mozilla-central/testing/web-platform/tests/IndexedDB/idbcursor_iterating.any.js (file symbol)

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// META: global=window,worker
// META: title=IDBCursor.continue() - object store
// META: script=resources/support.js
'use strict';
async_test(t => {
let db;
let count = 0;
let open_rq = createdb(t);
open_rq.onupgradeneeded = function (e) {
db = e.target.result;
t.add_cleanup(function () { db.close(); indexedDB.deleteDatabase(db.name); });
let objStore = db.createObjectStore("test", { keyPath: "key" });
for (let i = 0; i < 500; i++)
objStore.add({ key: i, val: "val_" + i });
let rq = objStore.add({ key: 500, val: "val_500" });
rq.onsuccess = t.step_func(function () {
for (let i = 999; i > 500; i--)
objStore.add({ key: i, val: "val_" + i });
});
objStore.createIndex('index', ['key', 'val']);
};
open_rq.onsuccess = function (e) {
let cursor_rq = db.transaction("test", "readwrite", { durability: 'relaxed' })
.objectStore("test")
.openCursor();
cursor_rq.onsuccess = t.step_func(function (e) {
let cursor = e.target.result,
store = e.target.source;
if (!cursor) {
assert_equals(count, 997, "cursor run count");
let rq = e.target.source.count();
rq.onsuccess = t.step_func(function (e) {
assert_equals(e.target.result, 995, "object count");
t.done();
});
return;
}
switch (cursor.key) {
case 10:
assert_equals(count, cursor.key, "count");
store.delete(11);
break;
case 12:
case 499:
case 500:
case 501:
assert_equals(count, cursor.key - 1, "count");
break;
// Delete the next key
case 510:
store.delete(511);
break;
// Delete randomly
case 512:
store.delete(611);
store.delete(499);
store.delete(500);
break;
// Delete and add a new key
case 520:
store.delete(521);
store.add({ key: 521, val: "new" });
break;
case 521:
assert_equals(cursor.value.val, "new");
break;
// We should only be here once although we're basically making the index
// "heavier" with its new key.
case 530:
assert_equals(cursor.value.val, "val_530");
cursor.update({ key: 530, val: "val_531" })
store.get(530).onsuccess = t.step_func(function (e) {
assert_equals(e.target.result.val, "val_531");
});
break;
// Shouldn't happen.
case 11:
case 511:
case 611:
assert_unreached(cursor.key + " should be deleted and never run");
break;
}
cursor.continue();
count++;
});
};
}, "Iterate and Delete elements");