2d.imageData.create2.negative.html (1339B)
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>OffscreenCanvas test: 2d.imageData.create2.negative</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 9 <h1>2d.imageData.create2.negative</h1> 10 <p class="desc">createImageData(sw, sh) takes the absolute magnitude of the size arguments</p> 11 12 13 <script> 14 var t = async_test("createImageData(sw, sh) takes the absolute magnitude of the size arguments"); 15 var t_pass = t.done.bind(t); 16 var t_fail = t.step_func(function(reason) { 17 throw reason; 18 }); 19 t.step(function() { 20 21 var canvas = new OffscreenCanvas(100, 50); 22 var ctx = canvas.getContext('2d'); 23 24 var imgdata1 = ctx.createImageData(10, 20); 25 var imgdata2 = ctx.createImageData(-10, 20); 26 var imgdata3 = ctx.createImageData(10, -20); 27 var imgdata4 = ctx.createImageData(-10, -20); 28 _assertSame(imgdata1.data.length, imgdata2.data.length, "imgdata1.data.length", "imgdata2.data.length"); 29 _assertSame(imgdata2.data.length, imgdata3.data.length, "imgdata2.data.length", "imgdata3.data.length"); 30 _assertSame(imgdata3.data.length, imgdata4.data.length, "imgdata3.data.length", "imgdata4.data.length"); 31 t.done(); 32 33 }); 34 </script>