<!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';
bluetooth_test(() => {
  let typed_array = Uint8Array.of(1, 2);
  let array_buffer = Uint8Array.of(3, 4).buffer;
  let data_view = new DataView(new ArrayBuffer(2));
  data_view.setUint8(0, 5);
  data_view.setUint8(1, 6);

  let characteristic;
  let fake_characteristic;
  return getMeasurementIntervalCharacteristic()
    .then(result => ({characteristic, fake_characteristic} = result))
    .then(() => fake_characteristic.getLastWrittenValue())
    .then(last_value => assert_true(last_value === null))

    .then(() => fake_characteristic.setNextWriteResponse(GATT_SUCCESS))
    .then(() => characteristic.writeValue(typed_array))
    .then(() => fake_characteristic.getLastWrittenValue())
    .then(last_value => assert_array_equals(last_value, [1, 2]))

    .then(() => fake_characteristic.setNextWriteResponse(GATT_SUCCESS))
    .then(() => characteristic.writeValue(array_buffer))
    .then(() => fake_characteristic.getLastWrittenValue())
    .then(last_value => assert_array_equals(last_value, [3, 4]))

    .then(() => fake_characteristic.setNextWriteResponse(GATT_SUCCESS))
    .then(() => characteristic.writeValue(data_view))
    .then(() => fake_characteristic.getLastWrittenValue())
    .then(last_value => assert_array_equals(last_value, [5, 6]));
}, 'A regular write request to a writable characteristic should succeed.');
</script>