2d.imageData.object.readonly.html (1490B)
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.object.readonly</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.object.readonly</h1> 12 <p class="desc">ImageData objects properties are read-only</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("ImageData objects properties are read-only"); 21 _addTest(function(canvas, ctx) { 22 23 var imgdata = ctx.getImageData(0, 0, 10, 10); 24 var w = imgdata.width; 25 var h = imgdata.height; 26 var d = imgdata.data; 27 imgdata.width = 123; 28 imgdata.height = 123; 29 imgdata.data = [100,100,100,100]; 30 _assertSame(imgdata.width, w, "imgdata.width", "w"); 31 _assertSame(imgdata.height, h, "imgdata.height", "h"); 32 _assertSame(imgdata.data, d, "imgdata.data", "d"); 33 _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); 34 _assertSame(imgdata.data[1], 0, "imgdata.data[\""+(1)+"\"]", "0"); 35 _assertSame(imgdata.data[2], 0, "imgdata.data[\""+(2)+"\"]", "0"); 36 _assertSame(imgdata.data[3], 0, "imgdata.data[\""+(3)+"\"]", "0"); 37 38 }); 39 </script>