| <!DOCTYPE html> |
| <html class=reftest-wait> |
| <title>View transitions: :only-child style queries without transition shouldn't crash</title> |
| <link rel="help" href="https://github.com/WICG/view-transitions"> |
| <link rel="author" href="mailto:khushalsagar@chromium.org"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| ::view-transition:only-child, |
| ::view-transition-group(*):only-child, |
| ::view-transition-image-pair(*):only-child, |
| ::view-transition-old(*):only-child, |
| ::view-transition-new(*):only-child { |
| background-color: blue; |
| } |
| </style> |
| |
| <script> |
| promise_test(() => { |
| return new Promise(async (resolve, reject) => { |
| let elements = [ |
| "view-transition", |
| "view-transition-group(foo)", |
| "view-transition-image-pair(foo)", |
| "view-transition-old(foo)", |
| "view-transition-old(foo)" |
| ]; |
| |
| for (let i = 0; i < elements.length; i++) { |
| let style = window.getComputedStyle(document.documentElement, elements[i]); |
| if (style.backgroundColor == "rgb(0, 0, 255") |
| reject(); |
| } |
| resolve(); |
| }); |
| }, ":only-child style queries without transition shouldn't crash"); |
| </script> |
