| <!DOCTYPE html> |
| <title>Same-origin prerendering can access localStorage</title> |
| <meta name="timeout" content="long"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/utils.js"></script> |
| <body> |
| <script> |
| |
| setup(() => assertSpeculationRulesIsSupported()); |
| |
| promise_test(async t => { |
| const bc = new BroadcastChannel('prerender-channel'); |
| |
| const gotMessage = new Promise(resolve => { |
| bc.addEventListener('message', e => { |
| resolve(e.data); |
| }, {once:true}); |
| }); |
| |
| const initialValue = "initial_set"; |
| window.localStorage.setItem('initial', initialValue); |
| |
| // Start prerendering a page that attempts to access localStorage API. |
| startPrerendering(`resources/local-storage-access.html`); |
| const result = await gotMessage; |
| assert_equals( |
| result, initialValue, |
| 'prerendering page should be able to read from local storage'); |
| assert_equals( |
| window.localStorage.getItem('prerender'), 'prerender_set', |
| 'prerendering page should be able to write to local storage'); |
| }, 'prerendering page should be able to access local storage'); |
| |
| </script> |
| </body> |
