rem: return getService().openDatabase(getTestDB()); 
add: return gDBConn ? gDBConn : getService().openDatabase(getTestDB()); 
context: function getOpenedDatabase(){  return getService().openDatabase(getTestDB());}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/e1e1617bd1cfc184694f3a9863520e2957f9bb04/head_storage.js/buggy/storage/test/unit/head_storage.js