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<!doctype html>
<meta charset=utf-8>
<title>IndexedDB: Index iteration with cursor updates/deletes</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/support.js"></script>
<script>
const objStoreValues = [
{name: 'foo', id: 1},
{name: 'bar', id: 2},
{name: 'foo', id: 3},
{name: 'bar', id: 4},
];
const objStoreValuesByIndex = [
objStoreValues[1],
objStoreValues[3],
objStoreValues[0],
objStoreValues[2],
];
const functionsThatShouldNotAffectIteration = [
cursor => cursor.update({}),
cursor => cursor.delete(),
];
functionsThatShouldNotAffectIteration.forEach((func) => indexeddb_test(
(t, db) => {
const objStore = db.createObjectStore('items', {autoIncrement: true});
objStore.createIndex('name', 'name', {unique: false});
objStoreValues.forEach((value) => objStore.add(value));
},
(t, db) => {
const txn = db.transaction('items', 'readwrite', {durability: 'relaxed'});
const objStore = txn.objectStore('items');
const nameIndex = objStore.index('name');
const cursorValues = [];
nameIndex.openCursor().onsuccess = (evt) => {
const cursor = evt.target.result;
if (cursor) {
func(cursor);
cursorValues.push(cursor.value);
cursor.continue();
} else {
assert_equals(cursorValues.length, 4,
`Cursor should iterate over 4 records`);
cursorValues.forEach((value, i) => {
assert_object_equals(value, objStoreValuesByIndex[i]);
});
t.done();
}
}
},
`Calling ${func} doesn't affect index iteration`
));
</script>
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