| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <style> |
| #target { |
| --unregistered-a: 100; |
| } |
| </style> |
| <div id="target"></div> |
| <script> |
| setup(() => { |
| CSS.registerProperty({ |
| name: '--test', |
| syntax: '<number>', |
| initialValue: '0', |
| inherits: false, |
| }); |
| }); |
| |
| test(() => { |
| let animation = target.animate({'--test': ['var(--unregistered-a)', 'var(--unregistered-b)']}, 100); |
| // Because this property is unregistered it will not interpolate smoothly, instead it will flip at 50%. |
| let unregisteredAnimation = target.animate({'--unregistered-b': ['200', '300']}, 100); |
| |
| unregisteredAnimation.currentTime = 25; |
| { |
| animation.currentTime = 25; |
| assert_equals(getComputedStyle(target).getPropertyValue('--test'), '125', 'target at 25%, to at 25%'); |
| |
| animation.currentTime = 75; |
| assert_equals(getComputedStyle(target).getPropertyValue('--test'), '175', 'target at 75%, to at 25%'); |
| } |
| |
| unregisteredAnimation.currentTime = 75; |
| { |
| animation.currentTime = 25; |
| assert_equals(getComputedStyle(target).getPropertyValue('--test'), '150', 'target at 25%, to at 75%'); |
| |
| animation.currentTime = 75; |
| assert_equals(getComputedStyle(target).getPropertyValue('--test'), '250', 'target at 75%, to at 75%'); |
| } |
| }, 'Animated registered custom properties can var() reference animated unregistered custom properties across separate Animations.'); |
| </script> |
