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event-dispatch-active-flag.html
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<!DOCTYPE html>
<meta charset=utf-8>
<title>Transaction active flag is set during event dispatch</title>
<link rel="help" href="https://w3c.github.io/IndexedDB/#fire-success-event">
<link rel="help" href="https://w3c.github.io/IndexedDB/#fire-error-event">
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=resources/support.js></script>
<script>
indexeddb_test(
(t, db, tx) => {
db.createObjectStore('store');
},
(t, db) => {
const tx = db.transaction('store', 'readonly', {durability: 'relaxed'});
const release_tx = keep_alive(tx, 'store');
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active after creation');
const request = tx.objectStore('store').get(0);
request.onerror = t.unreached_func('request should succeed');
request.onsuccess = () => {
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active during success handler');
let saw_handler_promise = false;
Promise.resolve().then(t.step_func(() => {
saw_handler_promise = true;
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active in handler\'s microtasks');
}));
setTimeout(t.step_func(() => {
assert_true(saw_handler_promise);
assert_false(is_transaction_active(tx, 'store'),
'Transaction should be inactive in next task');
release_tx();
t.done();
}), 0);
};
},
'Transactions are active during success handlers');
indexeddb_test(
(t, db, tx) => {
db.createObjectStore('store');
},
(t, db) => {
const tx = db.transaction('store', 'readonly', {durability: 'relaxed'});
const release_tx = keep_alive(tx, 'store');
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active after creation');
const request = tx.objectStore('store').get(0);
request.onerror = t.unreached_func('request should succeed');
request.addEventListener('success', () => {
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active during success listener');
let saw_listener_promise = false;
Promise.resolve().then(t.step_func(() => {
saw_listener_promise = true;
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active in listener\'s microtasks');
}));
setTimeout(t.step_func(() => {
assert_true(saw_listener_promise);
assert_false(is_transaction_active(tx, 'store'),
'Transaction should be inactive in next task');
release_tx();
t.done();
}), 0);
});
},
'Transactions are active during success listeners');
indexeddb_test(
(t, db, tx) => {
db.createObjectStore('store');
},
(t, db) => {
const tx = db.transaction('store', 'readwrite', {durability: 'relaxed'});
const release_tx = keep_alive(tx, 'store');
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active after creation');
tx.objectStore('store').put(0, 0);
const request = tx.objectStore('store').add(0, 0);
request.onsuccess = t.unreached_func('request should fail');
request.onerror = e => {
e.preventDefault();
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active during error handler');
let saw_handler_promise = false;
Promise.resolve().then(t.step_func(() => {
saw_handler_promise = true;
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active in handler\'s microtasks');
}));
setTimeout(t.step_func(() => {
assert_true(saw_handler_promise);
assert_false(is_transaction_active(tx, 'store'),
'Transaction should be inactive in next task');
release_tx();
t.done();
}), 0);
};
},
'Transactions are active during error handlers');
indexeddb_test(
(t, db, tx) => {
db.createObjectStore('store');
},
(t, db) => {
const tx = db.transaction('store', 'readwrite', {durability: 'relaxed'});
const release_tx = keep_alive(tx, 'store');
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active after creation');
tx.objectStore('store').put(0, 0);
const request = tx.objectStore('store').add(0, 0);
request.onsuccess = t.unreached_func('request should fail');
request.addEventListener('error', e => {
e.preventDefault();
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active during error listener');
let saw_listener_promise = false;
Promise.resolve().then(t.step_func(() => {
saw_listener_promise = true;
assert_true(is_transaction_active(tx, 'store'),
'Transaction should be active in listener\'s microtasks');
}));
setTimeout(t.step_func(() => {
assert_true(saw_listener_promise);
assert_false(is_transaction_active(tx, 'store'),
'Transaction should be inactive in next task');
release_tx();
t.done();
}), 0);
});
},
'Transactions are active during error listeners');
</script>