content/test/data/indexeddb/cursor_test.js

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

function emptyCursorSuccess()
{
  debug('Empty cursor opened successfully.');
  done();
}

function openEmptyCursor()
{
  debug('Opening an empty cursor.');
  keyRange = IDBKeyRange.lowerBound('InexistentKey');
  request = objectStore.openCursor(keyRange);
  request.onsuccess = emptyCursorSuccess;
  request.onerror = unexpectedErrorCallback;
}

function cursorSuccess()
{
  var cursor = event.target.result;
  if (cursor === null) {
    debug('Cursor reached end of range.');
    openEmptyCursor();
    return;
  }

  debug('Cursor opened successfully.');
  shouldBe("event.target.result.direction", "'next'");
  shouldBe("event.target.result.key", "3.14");
  shouldBe("event.target.result.value", "'myValue'");

  cursor.continue();
}

function openCursor(objectStore)
{
  debug('Opening cursor');
  var keyRange = IDBKeyRange.lowerBound(3.12);
  var request = objectStore.openCursor(keyRange);
  request.onsuccess = cursorSuccess;
  request.onerror = unexpectedErrorCallback;
}

function dataAddedSuccess()
{
  debug('Data added');
  openCursor(objectStore);
}

function populateObjectStore()
{
  debug('Populating object store');
  db = event.target.result;
  deleteAllObjectStores(db);
  window.objectStore = db.createObjectStore('test');
  var request = objectStore.add('myValue', 3.14);
  request.onsuccess = dataAddedSuccess;
  request.onerror = unexpectedErrorCallback;
}

function test() {
  indexedDBTest(populateObjectStore);
}