2d.drawImage.zerosource.image.html (1354B)
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.image</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.image</h1> 10 <p class="desc">drawImage with zero-sized source rectangle from image 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 22 function loadImage(src) { 23 return new Promise((resolve, reject) => { 24 const img = new Image(); 25 img.onload = () => resolve(img); 26 img.onerror = (err) => reject(err); 27 img.src = src; 28 }); 29 } 30 const img1 = await loadImage('/images/red-zerowidth.svg'); 31 const img2 = await loadImage('/images/red-zeroheight.svg'); 32 const img3 = await loadImage('/images/red-zerosize.svg'); 33 34 ctx.drawImage(img1, 0, 0, 100, 50); 35 ctx.drawImage(img2, 0, 0, 100, 50); 36 ctx.drawImage(img3, 0, 0, 100, 50); 37 _assertPixel(canvas, 50, 25, 0, 255, 0, 255); 38 39 }, "drawImage with zero-sized source rectangle from image draws nothing without exception"); 40 </script>