2d.imageData.create1.initial.html (1543B)
1 <!DOCTYPE html> 2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> 3 <meta charset="UTF-8"> 4 <title>Canvas test: 2d.imageData.create1.initial</title> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <script src="/html/canvas/resources/canvas-tests.js"></script> 8 <link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css"> 9 <body class="show_output"> 10 11 <h1>2d.imageData.create1.initial</h1> 12 <p class="desc">createImageData(imgdata) returns transparent black data of the right size</p> 13 14 15 <p class="output">Actual output:</p> 16 <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> 17 18 <ul id="d"></ul> 19 <script> 20 var t = async_test("createImageData(imgdata) returns transparent black data of the right size"); 21 _addTest(function(canvas, ctx) { 22 23 ctx.fillStyle = '#0f0'; 24 ctx.fillRect(0, 0, 100, 50); 25 var imgdata1 = ctx.getImageData(0, 0, 10, 20); 26 var imgdata2 = ctx.createImageData(imgdata1); 27 _assertSame(imgdata2.data.length, imgdata1.data.length, "imgdata2.data.length", "imgdata1.data.length"); 28 _assertSame(imgdata2.width, imgdata1.width, "imgdata2.width", "imgdata1.width"); 29 _assertSame(imgdata2.height, imgdata1.height, "imgdata2.height", "imgdata1.height"); 30 var isTransparentBlack = true; 31 for (var i = 0; i < imgdata2.data.length; ++i) 32 if (imgdata2.data[i] !== 0) 33 isTransparentBlack = false; 34 _assert(isTransparentBlack, "isTransparentBlack"); 35 36 }); 37 </script>