Add top image extraction unit test
Add top image extraction unit test

elaatifi/newspaper,wannaphongcom/newspaper,Factr/newspaper,kotrfa/newspaper,muntasir2000/newspaper,itech001/newspaper,ThoughtWorksInc/newspaper,tarundeep30000/newspaper,surajssd/newspaper,curita/newspaper,curita/newspaper,autumnz613/HangzhoulLianjia,shagunsodhani/newspaper,tarundeep30000/newspaper,MathematicianVogt/newspaper,Tskatom/newspaper,davecrumbacher/newspaper