| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <style> |
| #target { |
| --from: 100; |
| --to: 200; |
| } |
| </style> |
| <div id="target"></div> |
| <script> |
| setup(() => { |
| for (let name of ['--test', '--from', '--to']) { |
| CSS.registerProperty({ |
| name, |
| syntax: '<number>', |
| initialValue: '0', |
| inherits: false, |
| }); |
| } |
| }); |
| |
| test(() => { |
| let animation = target.animate({'--test': ['var(--from)', 'var(--to)']}, 100); |
| |
| animation.currentTime = 25; |
| assert_equals(getComputedStyle(target).getPropertyValue('--test'), '125', 'target at 25%'); |
| |
| animation.currentTime = 75; |
| assert_equals(getComputedStyle(target).getPropertyValue('--test'), '175', 'target at 75%'); |
| }, 'Animated registered custom properties can var() reference other registered custom properties.'); |
| </script> |
