| <!DOCTYPE HTML> |
| <html> |
| <title>WebStorage Test: StorageEvent - only if something changes</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| const iframe = document.createElement('iframe'); |
| |
| function tests(storageName) { |
| test(t => assert_true(storageName in window), storageName + ' exists'); |
| |
| const storage = window[storageName]; |
| const iframeStorage = iframe.contentWindow[storageName]; |
| |
| add_completion_callback(() => { |
| storage.clear(); |
| }); |
| |
| promise_test(t => { |
| const w = new EventWatcher(t, iframe.contentWindow, 'storage'); |
| |
| // Random key to make sure we don't conflict with any cruft leftover from |
| // earlier runs. Any synchronization would be really hard with localStorage |
| // limited guarantees. |
| const testKey = Math.random().toString(36).slice(2); |
| |
| storage.setItem(testKey, 'foo'); |
| storage.setItem(testKey, 'foo'); |
| storage.setItem(testKey, 'bar'); |
| return w.wait_for('storage') |
| .then(e => { |
| assert_equals(e.storageArea, iframeStorage); |
| assert_equals(e.key, testKey); |
| assert_equals(e.newValue, 'foo'); |
| return w.wait_for('storage'); |
| }) |
| .then(e => { |
| assert_equals(e.storageArea, iframeStorage); |
| assert_equals(e.key, testKey); |
| assert_equals(e.oldValue, 'foo'); |
| assert_equals(e.newValue, 'bar'); |
| }); |
| }, 'Setting to same value does not trigger event for ' + storageName); |
| |
| promise_test(t => { |
| const w = new EventWatcher(t, iframe.contentWindow, 'storage'); |
| |
| // Random key to make sure we don't conflict with any cruft leftover from |
| // earlier runs. Any synchronization would be really hard with localStorage |
| // limited guarantees. |
| const testKey1 = Math.random().toString(36).slice(2); |
| const testKey2 = Math.random().toString(36).slice(2); |
| |
| storage.removeItem(testKey1); |
| storage.setItem(testKey2, 'foo'); |
| return w.wait_for('storage') |
| .then(e => { |
| assert_equals(e.storageArea, iframeStorage); |
| assert_equals(e.key, testKey2); |
| assert_equals(e.newValue, 'foo'); |
| }); |
| }, 'Deleting non-existent key does not trigger event for ' + storageName); |
| |
| |
| promise_test(t => { |
| const w = new EventWatcher(t, iframe.contentWindow, 'storage'); |
| |
| // Random key to make sure we don't conflict with any cruft leftover from |
| // earlier runs. Any synchronization would be really hard with localStorage |
| // limited guarantees. |
| const testKey = Math.random().toString(36).slice(2); |
| |
| storage.setItem(testKey, 'foo'); |
| storage.clear(); |
| storage.clear(); |
| storage.setItem(testKey, 'bar'); |
| return w.wait_for('storage') |
| .then(e => { |
| assert_equals(e.storageArea, iframeStorage); |
| assert_equals(e.key, testKey); |
| assert_equals(e.newValue, 'foo'); |
| return w.wait_for('storage'); |
| }) |
| .then(e => { |
| assert_equals(e.storageArea, iframeStorage); |
| assert_equals(e.key, null); |
| assert_equals(e.oldValue, null); |
| assert_equals(e.newValue, null); |
| return w.wait_for('storage'); |
| }) |
| .then(e => { |
| assert_equals(e.storageArea, iframeStorage); |
| assert_equals(e.key, testKey); |
| assert_equals(e.oldValue, null); |
| assert_equals(e.newValue, 'bar'); |
| }); |
| }, 'Clearing empty storage does not trigger event for ' + storageName); |
| |
| } |
| |
| iframe.src = "resources/event_basic.html"; |
| iframe.onload = () => { |
| tests('sessionStorage'); |
| tests('localStorage'); |
| }; |
| document.body.appendChild(iframe); |
| </script> |
| </body> |
| </html> |
| |