write-updates-value.https.html | Explore in Territory

<!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';
const test_desc = 'A regular write request to a writable characteristic ' +
    'should update value.';
const newValue = new TextEncoder().encode('foo');

bluetooth_test(async () => {
  const {characteristic, fake_characteristic} =
      await getMeasurementIntervalCharacteristic();
  assert_equals(characteristic.value, null);
  await characteristic.writeValueWithoutResponse(newValue);
  assert_array_equals(
      new Uint8Array(characteristic.value.buffer), newValue);
  const {lastValue, lastWriteType} =
      await fake_characteristic.getLastWrittenValue();
  assert_array_equals(lastValue, newValue);
  assert_equals(lastWriteType, 'without-response');
}, test_desc);
</script>

chromium/third_party/blink/web_tests/wpt_internal/bluetooth/characteristic/writeValueWithoutResponse/write-updates-value.https.html