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