|  | <!DOCTYPE html> | 
|  | <title>IDBDatabase.transaction() - attempt to open a transaction with invalid mode </title> | 
|  | <link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal"> | 
|  | <script src="/resources/testharness.js"></script> | 
|  | <script src="/resources/testharnessreport.js"></script> | 
|  | <script src="support.js"></script> | 
|  |  | 
|  | <script> | 
|  | var db, | 
|  | t = async_test(document.title, {timeout: 10000}), | 
|  | open_rq = createdb(t); | 
|  |  | 
|  | open_rq.onupgradeneeded = function(e) { | 
|  | db = e.target.result; | 
|  | db.createObjectStore('test'); | 
|  | }; | 
|  |  | 
|  | open_rq.onsuccess = function(e) { | 
|  | assert_throws({ name: 'TypeError' }, | 
|  | function() { db.transaction('test', 'whatever'); }); | 
|  |  | 
|  | t.done(); | 
|  | }; | 
|  | </script> | 
|  |  | 
|  | <div id="log"></div> |