mozilla-central/testing/web-platform/tests/IndexedDB/transaction-scheduling-within-database.any.js (file symbol)

Source code

Revision control

Copy as Markdown

Other Tools

Test Info:

// META: script=resources/support.js
indexeddb_test(
(t, db) => {
const store = db.createObjectStore('store');
store.put('value', 'key');
},
(t, db) => {
let transaction1GetSuccess = false;
let transaction2GetSuccess = false;
const onTransactionComplete = barrier_func(2, t.step_func_done(() => {
assert_true(transaction1GetSuccess,
'transaction1 should have executed at least one request');
assert_true(transaction2GetSuccess,
'transaction1 should have executed at least one request');
}));
const transaction1 = db.transaction('store', 'readonly', {durability: 'relaxed'});
transaction1.onabort = t.unreached_func('transaction1 should not abort');
transaction1.oncomplete = t.step_func(onTransactionComplete);
const transaction2 = db.transaction('store', 'readonly', {durability: 'relaxed'});
transaction2.onabort = t.unreached_func('transaction2 should not abort');
transaction2.oncomplete = t.step_func(onTransactionComplete);
// Keep both transactions alive until each has reported at least one
// successful operation
function doTransaction1Get() {
const request = transaction1.objectStore('store').get('key');
request.onerror = t.unreached_func('request should not fail');
request.onsuccess = t.step_func(() => {
transaction1GetSuccess = true;
if (!transaction2GetSuccess)
doTransaction1Get();
});
}
function doTransaction2Get() {
// NOTE: No logging since execution order is not deterministic.
const request = transaction2.objectStore('store').get('key');
request.onerror = t.unreached_func('request should not fail');
request.onsuccess = t.step_func(() => {
transaction2GetSuccess = true;
if (!transaction1GetSuccess)
doTransaction2Get();
});
}
doTransaction1Get();
doTransaction2Get();
},
'Check that read-only transactions within a database can run in parallel.');