| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| // Waits for 2 messages from portal, one before activation and one after. |
| function waitForMessages() { |
| return new Promise((resolve, reject) => { |
| var results = []; |
| var bc = new BroadcastChannel("portals-host-hidden-after-activation"); |
| bc.onmessage = e => { |
| results.push(e.data.hasHost); |
| if (results.length == 2) { |
| bc.close(); |
| resolve(results); |
| } |
| }; |
| }); |
| } |
| |
| promise_test(async () => { |
| assert_implements("HTMLPortalElement" in self); |
| const portalUrl = encodeURIComponent("portal-host-hidden-after-activation-portal.html"); |
| window.open(`resources/portal-embed-and-activate.html?url=${portalUrl}`); |
| var results = await waitForMessages(); |
| assert_true(results[0], "portalHost exposed before calling activate()"); |
| assert_false(results[1], "portalHost hidden after receiving portalactivate event"); |
| }, "window.portalHost should be null after portal is activated"); |
| </script> |
| </body> |
