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// META: script=/resources/test-only-api.js
// META: script=/serial/resources/common.js
// META: script=resources/automation.js
serial_test(async (t, fake) => {
// Don't listen for 'disconnect' events on navigator.serial so we can listen
// for them on each SerialPort instance instead.
const eventWatcher = new EventWatcher(t, navigator.serial, ['connect']);
// Wait for getPorts() to resolve in order to ensure that the Mojo client
// interface has been configured.
let ports = await navigator.serial.getPorts();
assert_equals(ports.length, 0);
// Add ports one at a time so that we can map tokens to ports.
const token1 = fake.addPort();
const port1 = (await eventWatcher.wait_for(['connect'])).target;
const port1Watcher = new EventWatcher(t, port1, ['disconnect']);
const token2 = fake.addPort();
const port2 = (await eventWatcher.wait_for(['connect'])).target;
const port2Watcher = new EventWatcher(t, port2, ['disconnect']);
fake.removePort(token2);
const event1 = await port2Watcher.wait_for(['disconnect']);
assert_true(event1 instanceof Event);
assert_equals(event1.target, port2);
ports = await navigator.serial.getPorts();
assert_equals(ports.length, 1);
assert_equals(ports[0], port1);
fake.removePort(token1);
const event2 = await port1Watcher.wait_for(['disconnect']);
assert_true(event2 instanceof Event);
assert_equals(event2.target, port1);
ports = await navigator.serial.getPorts();
assert_equals(ports.length, 0);
}, 'A "disconnect" event is fired on ports when they are removed.');
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