adapter-added-getAvailability.https.window.js

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This WPT test may be referenced by the following Test IDs:
- /bluetooth/adapter/adapter-added-getAvailability.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 = 'getAvailability() resolves with true after adapter is ' +

    'inserted into a system with a platform that supports Bluetooth LE.';

bluetooth_test(async () => {

  const fake_central =

      await navigator.bluetooth.test.simulateCentral({state: 'absent'});

  let availability = await navigator.bluetooth.getAvailability();

  assert_false(

      availability,

      'getAvailability() resolves promise with false when adapter is absent.');

  await fake_central.setState('powered-on');

  availability = await navigator.bluetooth.getAvailability();

  assert_true(

      availability,

      'getAvailability() resolves promise with true after Bluetooth LE ' +

          'capable adapter has been has been added.');

}, test_desc);