The Tor Browser / file comparison

comparison: content/base/test/test_fileapi_slice.html

content/base/test/test_fileapi_slice.html

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1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <!--
5 https://bugzilla.mozilla.org/show_bug.cgi?id=575946
6 -->
7 <title>Test for Bug 575946</title>
8 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
9 <script type="text/javascript" src="fileutils.js"></script>
10 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
11 </head>
12
13 <body>
14 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=575946">Mozilla Bug 575946</a>
15 <p id="display">
16 <canvas id=canvas width=1100 height=1100 hidden moz-opaque></canvas>
17 <canvas id=testcanvas hidden moz-opaque></canvas>
18 <input id="fileList" type="file"></input>
19 </p>
20 <div id="content" style="display: none">
21 </div>
22
23 <pre id="test">
24 <script class="testbody" type="text/javascript">
25 const isOSXMtnLion = navigator.userAgent.indexOf("Mac OS X 10.8") != -1;
26
27 if (isOSXMtnLion) {
28 todo(false, "Mountain Lion doesn't like this test (bug 788999)");
29 } else {
30 var fileNum = 1;
31 SimpleTest.waitForExplicitFinish();
32
33 // Create files containing data we'll test with. We'll want long
34 // strings to ensure they span multiple buffers while loading
35
36 // Create a decent-sized image
37 cx = $("canvas").getContext('2d');
38 var s = cx.canvas.width;
39 var grad = cx.createLinearGradient(0, 0, s-1, s-1);
40 for (i = 0; i < 0.95; i += .1) {
41 grad.addColorStop(i, "white");
42 grad.addColorStop(i + .05, "black");
43 }
44 grad.addColorStop(1, "white");
45 cx.fillStyle = grad;
46 cx.fillRect(0, 0, s-1, s-1);
47 cx.fillStyle = "rgba(200, 0, 0, 0.9)";
48 cx.fillRect(.1 * s, .1 * s, .7 * s, .7 * s);
49 cx.strokeStyle = "rgba(0, 0, 130, 0.5)";
50 cx.lineWidth = .14 * s;
51 cx.beginPath();
52 cx.arc(.6 * s, .6 * s, .3 * s, 0, Math.PI*2, true);
53 cx.stroke();
54 cx.closePath();
55 cx.fillStyle = "rgb(0, 255, 0)";
56 cx.beginPath();
57 cx.arc(.1 * s, .8 * s, .1 * s, 0, Math.PI*2, true);
58 cx.fill();
59 cx.closePath();
60
61
62 var fileData =
63 atob(cx.canvas.toDataURL("image/png").substring("data:text/png;base64,".length + 1));
64 var memFile = cx.canvas.mozGetAsFile("image/png");
65 var fileFile = createFileWithData(fileData);
66 var size = fileData.length;
67
68 // This might fail if we dramatically improve the png encoder. If that happens
69 // please increase the complexity or size of the image generated above to ensure
70 // that we're testing with files that are large enough.
71 ok(size > 65536, "test data sufficiently large");
72
73
74 // Test that basic properties work
75 testSlice(memFile, size, "image/png", fileData, "memFile");
76 testSlice(fileFile, size, "", fileData, "fileFile");
77
78
79 // Try loading directly from slice into an image
80 var testBinaryData = "";
81 for (var i = 0; i < 256; i++) {
82 testBinaryData += String.fromCharCode(i);
83 }
84 while (testBinaryData.length < 20000) {
85 testBinaryData += testBinaryData;
86 }
87 function imageLoadHandler(event) {
88 var origcanvas = $("canvas");
89 var testcanvas = $("testcanvas");
90 var image = event.target;
91 is(image.naturalWidth, origcanvas.width, "width correct");
92 is(image.naturalHeight, origcanvas.height, "height correct");
93
94 testcanvas.width = origcanvas.width;
95 testcanvas.height = origcanvas.height;
96 testcanvas.getContext("2d").drawImage(image, 0, 0);
97 // Do not use |is(testcanvas.toDataURL("image/png"), origcanvas.toDataURL("image/png"), "...");| that results in a _very_ long line.
98 var origDataURL = origcanvas.toDataURL("image/png");
99 var testDataURL = testcanvas.toDataURL("image/png");
100 is(testDataURL.length, origDataURL.length,
101 "Length of correct image data");
102 ok(testDataURL == origDataURL,
103 "Content of correct image data");
104
105 testHasRun();
106 }
107
108 // image in the middle
109 var imgfile = createFileWithData(testBinaryData + fileData + testBinaryData);
110 is(imgfile.size, size + testBinaryData.length * 2, "correct file size (middle)");
111 var img = new Image;
112 img.src = URL.createObjectURL(imgfile.slice(testBinaryData.length, testBinaryData.length + size));
113 img.onload = imageLoadHandler;
114 expectedTestCount++;
115
116 // image at start
117 var imgfile = createFileWithData(fileData + testBinaryData);
118 is(imgfile.size, size + testBinaryData.length, "correct file size (start)");
119 var img = new Image;
120 img.src = URL.createObjectURL(imgfile.slice(0, size));
121 img.onload = imageLoadHandler;
122 expectedTestCount++;
123
124 // image at end
125 var imgfile = createFileWithData(testBinaryData + fileData);
126 is(imgfile.size, size + testBinaryData.length, "correct file size (end)");
127 var img = new Image;
128 img.src = URL.createObjectURL(imgfile.slice(testBinaryData.length, testBinaryData.length + size));
129 img.onload = imageLoadHandler;
130 expectedTestCount++;
131
132 // image past end
133 var imgfile = createFileWithData(testBinaryData + fileData);
134 is(imgfile.size, size + testBinaryData.length, "correct file size (past end)");
135 var img = new Image;
136 img.src = URL.createObjectURL(imgfile.slice(testBinaryData.length, testBinaryData.length + size + 1000));
137 img.onload = imageLoadHandler;
138 expectedTestCount++;
139 }
140 </script>
141 </pre>
142 </body> </html>

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