Test that an aborted 'versionchange' transaction closes the connection. 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, 1) prepareDatabase(): db = event.target.result db.createObjectStore('store') onOpen(): db = event.target.result db.close() openAgain(): request = indexedDB.open(dbname, 2) onUpgradeNeeded(): db = event.target.result transaction = event.target.transaction sawTransactionAbort = false onTransactionAbort(): sawTransactionAbort = true creating a transaction should fail because connection is closed: Expecting exception from db.transaction('store') PASS Exception was thrown. PASS code is DOMException.INVALID_STATE_ERR PASS ename is 'InvalidStateError' Exception message: Failed to execute 'transaction' on 'IDBDatabase': The database connection is closing. onOpenError(): PASS sawTransactionAbort is true creating a transaction should fail because connection is closed: Expecting exception from db.transaction('store') PASS Exception was thrown. PASS code is DOMException.INVALID_STATE_ERR PASS ename is 'InvalidStateError' Exception message: Failed to execute 'transaction' on 'IDBDatabase': The database connection is closing. PASS successfullyParsed is true TEST COMPLETE