one-event-per-disconnection.https.window.js

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This WPT test may be referenced by the following Test IDs:
- /bluetooth/device/gattserverdisconnected-event/one-event-per-disconnection.https.window.html - WPT Dashboard Interop Dashboard

// META: script=/resources/testdriver.js

// META: script=/resources/testdriver-vendor.js

// META: script=/bluetooth/resources/bluetooth-test.js

// META: script=/bluetooth/resources/bluetooth-fake-devices.js

'use strict';

const test_desc = 'If a site disconnects from a device while the platform is ' +

    'disconnecting that device, only one gattserverdisconnected event should ' +

    'fire.';

bluetooth_test(async () => {

  const {device, fake_peripheral} = await getConnectedHealthThermometerDevice();

  let num_events = 0;

  // 1. Listen for disconnections.

  device.addEventListener('gattserverdisconnected', () => num_events++);

  // 2. Disconnect several times.

  await Promise.all([

    eventPromise(device, 'gattserverdisconnected'),

    fake_peripheral.simulateGATTDisconnection(),

    device.gatt.disconnect(),

    device.gatt.disconnect(),

]);

  // 3. Wait to catch disconnect events.

  await new Promise(resolve => step_timeout(resolve, 50));

  // 4. Ensure there is exactly 1 disconnection recorded.

  assert_equals(num_events, 1);

}, test_desc);