
PASS IDBCursor.advance() - invalid - attempt to call advance twice 
PASS IDBCursor.advance() - invalid - pass something other than number 
PASS IDBCursor.advance() - invalid - pass null/undefined 
PASS IDBCursor.advance() - invalid - missing argument 
PASS IDBCursor.advance() - invalid - pass negative numbers 
PASS IDBCursor.advance() - invalid - got value not set on exception