| <!doctype html> |
| <meta charset=utf-8> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| function attachAndWaitForLoad(element) { |
| return new Promise((resolve, reject) => { |
| element.onload = resolve; |
| element.onerror = reject; |
| document.body.appendChild(element); |
| }); |
| } |
| |
| promise_test(function(t) { |
| const link = document.createElement('link'); |
| link.rel = 'modulepreload'; |
| link.as = 'json'; |
| link.href = 'resources/dummy.json'; |
| return attachAndWaitForLoad(link).then(() => { |
| const absoluteURL = new URL(link.href, location.href).href; |
| assert_equals(performance.getEntriesByName(absoluteURL).length, 1, absoluteURL); |
| }); |
| }, 'link rel=modulepreload with as=json should preload JSON module'); |
| </script> |
