| <!doctype html> |
| <meta charset="utf-8"> |
| <link rel="help" href="https://drafts.csswg.org/css-transitions/#starting"> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1816672"> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <link rel="author" title="Mozilla" href="https://mozilla.org"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <iframe></iframe> |
| <script> |
| let t = async_test("Transitions don't incorrectly start on dynamic document element insertion"); |
| window.onload = t.step_func_done(function() { |
| let frame = document.querySelector("iframe"); |
| let doc = frame.contentDocument; |
| doc.open(); |
| doc.write("<!doctype html>"); |
| let root = doc.createElement("html"); |
| root.innerHTML = ` |
| <style> |
| div { |
| width: 100px; |
| height: 100px; |
| background-color: blue; |
| transition: margin-left 10s ease; |
| margin-left: 100px; |
| } |
| </style> |
| <div></div> |
| `; |
| doc.appendChild(root); |
| doc.close(); |
| assert_equals(frame.contentWindow.getComputedStyle(doc.querySelector("div")).marginLeft, "100px", "Transition shouldn't have started"); |
| }); |
| </script> |
