estimate-indexeddb.https.any.js

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /storage/estimate-indexeddb.https.any.html - WPT Dashboard Interop Dashboard
- /storage/estimate-indexeddb.https.any.worker.html - WPT Dashboard Interop Dashboard

// META: title=StorageManager: estimate() for indexeddb

// META: script=/storage/buckets/resources/util.js

// Technically, this verifies unspecced behavior. See

// https://github.com/whatwg/storage/issues/110 for defining this behavior.

promise_test(async t => {

  const arraySize = 1e6;

  const objectStoreName = "storageManager";

  const dbname =

      this.window ? window.location.pathname : 'estimate-worker.https.html';

  await indexedDbDeleteRequest(indexedDB, dbname);

  let estimate = await navigator.storage.estimate();

  const usageBeforeCreate = estimate.usage;

  const db =

      await indexedDbOpenRequest(t, indexedDB, dbname, (db_to_upgrade) => {

        db_to_upgrade.createObjectStore(objectStoreName);

});

  estimate = await navigator.storage.estimate();

  const usageAfterCreate = estimate.usage;

  assert_greater_than(

    usageAfterCreate, usageBeforeCreate,

    'estimated usage should increase after object store is created');

  const txn = db.transaction(objectStoreName, 'readwrite');

  const buffer = new ArrayBuffer(arraySize);

  const view = new Uint8Array(buffer);

  for (let i = 0; i < arraySize; i++) {

    view[i] = Math.floor(Math.random() * 255);

  const testBlob = new Blob([buffer], {type: 'binary/random'});

  txn.objectStore(objectStoreName).add(testBlob, 1);

  await transactionPromise(txn);

  estimate = await navigator.storage.estimate();

  const usageAfterPut = estimate.usage;

  assert_greater_than(

    usageAfterPut, usageAfterCreate,

    'estimated usage should increase after large value is stored');

  db.close();

}, 'estimate() shows usage increase after large value is stored');