| <!DOCTYPE html> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <script src="../../../resources/bluetooth/bluetooth-helpers.js"></script> |
| <script> |
| 'use strict'; |
| promise_test(() => { |
| return setBluetoothFakeAdapter('HeartRateAdapter') |
| .then(() => requestDeviceWithKeyDown({ |
| filters: [{services: ['heart_rate']}]})) |
| .then(device => device.gatt.connect()) |
| .then(gattServer => gattServer.getPrimaryService('heart_rate')) |
| .then(service => service.getCharacteristic('heart_rate_measurement')) |
| .then(characteristic => { |
| return characteristic.startNotifications() |
| .then(() => new Promise(resolve => { |
| let event_listener = () => { |
| characteristic.removeEventListener( |
| 'characteristicvaluechanged', event_listener); |
| resolve(); |
| }; |
| characteristic.addEventListener( |
| 'characteristicvaluechanged', event_listener); |
| })); |
| }); |
| }, 'Registering after the promise resolves shouldn\'t result in events ' + |
| 'getting dropped.'); |
| </script> |
