| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSSOM: CSSStyleDeclaration.removeProperty doesn't queue a mutation record when not actually removed, invoked from setPropertyValue</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#dom-cssstyledeclaration-setpropertyvalue"> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script> |
| let test = async_test("CSSStyleDeclaration.removeProperty doesn't queue a mutation record when not actually removed, invoked from setPropertyValue"); |
| document.documentElement.style.top = "0"; |
| let m = new MutationObserver(test.unreached_func("shouldn't queue a mutation record")); |
| m.observe(document.documentElement, { attributes: true }); |
| |
| document.documentElement.style.width = ""; |
| requestAnimationFrame(() => test.done()); |
| </script> |
