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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 function emptyCursorSuccess()
      6 {
      7   debug('Empty cursor opened successfully.');
      8   done();
      9 }
     10 
     11 function openEmptyCursor()
     12 {
     13   debug('Opening an empty cursor.');
     14   keyRange = IDBKeyRange.lowerBound('InexistentKey');
     15   request = objectStore.openCursor(keyRange);
     16   request.onsuccess = emptyCursorSuccess;
     17   request.onerror = unexpectedErrorCallback;
     18 }
     19 
     20 function cursorSuccess()
     21 {
     22   var cursor = event.target.result;
     23   if (cursor === null) {
     24     debug('Cursor reached end of range.');
     25     openEmptyCursor();
     26     return;
     27   }
     28 
     29   debug('Cursor opened successfully.');
     30   shouldBe("event.target.result.direction", "'next'");
     31   shouldBe("event.target.result.key", "3.14");
     32   shouldBe("event.target.result.value", "'myValue'");
     33 
     34   cursor.continue();
     35 }
     36 
     37 function openCursor(objectStore)
     38 {
     39   debug('Opening cursor');
     40   var keyRange = IDBKeyRange.lowerBound(3.12);
     41   var request = objectStore.openCursor(keyRange);
     42   request.onsuccess = cursorSuccess;
     43   request.onerror = unexpectedErrorCallback;
     44 }
     45 
     46 function dataAddedSuccess()
     47 {
     48   debug('Data added');
     49   openCursor(objectStore);
     50 }
     51 
     52 function populateObjectStore()
     53 {
     54   debug('Populating object store');
     55   db = event.target.result;
     56   deleteAllObjectStores(db);
     57   window.objectStore = db.createObjectStore('test');
     58   var request = objectStore.add('myValue', 3.14);
     59   request.onsuccess = dataAddedSuccess;
     60   request.onerror = unexpectedErrorCallback;
     61 }
     62 
     63 function test() {
     64   indexedDBTest(populateObjectStore);
     65 }
     66