adapter-absent-getAvailability.https.window.js

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This WPT test may be referenced by the following Test IDs:
- /bluetooth/adapter/adapter-absent-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 false if the system does ' +

    'not have an adapter.';

bluetooth_test(async () => {

  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.');

}, test_desc);