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Test Info: Warnings

// META: title=Close event test when an entangled port is explicitly closed.
// META: script=/common/dispatcher/dispatcher.js
// META: script=/common/get-host-info.sub.js
// META: script=/common/utils.js
// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
// META: script=resources/helper.js
async_test(t => {
const channel = new MessageChannel();
channel.port1.start();
channel.port2.start();
channel.port2.onclose = t.step_func_done();
channel.port1.close();
}, 'Close event on port2 is fired when port1 is explicitly closed');
async_test(t => {
const channel = new MessageChannel();
channel.port1.start();
channel.port2.start();
channel.port1.onclose =
t.unreached_func('Should not fire a close event on port1');
channel.port1.close();
t.step_timeout(t.step_func_done(), 1000);
}, 'Close event on port1 is not fired when port1 is explicitly closed');
promise_test(async t => {
const rc = await addWindow();
const waitForPort = expectMessagePortFromWindow(window);
await createMessageChannelAndSendPort(rc);
const closeEventPromise = createCloseEventPromise(await waitForPort);
rc.executeScript(() => {
window.closePort();
});
await closeEventPromise;
}, 'Close event on port2 is fired when port1, which is in a different window, is explicitly closed.')