| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="utils.js"></script> |
| <script src="deferred-promise-utils.js"></script> |
| <script> |
| |
| const params = new URLSearchParams(location.search); |
| |
| // The main test page (restriction-broadcast-channel.html) loads the initiator |
| // page, then the initiator page will prerender itself with the `prerendering` |
| // parameter. |
| const isPrerendering = params.has('prerendering'); |
| |
| if (!isPrerendering) { |
| loadInitiatorPage(); |
| } else { |
| const prerenderEventCollector = new PrerenderEventCollector(); |
| |
| // Create separate channels as a sender channel cannot receive a message sent |
| // by itself. |
| const sender = new BroadcastChannel('test'); |
| const receiver = new BroadcastChannel('test'); |
| |
| const promise = new Promise(resolve => { |
| receiver.onmessage = e => { |
| prerenderEventCollector.addEvent(`received message: ${e.data}`); |
| resolve(); |
| }; |
| }); |
| sender.postMessage('hello'); |
| |
| prerenderEventCollector.start(promise, 'BroadcastChannel'); |
| } |
| </script> |
