chromium/third_party/blink/web_tests/wpt_internal/bluetooth/requestDevice/chooser/restart-scan-includes-previous-device.https.html

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/bluetooth/resources/bluetooth-test.js"></script>
<script src="/bluetooth/resources/bluetooth-fake-devices.js"></script>
<script>
'use strict';
bluetooth_test(() => {
  setBluetoothManualChooser(true);

  // Open the chooser, looking for a Heart Rate device.
  let requestDevicePromise = setBluetoothFakeAdapter('DeviceEventAdapter')
                                 .then(() => requestDeviceWithTrustedClick({
                                         filters: [{services: ['heart_rate']}]
                                       }));

  // The connected Heart Rate Device is added to the chooser.
  return getBluetoothManualChooserEvents(4)
      .then(events => {
        assert_equals(events.length, 4, events);
        assert_equals(events[0], 'chooser-opened(https://web-platform.test:8444)');
        let idsByName = new AddDeviceEventSet();
        idsByName.assert_add_device_event(events[1]);
        assert_true(idsByName.has('Connected Heart Rate Device'));
        assert_equals(events[2], 'discovering');
        assert_equals(events[3], 'discovery-idle');

        // After restarting a scan the connected device should be added to the
        // chooser.
        sendBluetoothManualChooserEvent('rescan', '');
        return getBluetoothManualChooserEvents(3);
      })
      .then(events => {
        let idsByName = new AddDeviceEventSet();
        assert_equals(events.length, 3, events);
        idsByName.assert_add_device_event(events[0]);
        assert_true(idsByName.has('Connected Heart Rate Device'));
        assert_equals(events[1], 'discovering', events[1]);
        assert_equals(events[2], 'discovery-idle');

        // Select it and let the test complete.
        sendBluetoothManualChooserEvent(
            'selected', idsByName.get('Connected Heart Rate Device'));
        return requestDevicePromise;
      })
      .then(
          device => assert_equals(device.name, 'Connected Heart Rate Device'));
}, 'The chooser shows previously connected devices.');
</script>