| <!DOCTYPE html> |
| <meta charset="UTF-8"> |
| <title>transform interpolation</title> |
| <link rel="help" href="https://drafts.csswg.org/css-transforms-1/#matrix-interpolation"> |
| <meta name="assert" content="transform does not transition between non-invertible and invertible matrices"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/css-transitions/support/helper.js"></script> |
| |
| <style> |
| |
| #target { |
| transition: transform 1s; |
| } |
| |
| </style> |
| <div id="target"></div> |
| <script> |
| promise_test(async t => { |
| await waitForAnimationFrames(1); |
| const target = document.getElementById("target"); |
| getComputedStyle(target).transform; // ensure there's a before-change style |
| target.style.transform = "matrix3d(2,0,0,0, 0,2,0,0, 0,0,0,0, 0,0,0,1)"; |
| assert_equals(document.getAnimations().length, 0, "No transitions"); |
| }, "Setting 'transform' to a non-invertible matrix does not yield a CSS Transition"); |
| </script> |
