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

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// META: global=window,worker
// META: title=IDBCursor direction - index
// META: script=resources/support.js
'use strict';
let records = ['Alice', 'Bob', 'Bob', 'Greg'];
let cases = [
{dir: 'next', expect: ['Alice:0', 'Bob:1', 'Bob:2', 'Greg:3']},
{dir: 'prev', expect: ['Greg:3', 'Bob:2', 'Bob:1', 'Alice:0']},
{dir: 'nextunique', expect: ['Alice:0', 'Bob:1', 'Greg:3']},
{dir: 'prevunique', expect: ['Greg:3', 'Bob:1', 'Alice:0']},
];
cases.forEach(function(testcase) {
let dir = testcase.dir;
let expect = testcase.expect;
indexeddb_test(
function(t, db, tx) {
let objStore = db.createObjectStore('test');
objStore.createIndex('idx', 'name');
for (let i = 0; i < records.length; i++)
objStore.add({name: records[i]}, i);
},
function(t, db) {
let count = 0;
let rq = db.transaction('test', 'readonly')
.objectStore('test')
.index('idx')
.openCursor(undefined, dir);
rq.onsuccess = t.step_func(function(e) {
let cursor = e.target.result;
if (!cursor) {
assert_equals(count, expect.length, 'cursor runs');
t.done();
}
assert_equals(
cursor.value.name + ':' + cursor.primaryKey, expect[count],
'cursor.value');
count++;
cursor.continue();
});
rq.onerror = t.step_func(function(e) {
e.preventDefault();
e.stopPropagation();
assert_unreached('rq.onerror - ' + e.message);
});
},
'IDBCursor direction - index - ' + dir);
});