This tests some obvious failures that can happen while calling IDBObjectStore.delete(). On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB; indexedDB.deleteDatabase(dbname) indexedDB.open(dbname) Initial upgrade needed: Old version - 0 New version - 1 Failed to delete record from object store with an invalid key Failed to delete record from object store that has been deleted Initial upgrade versionchange transaction complete Failed to delete a record in read-only transaction Failed to delete record with inactive transaction readwrite transaction complete PASS successfullyParsed is true TEST COMPLETE