| <!DOCTYPE html> |
| <title>HTML Test: The style load event should fire when textContent is changed</title> |
| <link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/semantics.html#update-a-style-block"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style id=target onload="load()"> |
| .box { color:red; } |
| </style> |
| <div class='box'></div> |
| <div id="log"></div> |
| |
| <script> |
| var loadCount = 0; |
| function load() { loadCount++; } |
| |
| function styleLoad() { |
| return new Promise((resolve) => { |
| document.getElementById('target').addEventListener('load', () => { |
| resolve(); |
| }); |
| }); |
| } |
| |
| promise_test(async t => { |
| await styleLoad(); |
| assert_equals(loadCount,1,"Style element should have loaded once by now"); |
| target.textContent = `.box { color: green; }`; |
| await styleLoad(); |
| assert_equals(loadCount,2,"Style element should fire the load event when textContent changes"); |
| },"style load event should fire when textContent changed"); |
| </script> |
