| // META: title=StorageManager: estimate() |
| |
| test(function(t) { |
| assert_true(navigator.storage.estimate() instanceof Promise); |
| }, 'estimate() method returns a Promise'); |
| |
| promise_test(function(t) { |
| return navigator.storage.estimate().then(function(result) { |
| assert_true(typeof result === 'object'); |
| assert_true('usage' in result); |
| assert_equals(typeof result.usage, 'number'); |
| assert_true('quota' in result); |
| assert_equals(typeof result.quota, 'number'); |
| }); |
| }, 'estimate() resolves to dictionary with members'); |
| |
| promise_test(function(t) { |
| const large_value = new Uint8Array(1e6); |
| const dbname = `db-${location}-${t.name}`; |
| let db, before, after; |
| |
| indexedDB.deleteDatabase(dbname); |
| return new Promise((resolve, reject) => { |
| const open = indexedDB.open(dbname); |
| open.onerror = () => { reject(open.error); }; |
| open.onupgradeneeded = () => { |
| const connection = open.result; |
| connection.createObjectStore('store'); |
| }; |
| open.onsuccess = () => { |
| const connection = open.result; |
| t.add_cleanup(() => { |
| connection.close(); |
| indexedDB.deleteDatabase(dbname); |
| }); |
| resolve(connection); |
| }; |
| }) |
| .then(connection => { |
| db = connection; |
| return navigator.storage.estimate(); |
| }) |
| .then(estimate => { |
| before = estimate.usage; |
| return new Promise((resolve, reject) => { |
| const tx = db.transaction('store', 'readwrite'); |
| tx.objectStore('store').put(large_value, 'key'); |
| tx.onabort = () => { reject(tx.error); }; |
| tx.oncomplete = () => { resolve(); }; |
| }); |
| }) |
| .then(() => { |
| return navigator.storage.estimate(); |
| }) |
| .then(estimate => { |
| after = estimate.usage; |
| assert_greater_than(after, before, |
| 'estimated usage should increase'); |
| }); |
| }, 'estimate() shows usage increase after 1MB IndexedDB record is stored'); |