0; i < m1.length; ++i) {
14 if (m1[i] !== m2[i]) {
15 return false;
16 }
17 }
18 return true;
19 }
21 window.onload = function() {
22 var IM = [ 1, 0, 0, 1, 0, 0 ];
24 try {
25 var ctx = document.getElementById("c1").getContext("2d");
27 assert(isSameTM(IM, ctx.mozCurrentTransform),
28 "currentTransform is identity by default");
29 assert(isSameTM(IM, ctx.mozCurrentTransformInverse),
30 "currentTransformInverse is identity by default");
32 var m = [ 1, 2, 3, 4, 5, 6 ];
33 ctx.mozCurrentTransform = m;
34 assert(isSameTM(m, ctx.mozCurrentTransform),
35 "currentTransform successfully set");
36 var badVals = [ -1,
37 "string",
38 { obj: true },
39 [ "array of string" ],
40 [ -1 ],
41 [ "string", 1, 2, 3, 4, 5 ],
42 [ { obj: true }, 1, 2, 3, 4, 5 ],
43 ];
44 for (var i = 0; i < badVals.length; ++i) {
45 var error = false;
46 try { ctx.mozCurrentTransform = badVals[i]; }
47 catch(e) { error = true; }
48 assert(error && isSameTM(m, ctx.mozCurrentTransform),
49 "Expected |currentTransform = "+ badVals[i] +"| to throw exception and not change .currentTransform");
51 error = false;
52 try { ctx.mozCurrentTransformInverse = badVals[i]; }
53 catch(e) { error = true; }
54 assert(error && isSameTM(m, ctx.mozCurrentTransform),
55 "Expected |currentTransformInverse = "+ badVals[i] +"| to throw exception and not change .currentTransform");
56 }
57 ctx.mozCurrentTransform = IM;
59 var noopVals = [ [ Number.NaN, 1, 2, 3, 4, 5 ],
60 [ Infinity, 1, 2, 3, 4, 5 ],
61 ];
62 for (var i = 0; i < noopVals.length; ++i) {
63 ctx.mozCurrentTransform = noopVals[i];
64 assert(isSameTM(ctx.mozCurrentTransform, IM),
65 "Illegal float values result in no-ops (sigh)");
66 }
67 ctx.mozCurrentTransform = IM;
69 ctx.setTransform(m[0], m[1], m[2], m[3], m[4], m[5]);
70 assert(isSameTM(ctx.mozCurrentTransform, m),
71 "setTransform() updates currentTransform");
72 } catch (e) {
73 document.body.innerHTML = "FAIL: "+ e.toString();
74 return;
75 }
76 document.body.innerHTML = "Pass";
77 }
78 </script>
79 </head>
80 <body>
81 <div><canvas id="c1" width="300" height="300"></canvas></div>
82 </body>
83 </html>
