| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>Transactions deactivation timing</title> |
| <link rel="help" href="https://w3c.github.io/IndexedDB/#dom-idbdatabase-transaction"> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script src=support.js></script> |
| <script> |
| |
| indexeddb_test( |
| (t, db, tx) => { |
| db.createObjectStore('store'); |
| }, |
| (t, db) => { |
| const tx = db.transaction('store'); |
| const release_tx = keep_alive(tx, 'store'); |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active after creation'); |
| |
| setTimeout(t.step_func(() => { |
| assert_false(is_transaction_active(tx, 'store'), |
| 'Transaction should be inactive in next task'); |
| release_tx(); |
| t.done(); |
| }), 0); |
| }, |
| 'New transactions are deactivated before next task'); |
| |
| indexeddb_test( |
| (t, db, tx) => { |
| db.createObjectStore('store'); |
| }, |
| (t, db) => { |
| const tx = db.transaction('store'); |
| const release_tx = keep_alive(tx, 'store'); |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active after creation'); |
| |
| Promise.resolve().then(t.step_func(() => { |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active in microtask checkpoint'); |
| release_tx(); |
| t.done(); |
| })); |
| }, |
| 'New transactions are not deactivated until after the microtask checkpoint'); |
| |
| indexeddb_test( |
| (t, db, tx) => { |
| db.createObjectStore('store'); |
| }, |
| (t, db) => { |
| let tx, release_tx; |
| |
| Promise.resolve().then(t.step_func(() => { |
| tx = db.transaction('store'); |
| release_tx = keep_alive(tx, 'store'); |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active after creation'); |
| })); |
| |
| setTimeout(t.step_func(() => { |
| assert_false(is_transaction_active(tx, 'store'), |
| 'Transaction should be inactive in next task'); |
| release_tx(); |
| t.done(); |
| }), 0); |
| }, |
| 'New transactions from microtask are deactivated before next task'); |
| |
| indexeddb_test( |
| (t, db, tx) => { |
| db.createObjectStore('store'); |
| }, |
| (t, db) => { |
| let tx, release_tx; |
| |
| Promise.resolve().then(t.step_func(() => { |
| tx = db.transaction('store'); |
| release_tx = keep_alive(tx, 'store'); |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active after creation'); |
| })); |
| |
| Promise.resolve().then(t.step_func(() => { |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active in microtask checkpoint'); |
| release_tx(); |
| t.done(); |
| })); |
| }, |
| 'New transactions from microtask are still active through the ' + |
| 'microtask checkpoint'); |
| |
| |
| indexeddb_test( |
| (t, db, tx) => { |
| db.createObjectStore('store'); |
| }, |
| (t, db) => { |
| // This transaction serves as the source of an event seen by multiple |
| // listeners. A DOM event with multiple listeners could be used instead, |
| // but not via dispatchEvent() because (drumroll...) that happens |
| // synchronously so microtasks don't run between steps. |
| const tx = db.transaction('store'); |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active after creation'); |
| |
| const request = tx.objectStore('store').get(0); |
| let new_tx; |
| let first_listener_ran = false; |
| let microtasks_ran = false; |
| request.addEventListener('success', t.step_func(() => { |
| first_listener_ran = true; |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active in callback'); |
| |
| // We check to see if this transaction is active across unrelated event |
| // dispatch steps. |
| new_tx = db.transaction('store'); |
| assert_true(is_transaction_active(new_tx, 'store'), |
| 'New transaction should be active after creation'); |
| |
| Promise.resolve().then(t.step_func(() => { |
| microtasks_ran = true; |
| assert_true(is_transaction_active(new_tx, 'store'), |
| 'New transaction is still active in microtask checkpoint'); |
| })); |
| |
| })); |
| request.addEventListener('success', t.step_func(() => { |
| assert_true(first_listener_ran, 'first listener ran first'); |
| assert_true(microtasks_ran, 'microtasks ran before second listener'); |
| assert_true(is_transaction_active(tx, 'store'), |
| 'Transaction should be active in callback'); |
| assert_false(is_transaction_active(new_tx, 'store'), |
| 'New transaction should be inactive in unrelated callback'); |
| t.done(); |
| })); |
| }, |
| 'Deactivation of new transactions happens at end of invocation'); |
| |
| </script> |
