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estimate-indexeddb.https.any.js
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estimate-indexeddb.https.any.js
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// META: title=StorageManager: estimate() for indexeddb
test(t => {
assert_true('estimate' in navigator.storage);
assert_equals(typeof navigator.storage.estimate, 'function');
assert_true(navigator.storage.estimate() instanceof Promise);
}, 'estimate() method exists and returns a Promise');
promise_test(t => {
return navigator.storage.estimate().then(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(t => {
const arraySize = 1e6;
const objectStoreName = "storageManager";
const dbname = this.window ? window.location.pathname :
"estimate-worker.https.html";
let db;
let usageBeforeCreate, usageAfterCreate, usageAfterPut;
function deleteDB(name) {
return new Promise((resolve, reject) => {
let deleteRequest = indexedDB.deleteDatabase(name);
deleteRequest.onerror = () => { reject(deleteRequest.error); };
deleteRequest.onsuccess = () => { resolve(); };
});
}
return deleteDB(dbname)
.then(() => {
return navigator.storage.estimate();
})
.then(estimate => {
usageBeforeCreate = estimate.usage;
return new Promise((resolve, reject) => {
let openRequest = indexedDB.open(dbname);
openRequest.onerror = () => { reject(openRequest.error); };
openRequest.onupgradeneeded = event => {
openRequest.result.createObjectStore(objectStoreName);
};
openRequest.onsuccess = () => { resolve(openRequest.result); };
});
})
.then(connection => {
db = connection;
return navigator.storage.estimate();
})
.then(estimate => {
usageAfterCreate = estimate.usage;
assert_greater_than(
usageAfterCreate, usageBeforeCreate,
'estimated usage should increase after object store is created');
let txn = db.transaction(objectStoreName, 'readwrite');
let buffer = new ArrayBuffer(arraySize);
let view = new Uint8Array(buffer);
for (let i = 0; i < arraySize; i++) {
view[i] = parseInt(Math.random() * 255);
}
let testBlob = new Blob([buffer], {type: "binary/random"});
txn.objectStore(objectStoreName).add(testBlob, 1);
return new Promise((resolve, reject) => {
txn.onabort = () => { reject(txn.error); };
txn.oncomplete = () => { resolve(); };
});
})
.then(() => {
return navigator.storage.estimate();
})
.then(estimate => {
usageAfterPut = estimate.usage;
assert_greater_than(
usageAfterPut, usageAfterCreate,
'estimated usage should increase after large value is stored');
db.close();
return deleteDB(dbname);
})
.then(() => {
t.done();
});
}, 'estimate() shows usage increase after large value is stored');