Added unittest for issue3.
Added unittest for issue3.

andialbrecht/sqlparse,vmuriart/sqlparse,zhongdai/sqlparse,actsasgeek/sqlparse,tailhook/sqlparse,AndiDog/sqlparse,tailhook/sqlparse,actsasgeek/sqlparse,payne/sqlparse,AndiDog/sqlparse,Yelp/sqlparse,Yelp/sqlparse,zhongdai/sqlparse,AndiDog/sqlparse,Yelp/sqlparse,benekastah/sqlparse,tailhook/sqlparse,MariaPet/sqlparse,adamgreenhall/sqlparse,MariaPet/sqlparse,zhongdai/sqlparse,adamgreenhall/sqlparse,actsasgeek/sqlparse,payne/sqlparse,payne/sqlparse,adamgreenhall/sqlparse