| <!doctype html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/utils.js"></script> |
| <script src="/shared-storage/resources/util.js"></script> |
| <script src="/fenced-frame/resources/utils.js"></script> |
| |
| <body> |
| <script> |
| 'use strict'; |
| |
| promise_test(async t => { |
| let worklet = await sharedStorage.createWorklet('resources/simple-module.js'); |
| |
| const ancestor_key = token(); |
| let url0 = generateURL("/shared-storage/resources/frame0.html", |
| [ancestor_key]); |
| let url1 = generateURL("/shared-storage/resources/frame1.html", |
| [ancestor_key]); |
| |
| // Invoke `selectURL()` to perform the following steps: |
| // 1. Acquires the lock. |
| // 2. Reads the current value at the given key. |
| // 3. Waits for 500ms. |
| // 4. Sets the shared storage value to the read value appended with the given letter. |
| // 5. Releases the lock. |
| // |
| // After 100ms, invoke `sharedStorage.append()` with the same lock and the |
| // same letter to append. |
| // |
| // Expected behavior: After both of them finish, the value at the given key |
| // should contain the letter repeated twice. |
| // |
| // This demonstrates that the `withLock` option is effective, preventing the |
| // `append()` method interfering with the "get and set" operation. If the lock |
| // were not used, the final value would likely be a single letter. |
| // |
| // Note: This test remains valid even if the `append()` call happens outside |
| // the critical section protected by the lock within the worklet. The test |
| // effectively demonstrates mutual exclusion as long as there's a reasonable |
| // chance for `append()` to occur while the worklet is still running. |
| let select_url_result = await worklet.selectURL( |
| "get-wait-set-within-lock", |
| [{url: url0}, {url: url1}], |
| {data: {'key': 'key', |
| 'lock_name': 'lock1', |
| 'append_letter': 'a'}, |
| resolveToConfig: true}); |
| |
| // Busy wait for 100ms. |
| const startWaitTime = Date.now(); |
| while (Date.now() - startWaitTime < 100) {} |
| |
| sharedStorage.append('key', 'a', {withLock: 'lock1'}); |
| |
| attachFencedFrame(select_url_result, 'opaque-ads'); |
| const result = await nextValueFromServer(ancestor_key); |
| assert_equals(result, "frame1_loaded"); |
| |
| await verifyKeyValueForOrigin('key', 'aa', location.origin); |
| |
| await deleteKeyForOrigin('key', location.origin); |
| }, 'Test for withLock option in a Window context'); |
| |
| </script> |
| </body> |
