2d.imageData.create2.initial.html (1406B)
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.create2.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.create2.initial</h1> 12 <p class="desc">createImageData(sw, sh) 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(sw, sh) returns transparent black data of the right size"); 21 _addTest(function(canvas, ctx) { 22 23 var imgdata = ctx.createImageData(10, 20); 24 _assertSame(imgdata.data.length, imgdata.width*imgdata.height*4, "imgdata.data.length", "imgdata.width*imgdata.height*4"); 25 _assert(imgdata.width < imgdata.height, "imgdata.width < imgdata.height"); 26 _assert(imgdata.width > 0, "imgdata.width > 0"); 27 var isTransparentBlack = true; 28 for (var i = 0; i < imgdata.data.length; ++i) 29 if (imgdata.data[i] !== 0) 30 isTransparentBlack = false; 31 _assert(isTransparentBlack, "isTransparentBlack"); 32 33 }); 34 </script>