2d.drawImage.zerosource.html (1106B)
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.drawImage.zerosource</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.drawImage.zerosource</h1> 10 <p class="desc">drawImage with zero-sized source rectangle draws nothing without exception</p> 11 12 13 <script> 14 promise_test(async t => { 15 16 var canvas = new OffscreenCanvas(100, 50); 17 var ctx = canvas.getContext('2d'); 18 19 ctx.fillStyle = '#0f0'; 20 ctx.fillRect(0, 0, 100, 50); 21 const response = await fetch('/images/red.png'); 22 const blob = await response.blob(); 23 const bitmap = await createImageBitmap(blob); 24 ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50); 25 ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50); 26 ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50); 27 _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2); 28 29 }, "drawImage with zero-sized source rectangle draws nothing without exception"); 30 </script>