зеркало из https://github.com/mozilla/gecko-dev.git
69 строки
2.4 KiB
HTML
69 строки
2.4 KiB
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<title>StorageManager: estimate()</title>
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<meta name="help" href="https://storage.spec.whatwg.org/#dom-storagemanager-estimate">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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test(function(t) {
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assert_true(navigator.storage.estimate() instanceof Promise);
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}, 'estimate() method returns a Promise');
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promise_test(function(t) {
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return navigator.storage.estimate().then(function(result) {
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assert_true(typeof result === 'object');
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assert_true('usage' in result);
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assert_equals(typeof result.usage, 'number');
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assert_true('quota' in result);
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assert_equals(typeof result.quota, 'number');
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});
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}, 'estimate() resolves to dictionary with members');
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promise_test(function(t) {
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const large_value = new Uint8Array(1e6);
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const dbname = `db-${location}-${t.name}`;
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let db, before, after;
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indexedDB.deleteDatabase(dbname);
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return new Promise((resolve, reject) => {
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const open = indexedDB.open(dbname);
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open.onerror = () => { reject(open.error); };
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open.onupgradeneeded = () => {
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const connection = open.result;
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connection.createObjectStore('store');
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};
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open.onsuccess = () => {
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const connection = open.result;
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t.add_cleanup(() => {
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connection.close();
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indexedDB.deleteDatabase(dbname);
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});
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resolve(connection);
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};
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})
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.then(connection => {
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db = connection;
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return navigator.storage.estimate();
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})
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.then(estimate => {
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before = estimate.usage;
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return new Promise((resolve, reject) => {
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const tx = db.transaction('store', 'readwrite');
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tx.objectStore('store').put(large_value, 'key');
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tx.onabort = () => { reject(tx.error); };
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tx.oncomplete = () => { resolve(); };
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});
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})
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.then(() => {
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return navigator.storage.estimate();
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})
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.then(estimate => {
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after = estimate.usage;
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assert_greater_than(after, before,
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'estimated usage should increase');
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});
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}, 'estimate() shows usage increase after 1MB IndexedDB record is stored');
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</script>
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