| <!doctype html> |
| <title>CSS shorthand filters never taint the canvas</title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| function assert_not_tainted(performCommands, description) { |
| let ctx = document.createElement('canvas').getContext('2d'); |
| performCommands(ctx); |
| assert_not_equals(ctx.getImageData(0, 0, 1, 1), null, description); |
| } |
| |
| test(function() { |
| assert_not_tainted(ctx => { |
| ctx.fillStyle = '#0f0'; |
| ctx.filter = 'brightness(0.5)'; |
| ctx.fillRect(5, 5, 10, 10); |
| }, 'brightness(0.5)'); |
| |
| assert_not_tainted(ctx => { |
| ctx.filter = 'blur(5px)'; |
| ctx.fillRect(5, 5, 10, 10); |
| }, 'blur(5px)'); |
| |
| assert_not_tainted(ctx => { |
| ctx.filter = 'hue-rotate(45deg) drop-shadow(16px 16px 20px blue)'; |
| ctx.fillRect(5, 5, 10, 10); |
| }, 'hue-rotate(45deg) drop-shadow(16px 16px 20px blue)'); |
| }); |
| </script> |
