<!DOCTYPE html>
<title>IndexedDB: Verify transaction activation behavior around microtasks</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="resources/testharness-helpers.js"></script>
<script>
function isTransactionActive(tx, storeName) {
try {
tx.objectStore(storeName).get(0);
return true;
} catch (ex) {
// The exception could be TransactionInactiveError or InvalidStateError
// depending on the test and whether the transaction has committed yet.
return false;
}
}
indexeddb_test(
function(t, db) {
db.createObjectStore('store');
},
function(t, db) {
Promise.resolve().then(t.step_func(function() {
var tx = db.transaction('store', 'readonly', {durability: 'relaxed'});
var request = tx.objectStore('store').get(0);
request.onerror = t.unreached_func('request should not fail');
request.onsuccess = t.step_func(function() {
assert_true(isTransactionActive(tx, 'store'),
'Transaction should be active during event dispatch');
setTimeout(t.step_func(function() {
assert_false(isTransactionActive(tx, 'store'),
'Transaction should be inactive once control returns to event loop');
t.done();
}), 0);
});
}));
},
'Transactions created in microtasks are deactivated when control returns to the event loop'
);
indexeddb_test(
function(t, db) {
db.createObjectStore('store');
},
function(t, db) {
var aesAlgorithmKeyGen = {name: "AES-CBC", length: 128};
crypto.subtle.generateKey(aesAlgorithmKeyGen, false, ["encrypt"]).then(t.step_func(function() {
var tx = db.transaction('store', 'readonly', {durability: 'relaxed'});
var request = tx.objectStore('store').get(0);
request.onerror = t.unreached_func('request should not fail');
request.onsuccess = t.step_func(function() {
assert_true(isTransactionActive(tx, 'store'),
'Transaction should be active during event dispatch');
setTimeout(t.step_func(function() {
assert_false(isTransactionActive(tx, 'store'),
'Transaction should be inactive once control returns to event loop');
t.done();
}), 0);
});
}));
},
'Transactions created in microtasks resolved by host behavior are deactivated when control returns to the event loop'
);
indexeddb_test(
function(t, db) {
db.createObjectStore('store');
},
function(t, db) {
var tx;
Promise.resolve().then(function() {
tx = db.transaction('store', 'readonly', {durability: 'relaxed'});
assert_true(isTransactionActive(tx, 'store'),
'Transaction should be active when created');
}).then(t.step_func(function() {
assert_true(isTransactionActive(tx, 'store'),
'Transaction should be active until control returns to event loop');
setTimeout(t.step_func(function() {
assert_false(isTransactionActive(tx, 'store'),
'Transaction should be inactive once control returns to event loop');
t.done();
}), 0);
}));
},
'Transactions created in microtasks remain active in subsequent microtasks'
);
indexeddb_test(
function(t, db) {
db.createObjectStore('store');
},
function(t, db) {
var tx = db.transaction('store', 'readonly', {durability: 'relaxed'});
var request = tx.objectStore('store').get(0);
request.onerror = t.unreached_func('request should not fail');
request.onsuccess = t.step_func(function() {
assert_true(isTransactionActive(tx, 'store'),
'Transaction should be active during event dispatch');
Promise.resolve().then(t.step_func(function() {
assert_true(isTransactionActive(tx, 'store'),
'Microtasks are run as part of event dispatch, so transaction should still be active');
setTimeout(t.step_func(function() {
assert_false(isTransactionActive(tx, 'store'),
'Transaction should be inactive once control returns to the event loop');
t.done();
}), 0);
}));
});
},
'Within request event dispatch, transactions remain active across microtasks'
);
</script>
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