testing/mochitest/tests/SimpleTest/WindowSnapshot.js@6474c204b198
testing/mochitest/tests/SimpleTest/WindowSnapshot.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 var gWindowUtils;
3 try {
4 gWindowUtils = SpecialPowers.getDOMWindowUtils(window);
5 if (gWindowUtils && !gWindowUtils.compareCanvases)
6 gWindowUtils = null;
7 } catch (e) {
8 gWindowUtils = null;
9 }
11 function snapshotWindow(win, withCaret) {
12 return SpecialPowers.snapshotWindow(win, withCaret);
13 }
15 // If the two snapshots don't compare as expected (true for equal, false for
16 // unequal), returns their serializations as data URIs. In all cases, returns
17 // whether the comparison was as expected.
18 function compareSnapshots(s1, s2, expected) {
19 var s1Str, s2Str;
20 var correct = false;
21 if (gWindowUtils) {
22 // First, check that the canvases are the same size.
23 var equal;
24 if (s1.width != s2.width || s1.height != s2.height) {
25 equal = false;
26 } else {
27 try {
28 equal = (gWindowUtils.compareCanvases(s1, s2, {}) == 0);
29 } catch (e) {
30 equal = false;
31 ok(false, "Exception thrown from compareCanvases: " + e);
32 }
33 }
34 correct = (equal == expected);
35 }
37 if (!correct) {
38 s1Str = s1.toDataURL();
39 s2Str = s2.toDataURL();
41 if (!gWindowUtils) {
42 correct = ((s1Str == s2Str) == expected);
43 }
44 }
46 return [correct, s1Str, s2Str];
47 }
49 function assertSnapshots(s1, s2, expected, s1name, s2name) {
50 var [correct, s1Str, s2Str] = compareSnapshots(s1, s2, expected);
51 var sym = expected ? "==" : "!=";
52 ok(correct, "reftest comparison: " + sym + " " + s1name + " " + s2name);
53 if (!correct) {
54 var report = "REFTEST TEST-UNEXPECTED-FAIL | " + s1name + " | image comparison (" + sym + ")\n";
55 if (expected) {
56 report += "REFTEST IMAGE 1 (TEST): " + s1Str + "\n";
57 report += "REFTEST IMAGE 2 (REFERENCE): " + s2Str + "\n";
58 } else {
59 report += "REFTEST IMAGE: " + s1Str + "\n";
60 }
61 dump(report);
62 }
63 }
