IndexedDB/sharedarraybuffer-key.https.html

<!DOCTYPE html>
<title>IndexedDB: SharedArrayBuffer keys</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/support.js"></script>
<script>
'use strict';

const key_data = [1, 2, 3, 4];

function create_object_store(t, db) {
  db.createObjectStore('store');
}

function create_shared_buffer() {
  const buffer = new SharedArrayBuffer(key_data.length);
  const view = new Uint8Array(buffer);
  view.set(key_data);
  return {buffer, view};
}

function put_and_validate_key(t, db, key, view_on_sab, key_copy) {
  assert_true(
      self.crossOriginIsolated, 'The page should be cross-origin isolated');

  // Put the SAB-backed key in the store.
  const tx = db.transaction('store', 'readwrite');
  const store = tx.objectStore('store');
  const put_request = store.put('value', key);
  put_request.onerror = t.unreached_func('put should succeed');

  // Modifying the SAB after put should have no effect.
  view_on_sab.fill(0);

  // Reading the record back out of the key should work.
  const get_request = store.get(key_copy);
  get_request.onerror = t.unreached_func('get should succeed');
  get_request.onsuccess = t.step_func(() => {
    assert_equals(get_request.result, 'value');
  });

  tx.oncomplete = t.step_func_done();
}

indexeddb_test(
    create_object_store,
    (t, db) => {
      const {buffer, view} = create_shared_buffer();
      put_and_validate_key(
          t, db, buffer, view, new Uint8Array(key_data));
    },
    'A SharedArrayBuffer can be used as an IndexedDB key');

indexeddb_test(
    create_object_store,
    (t, db) => {
      const {view} = create_shared_buffer();
      put_and_validate_key(
          t, db, view, view, new Uint8Array(key_data));
    },
    'A SharedArrayBuffer-backed view can be used as an IndexedDB key');

indexeddb_test(
    create_object_store,
    (t, db) => {
      const {buffer, view} = create_shared_buffer();
      put_and_validate_key(
          t, db, [buffer], view, [new Uint8Array(key_data)]);
    },
    'A SharedArrayBuffer in an array can be used as an IndexedDB key');
</script>