| <!DOCTYPE html> |
| <title>Node.moveBefore should preserve CSS transition state (transform)</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <body> |
| <section id="old-parent"> |
| <div id="item"></div> |
| </section> |
| <section id="new-parent"> |
| </section> |
| <style> |
| #item { |
| width: 100px; |
| height: 100px; |
| background: green; |
| transition: transform 60s steps(1, jump-both); |
| } |
| |
| body { |
| margin-left: 0; |
| } |
| </style> |
| <script> |
| promise_test(async t => { |
| const item = document.querySelector("#item"); |
| assert_equals(item.getBoundingClientRect().x, 0); |
| item.style.transform = "translateX(400px)"; |
| await new Promise(resolve => item.addEventListener("transitionstart", resolve)); |
| document.querySelector("#new-parent").moveBefore(item, null); |
| await new Promise(resolve => requestAnimationFrame(() => resolve())); |
| assert_equals(item.getBoundingClientRect().x, 200); |
| assert_equals(item.getAnimations().length, 1); |
| }); |
| </script> |
| </body> |
