IndexedDB: Log exception messages

LayoutTests/storage/indexeddb/transaction-complete-workers-expected.txt

 [Worker] Test IndexedDB workers, recursion, and transaction termination.
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
 Starting worker: resources/transaction-complete-workers.js
 [Worker] indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB;
 [Worker] 
 [Worker] dbname = "transaction-complete-workers.js"
 [Worker] indexedDB.deleteDatabase(dbname)
 [Worker] indexedDB.open(dbname)
 [Worker] 
 [Worker] prepareDatabase():
 [Worker] db.createObjectStore('store')
 [Worker] 
 [Worker] createTransaction():
 [Worker] transaction = db.transaction('store')
 [Worker] store = transaction.objectStore('store')
 PASS [Worker] Transaction completed
 [Worker] Expecting exception from store.get(0)
 PASS [Worker] Exception was thrown.
 PASS [Worker] code is 0
 PASS [Worker] ename is 'TransactionInactiveError'
+[Worker] Exception message: The transaction has finished.
 [Worker] 
 [Worker] recursionTest():
 [Worker] transaction = db.transaction('store')
 [Worker] store = transaction.objectStore('store')
 [Worker] store.get(0)
 PASS [Worker] transaction is active
 [Worker] recursion depth: 1
 [Worker] store.get(0)
 PASS [Worker] transaction is still active
 [Worker] recursion depth: 2
 [Worker] store.get(0)
 PASS [Worker] transaction is still active
 [Worker] recursion depth: 3
 [Worker] store.get(0)
 PASS [Worker] transaction is still active
 [Worker] recursion depth: 3
 [Worker] store.get(0)
 PASS [Worker] transaction is still active
 [Worker] recursion depth: 2
 [Worker] store.get(0)
 PASS [Worker] transaction is still active
 [Worker] recursion depth: 1
 [Worker] store.get(0)
 PASS [Worker] transaction is still active
 PASS [Worker] transaction completed
 [Worker] Expecting exception from store.get(0)
 PASS [Worker] Exception was thrown.
 PASS [Worker] code is 0
 PASS [Worker] ename is 'TransactionInactiveError'
+[Worker] Exception message: The transaction has finished.
 [Worker] 
 [Worker] trying a timeout callback:
 [Worker] setTimeout(timeoutTest, 0)
 [Worker] 
 [Worker] timeoutTest():
 [Worker] transaction = db.transaction('store')
 [Worker] store = transaction.objectStore('store')
 PASS [Worker] transaction started in setTimeout() callback completed
 [Worker] Expecting exception from store.get(0)
 PASS [Worker] Exception was thrown.
 PASS [Worker] code is 0
 PASS [Worker] ename is 'TransactionInactiveError'
+[Worker] Exception message: The transaction has finished.
 [Worker] 
 [Worker] errorTest():
 [Worker] self.old_onerror = self.onerror
 [Worker] self.onerror = errorHandler
 [Worker] 
 [Worker] errorHandler():
 [Worker] self.onerror = self.old_onerror
 [Worker] transaction = db.transaction('store')
 [Worker] store = transaction.objectStore('store')
 Got expected error from worker, ignoring
 event.preventDefault()
 PASS [Worker] Transaction completed
 [Worker] Expecting exception from store.get(0)
 PASS [Worker] Exception was thrown.
 PASS [Worker] code is 0
 PASS [Worker] ename is 'TransactionInactiveError'
+[Worker] Exception message: The transaction has finished.
 PASS successfullyParsed is true
 
 TEST COMPLETE