Add tests to extract_first()
Add tests to extract_first()

scrapy/scrapy,arush0311/scrapy,WilliamKinaan/scrapy,taito/scrapy,johnardavies/scrapy,barraponto/scrapy,taito/scrapy,ssteo/scrapy,dacjames/scrapy,liyy7/scrapy,kashyap32/scrapy,JacobStevenR/scrapy,Lucifer-Kim/scrapy,yusofm/scrapy,kashyap32/scrapy,ylcolala/scrapy,yarikoptic/scrapy,eLRuLL/scrapy,cleydson/scrapy,URXtech/scrapy,ssteo/scrapy,livepy/scrapy,ssh-odoo/scrapy,Digenis/scrapy,darkrho/scrapy-scrapy,foromer4/scrapy,ramiro/scrapy,fontenele/scrapy,nguyenhongson03/scrapy,stenskjaer/scrapy,lacrazyboy/scrapy,jc0n/scrapy,w495/scrapy,OpenWhere/scrapy,rklabs/scrapy,Parlin-Galanodel/scrapy,jdemaeyer/scrapy,KublaikhanGeek/scrapy,zorojean/scrapy,agreen/scrapy,curita/scrapy,kazitanvirahsan/scrapy,crasker/scrapy,Preetwinder/scrapy,elijah513/scrapy,johnardavies/scrapy,hbwzhsh/scrapy,bmess/scrapy,codebhendi/scrapy,WilliamKinaan/scrapy,hyrole/scrapy,tagatac/scrapy,w495/scrapy,elacuesta/scrapy,wujuguang/scrapy,godfreyy/scrapy,smaty1/scrapy,ArturGaspar/scrapy,dgillis/scrapy,foromer4/scrapy,elijah513/scrapy,Zephor5/scrapy,carlosp420/scrapy,jdemaeyer/scrapy,haiiiiiyun/scrapy,olorz/scrapy,Adai0808/scrapy-1,TarasRudnyk/scrapy,dacjames/scrapy,mgedmin/scrapy,nguyenhongson03/scrapy,liyy7/scrapy,zorojean/scrapy,avtoritet/scrapy,coderabhishek/scrapy,pablohoffman/scrapy,wangjun/scrapy,fpy171/scrapy,cleydson/scrapy,IvanGavran/scrapy,livepy/scrapy,TarasRudnyk/scrapy,huoxudong125/scrapy,z-fork/scrapy,barraponto/scrapy,Chenmxs/scrapy,Preetwinder/scrapy,cleydson/scrapy,agusc/scrapy,kmike/scrapy,Partoo/scrapy,Allianzcortex/scrapy,rolando-contrib/scrapy,hectoruelo/scrapy,hyrole/scrapy,rolando/scrapy,haiiiiiyun/scrapy,cursesun/scrapy,stenskjaer/scrapy,olafdietsche/scrapy,zhangtao11/scrapy,jc0n/scrapy,olorz/scrapy,Cnfc19932/scrapy,crasker/scrapy,yidongliu/scrapy,nguyenhongson03/scrapy,snowdream1314/scrapy,dangra/scrapy,zjuwangg/scrapy,johnardavies/scrapy,pfctdayelise/scrapy,eliasdorneles/scrapy,pranjalpatil/scrapy,wzyuliyang/scrapy,z-fork/scrapy,scrapy/scrapy,CodeJuan/scrapy,songfj/scrapy,bmess/scrapy,rolando-contrib/scrapy,1yvT0s/scrapy,github-account-because-they-want-it/scrapy,CENDARI/scrapy,hwsyy/scrapy,heamon7/scrapy,olafdietsche/scrapy,nfunato/scrapy,Slater-Victoroff/scrapy,codebhendi/scrapy,Geeglee/scrapy,yusofm/scrapy,nowopen/scrapy,eliasdorneles/scrapy,OpenWhere/scrapy,wenyu1001/scrapy,Djlavoy/scrapy,olafdietsche/scrapy,nikgr95/scrapy,legendtkl/scrapy,kmike/scrapy,foromer4/scrapy,dacjames/scrapy,pfctdayelise/scrapy,fafaman/scrapy,wangjun/scrapy,csalazar/scrapy,songfj/scrapy,rolando/scrapy,rdowinton/scrapy,Bourneer/scrapy,ArturGaspar/scrapy,nowopen/scrapy,OpenWhere/scrapy,moraesnicol/scrapy,KublaikhanGeek/scrapy,hansenDise/scrapy,taito/scrapy,pfctdayelise/scrapy,nowopen/scrapy,rdowinton/scrapy,profjrr/scrapy,zackslash/scrapy,curita/scrapy,pranjalpatil/scrapy,farhan0581/scrapy,starrify/scrapy,Timeship/scrapy,cyrixhero/scrapy,umrashrf/scrapy,ENjOyAbLE1991/scrapy,cyberplant/scrapy,cyberplant/scrapy,csalazar/scrapy,famorted/scrapy,kazitanvirahsan/scrapy,rklabs/scrapy,dgillis/scrapy,tliber/scrapy,raphaelfruneaux/scrapy,rootAvish/scrapy,huoxudong125/scrapy,darkrho/scrapy-scrapy,eLRuLL/scrapy,jeffreyjinfeng/scrapy,curita/scrapy,dracony/scrapy,URXtech/scrapy,hbwzhsh/scrapy,finfish/scrapy,agreen/scrapy,ylcolala/scrapy,Djlavoy/scrapy,rahulsharma1991/scrapy,hyrole/scrapy,bmess/scrapy,pablohoffman/scrapy,Timeship/scrapy,jiezhu2007/scrapy,agusc/scrapy,eLRuLL/scrapy,smaty1/scrapy,moraesnicol/scrapy,Parlin-Galanodel/scrapy,kashyap32/scrapy,elijah513/scrapy,mgedmin/scrapy,pombredanne/scrapy,kalessin/scrapy,ENjOyAbLE1991/scrapy,Partoo/scrapy,Timeship/scrapy,rahulsharma1991/scrapy,yusofm/scrapy,shaform/scrapy,lacrazyboy/scrapy,webmakin/scrapy,amboxer21/scrapy,IvanGavran/scrapy,heamon7/scrapy,legendtkl/scrapy,godfreyy/scrapy,xiao26/scrapy,kmike/scrapy,Geeglee/scrapy,mlyundin/scrapy,ssteo/scrapy,Ryezhang/scrapy,lacrazyboy/scrapy,kimimj/scrapy,dracony/scrapy,dangra/scrapy,tagatac/scrapy,amboxer21/scrapy,Zephor5/scrapy,zackslash/scrapy,shaform/scrapy,Lucifer-Kim/scrapy,umrashrf/scrapy,Slater-Victoroff/scrapy,farhan0581/scrapy,raphaelfruneaux/scrapy,snowdream1314/scrapy,wangjun/scrapy,heamon7/scrapy,fqul/scrapy,zhangtao11/scrapy,irwinlove/scrapy,jiezhu2007/scrapy,hwsyy/scrapy,YeelerG/scrapy,fpy171/scrapy,fontenele/scrapy,elacuesta/scrapy,famorted/scrapy,kalessin/scrapy,amboxer21/scrapy,yarikoptic/scrapy,Parlin-Galanodel/scrapy,coderabhishek/scrapy,Ryezhang/scrapy,Bourneer/scrapy,JacobStevenR/scrapy,starrify/scrapy,darkrho/scrapy-scrapy,AaronTao1990/scrapy,hectoruelo/scrapy,mgedmin/scrapy,starrify/scrapy,redapple/scrapy,jdemaeyer/scrapy,farhan0581/scrapy,raphaelfruneaux/scrapy,zhangtao11/scrapy,wenyu1001/scrapy,scorphus/scrapy,CodeJuan/scrapy,snowdream1314/scrapy,AaronTao1990/scrapy,redapple/scrapy,Cnfc19932/scrapy,wzyuliyang/scrapy,godfreyy/scrapy,huoxudong125/scrapy,Digenis/scrapy,Adai0808/scrapy-1,avtoritet/scrapy,pombredanne/scrapy,stenskjaer/scrapy,tliber/scrapy,livepy/scrapy,KublaikhanGeek/scrapy,kimimj/scrapy,YeelerG/scrapy,agusc/scrapy,mlyundin/scrapy,CENDARI/scrapy,famorted/scrapy,pranjalpatil/scrapy,github-account-because-they-want-it/scrapy,carlosp420/scrapy,avtoritet/scrapy,github-account-because-they-want-it/scrapy,wujuguang/scrapy,Digenis/scrapy,hansenDise/scrapy,fqul/scrapy,webmakin/scrapy,nikgr95/scrapy,tntC4stl3/scrapy,eliasdorneles/scrapy,tagatac/scrapy,liyy7/scrapy,xiao26/scrapy,jc0n/scrapy,elacuesta/scrapy,URXtech/scrapy,Bourneer/scrapy,csalazar/scrapy,GregoryVigoTorres/scrapy,YeelerG/scrapy,AaronTao1990/scrapy,nfunato/scrapy,fqul/scrapy,rklabs/scrapy,finfish/scrapy,xiao26/scrapy,CENDARI/scrapy,fpy171/scrapy,dgillis/scrapy,agreen/scrapy,1yvT0s/scrapy,tliber/scrapy,fafaman/scrapy,codebhendi/scrapy,barraponto/scrapy,jeffreyjinfeng/scrapy,1yvT0s/scrapy,rolando/scrapy,JacobStevenR/scrapy,webmakin/scrapy,Chenmxs/scrapy,kimimj/scrapy,shaform/scrapy,arush0311/scrapy,pablohoffman/scrapy,Preetwinder/scrapy,pawelmhm/scrapy,ramiro/scrapy,cursesun/scrapy,TarasRudnyk/scrapy,mlyundin/scrapy,smaty1/scrapy,wenyu1001/scrapy,GregoryVigoTorres/scrapy,wujuguang/scrapy,Allianzcortex/scrapy,tntC4stl3/scrapy,yarikoptic/scrapy,Zephor5/scrapy,aivarsk/scrapy,scorphus/scrapy,jiezhu2007/scrapy,rdowinton/scrapy,pombredanne/scrapy,jeffreyjinfeng/scrapy,hectoruelo/scrapy,yidongliu/scrapy,scorphus/scrapy,irwinlove/scrapy,profjrr/scrapy,coderabhishek/scrapy,Partoo/scrapy,dangra/scrapy,fontenele/scrapy,finfish/scrapy,ylcolala/scrapy,rahulsharma1991/scrapy,cyberplant/scrapy,haiiiiiyun/scrapy,songfj/scrapy,Cnfc19932/scrapy,profjrr/scrapy,ArturGaspar/scrapy,hbwzhsh/scrapy,cursesun/scrapy,carlosp420/scrapy,z-fork/scrapy,arush0311/scrapy,hwsyy/scrapy,aivarsk/scrapy,crasker/scrapy,WilliamKinaan/scrapy,scrapy/scrapy,ENjOyAbLE1991/scrapy,Allianzcortex/scrapy,cyrixhero/scrapy,ssh-odoo/scrapy,zjuwangg/scrapy,zackslash/scrapy,yidongliu/scrapy,hansenDise/scrapy,pawelmhm/scrapy,moraesnicol/scrapy,zjuwangg/scrapy,Chenmxs/scrapy,ramiro/scrapy,nikgr95/scrapy,Adai0808/scrapy-1,rootAvish/scrapy,wzyuliyang/scrapy,IvanGavran/scrapy,nfunato/scrapy,irwinlove/scrapy,fafaman/scrapy,w495/scrapy,olorz/scrapy,CodeJuan/scrapy,zorojean/scrapy,Ryezhang/scrapy,dracony/scrapy,GregoryVigoTorres/scrapy,cyrixhero/scrapy,kazitanvirahsan/scrapy,kalessin/scrapy,Lucifer-Kim/scrapy,pawelmhm/scrapy,ssh-odoo/scrapy,rolando-contrib/scrapy,aivarsk/scrapy,Geeglee/scrapy,legendtkl/scrapy,Slater-Victoroff/scrapy,Djlavoy/scrapy,rootAvish/scrapy,umrashrf/scrapy,redapple/scrapy,tntC4stl3/scrapy