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// META: title=Reverse Cursor Validity
// META: script=resources/support-promises.js
async function iterateAndReturnAllCursorResult(testCase, cursor) {
return new Promise((resolve, reject) => {
let results = [];
cursor.onsuccess = testCase.step_func(function(e) {
let cursor = e.target.result;
if (!cursor) {
resolve(results);
return;
}
results.push(cursor.value);
cursor.continue();
});
cursor.onerror = reject;
});
}
promise_test(async testCase => {
const db = await createDatabase(testCase, db => {
db.createObjectStore('objectStore', {keyPath: 'key'})
.createIndex('index', 'indexedOn');
});
const txn1 = db.transaction(['objectStore'], 'readwrite');
txn1.objectStore('objectStore').add({'key': 'firstItem', 'indexedOn': 3});
const txn2 = db.transaction(['objectStore'], 'readwrite');
txn2.objectStore('objectStore').put({'key': 'firstItem', 'indexedOn': -1});
const txn3= db.transaction(['objectStore'], 'readwrite');
txn3.objectStore('objectStore').add({'key': 'secondItem', 'indexedOn': 2});
const txn4 = db.transaction(['objectStore'], 'readonly');
cursor = txn4.objectStore('objectStore').index('index').openCursor(IDBKeyRange.bound(0, 10), "prev");
let results = await iterateAndReturnAllCursorResult(testCase, cursor);
assert_equals(results.length, 1);
await promiseForTransaction(testCase, txn4);
db.close();
}, 'Reverse cursor sees update from separate transactions.');
promise_test(async testCase => {
const db = await createDatabase(testCase, db => {
db.createObjectStore('objectStore', {keyPath: 'key'})
.createIndex('index', 'indexedOn');
});
const txn = db.transaction(['objectStore'], 'readwrite');
txn.objectStore('objectStore').add({'key': '1', 'indexedOn': 2});
txn.objectStore('objectStore').put({'key': '1', 'indexedOn': -1});
txn.objectStore('objectStore').add({'key': '2', 'indexedOn': 1});
const txn2 = db.transaction(['objectStore'], 'readonly');
cursor = txn2.objectStore('objectStore').index('index').openCursor(IDBKeyRange.bound(0, 10), "prev");
let results = await iterateAndReturnAllCursorResult(testCase, cursor);
assert_equals(1, results.length);
await promiseForTransaction(testCase, txn2);
db.close();
}, 'Reverse cursor sees in-transaction update.');
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