| <!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 worklet1 = await sharedStorage.createWorklet('resources/simple-module.js'); |
| let worklet2 = await sharedStorage.createWorklet('resources/simple-module.js'); |
| |
| const ancestor_key1 = token(); |
| let url1_0 = generateURL("/shared-storage/resources/frame0.html", |
| [ancestor_key1]); |
| let url1_1 = generateURL("/shared-storage/resources/frame1.html", |
| [ancestor_key1]); |
| |
| const ancestor_key2 = token(); |
| let url2_0 = generateURL("/shared-storage/resources/frame0.html", |
| [ancestor_key2]); |
| let url2_1 = generateURL("/shared-storage/resources/frame1.html", |
| [ancestor_key2]); |
| |
| // Two `selectURL()`s run in parallel. Each performs the following steps: |
| // 1. Acquires the lock. |
| // 2. Reads the current value of the given key. |
| // 3. Waits for 100ms. |
| // 4. Increments the value. |
| // 5. Releases the lock. |
| // |
| // Expected behavior: After both operations finish, the value of the given key |
| // should be 2. |
| // |
| // This demonstrates that the lock is effective, preventing the |
| // "get and increment" operations from interleaving. If the lock were not |
| // used, both worklets would likely read 0 and set the value to 1. |
| |
| let select_url_result1 = await worklet1.selectURL( |
| "get-wait-increment-within-lock", [{url: url1_0}, {url: url1_1}], |
| {data: {'key': 'key'}, resolveToConfig: true}); |
| |
| let select_url_result2 = await worklet2.selectURL( |
| "get-wait-increment-within-lock", [{url: url2_0}, {url: url2_1}], |
| {data: {'key': 'key'}, resolveToConfig: true}); |
| |
| attachFencedFrame(select_url_result1, 'opaque-ads'); |
| const result1 = await nextValueFromServer(ancestor_key1); |
| assert_equals(result1, "frame1_loaded"); |
| |
| attachFencedFrame(select_url_result2, 'opaque-ads'); |
| const result2 = await nextValueFromServer(ancestor_key2); |
| assert_equals(result2, "frame1_loaded"); |
| |
| await verifyKeyValueForOrigin('key', '2', location.origin); |
| |
| await deleteKeyForOrigin('key', location.origin); |
| }, 'Basic test for Web Locks API in the shared storage worklet'); |
| |
| </script> |
| </body> |
