The Tor Browser: content/base/test/test_fileapi_slice.html@b8a032363ba2 (annotated)

content/base/test/test_fileapi_slice.html@b8a032363ba2 (annotated)

content/base/test/test_fileapi_slice.html

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 <!DOCTYPE HTML>
 <html>
 <head>
 <!--
 https://bugzilla.mozilla.org/show_bug.cgi?id=575946
 -->
   <title>Test for Bug 575946</title>
   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   <script type="text/javascript" src="fileutils.js"></script>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
 </head>
 <body>
 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=575946">Mozilla Bug 575946</a>
 <p id="display">
   <canvas id=canvas width=1100 height=1100 hidden moz-opaque></canvas>
   <canvas id=testcanvas hidden moz-opaque></canvas>
   <input id="fileList" type="file"></input>
 </p>
 <div id="content" style="display: none">
 </div>
 <pre id="test">
 <script class="testbody" type="text/javascript">
 const isOSXMtnLion = navigator.userAgent.indexOf("Mac OS X 10.8") != -1;
 if (isOSXMtnLion) {
   todo(false, "Mountain Lion doesn't like this test (bug 788999)");
 } else {
 var fileNum = 1;
 SimpleTest.waitForExplicitFinish();
 // Create files containing data we'll test with. We'll want long
 // strings to ensure they span multiple buffers while loading
 // Create a decent-sized image
 cx = $("canvas").getContext('2d');
 var s = cx.canvas.width;
 var grad = cx.createLinearGradient(0, 0, s-1, s-1);
 for (i = 0; i < 0.95; i += .1) {
   grad.addColorStop(i, "white");
   grad.addColorStop(i + .05, "black");
 }
 grad.addColorStop(1, "white");
 cx.fillStyle = grad;
 cx.fillRect(0, 0, s-1, s-1);
 cx.fillStyle = "rgba(200, 0, 0, 0.9)";
 cx.fillRect(.1 * s, .1 * s, .7 * s, .7 * s);
 cx.strokeStyle = "rgba(0, 0, 130, 0.5)";
 cx.lineWidth = .14 * s;
 cx.beginPath();
 cx.arc(.6 * s, .6 * s, .3 * s, 0, Math.PI*2, true);
 cx.stroke();
 cx.closePath();
 cx.fillStyle = "rgb(0, 255, 0)";
 cx.beginPath();
 cx.arc(.1 * s, .8 * s, .1 * s, 0, Math.PI*2, true);
 cx.fill();
 cx.closePath();
 var fileData =
   atob(cx.canvas.toDataURL("image/png").substring("data:text/png;base64,".length + 1));
 var memFile = cx.canvas.mozGetAsFile("image/png");
 var fileFile = createFileWithData(fileData);
 var size = fileData.length;
 // This might fail if we dramatically improve the png encoder. If that happens
 // please increase the complexity or size of the image generated above to ensure
 // that we're testing with files that are large enough.
 ok(size > 65536, "test data sufficiently large");
 // Test that basic properties work
 testSlice(memFile, size, "image/png", fileData, "memFile");
 testSlice(fileFile, size, "", fileData, "fileFile");
 // Try loading directly from slice into an image
 var testBinaryData = "";
 for (var i = 0; i < 256; i++) {
   testBinaryData += String.fromCharCode(i);
 }
 while (testBinaryData.length < 20000) {
   testBinaryData += testBinaryData;
 }
 function imageLoadHandler(event) {
   var origcanvas = $("canvas");
   var testcanvas = $("testcanvas");
   var image = event.target;
   is(image.naturalWidth, origcanvas.width, "width correct");
   is(image.naturalHeight, origcanvas.height, "height correct");
   testcanvas.width = origcanvas.width;
   testcanvas.height = origcanvas.height;
   testcanvas.getContext("2d").drawImage(image, 0, 0);
   // Do not use |is(testcanvas.toDataURL("image/png"), origcanvas.toDataURL("image/png"), "...");| that results in a _very_ long line.
   var origDataURL = origcanvas.toDataURL("image/png");
   var testDataURL = testcanvas.toDataURL("image/png");
   is(testDataURL.length, origDataURL.length,
      "Length of correct image data");
   ok(testDataURL == origDataURL,
      "Content of correct image data");
   testHasRun();
 }
 // image in the middle
 var imgfile = createFileWithData(testBinaryData + fileData + testBinaryData);
 is(imgfile.size, size + testBinaryData.length * 2, "correct file size (middle)");
 var img = new Image;
 img.src = URL.createObjectURL(imgfile.slice(testBinaryData.length, testBinaryData.length + size));
 img.onload = imageLoadHandler;
 expectedTestCount++;
 // image at start
 var imgfile = createFileWithData(fileData + testBinaryData);
 is(imgfile.size, size + testBinaryData.length, "correct file size (start)");
 var img = new Image;
 img.src = URL.createObjectURL(imgfile.slice(0, size));
 img.onload = imageLoadHandler;
 expectedTestCount++;
 // image at end
 var imgfile = createFileWithData(testBinaryData + fileData);
 is(imgfile.size, size + testBinaryData.length, "correct file size (end)");
 var img = new Image;
 img.src = URL.createObjectURL(imgfile.slice(testBinaryData.length, testBinaryData.length + size));
 img.onload = imageLoadHandler;
 expectedTestCount++;
 // image past end
 var imgfile = createFileWithData(testBinaryData + fileData);
 is(imgfile.size, size + testBinaryData.length, "correct file size (past end)");
 var img = new Image;
 img.src = URL.createObjectURL(imgfile.slice(testBinaryData.length, testBinaryData.length + size + 1000));
 img.onload = imageLoadHandler;
 expectedTestCount++;
 }
 </script>
 </pre>
 </body> </html>

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content/base/test/test_fileapi_slice.html@b8a032363ba2 (annotated)

content/base/test/test_fileapi_slice.html