added tests
added tests

saurabhjn76/sympy,MridulS/sympy,hrashk/sympy,vipulroxx/sympy,vipulroxx/sympy,shipci/sympy,Sumith1896/sympy,garvitr/sympy,Curious72/sympy,iamutkarshtiwari/sympy,hrashk/sympy,yashsharan/sympy,mafiya69/sympy,bukzor/sympy,Davidjohnwilson/sympy,dqnykamp/sympy,wanglongqi/sympy,ga7g08/sympy,Gadal/sympy,dqnykamp/sympy,VaibhavAgarwalVA/sympy,diofant/diofant,kmacinnis/sympy,AkademieOlympia/sympy,ga7g08/sympy,Titan-C/sympy,postvakje/sympy,jaimahajan1997/sympy,Sumith1896/sympy,lidavidm/sympy,Mitchkoens/sympy,sampadsaha5/sympy,kaushik94/sympy,rahuldan/sympy,sahmed95/sympy,ahhda/sympy,pandeyadarsh/sympy,moble/sympy,Gadal/sympy,chaffra/sympy,oliverlee/sympy,drufat/sympy,abhiii5459/sympy,sunny94/temp,kumarkrishna/sympy,beni55/sympy,grevutiu-gabriel/sympy,toolforger/sympy,hargup/sympy,debugger22/sympy,moble/sympy,aktech/sympy,sunny94/temp,meghana1995/sympy,liangjiaxing/sympy,saurabhjn76/sympy,meghana1995/sympy,Designist/sympy,MridulS/sympy,Davidjohnwilson/sympy,lindsayad/sympy,cswiercz/sympy,yashsharan/sympy,hrashk/sympy,kumarkrishna/sympy,kaichogami/sympy,abloomston/sympy,liangjiaxing/sympy,VaibhavAgarwalVA/sympy,souravsingh/sympy,sahilshekhawat/sympy,hargup/sympy,kmacinnis/sympy,postvakje/sympy,jbbskinny/sympy,moble/sympy,ahhda/sympy,shipci/sympy,kaichogami/sympy,chaffra/sympy,grevutiu-gabriel/sympy,garvitr/sympy,hargup/sympy,abloomston/sympy,drufat/sympy,jaimahajan1997/sympy,kumarkrishna/sympy,saurabhjn76/sympy,mcdaniel67/sympy,jerli/sympy,MechCoder/sympy,jamesblunt/sympy,beni55/sympy,shikil/sympy,maniteja123/sympy,ChristinaZografou/sympy,Curious72/sympy,Davidjohnwilson/sympy,yukoba/sympy,chaffra/sympy,abhiii5459/sympy,Vishluck/sympy,debugger22/sympy,beni55/sympy,abhiii5459/sympy,sahilshekhawat/sympy,jaimahajan1997/sympy,Arafatk/sympy,bukzor/sympy,lindsayad/sympy,kevalds51/sympy,Vishluck/sympy,atreyv/sympy,pandeyadarsh/sympy,asm666/sympy,pbrady/sympy,meghana1995/sympy,yashsharan/sympy,AkademieOlympia/sympy,cccfran/sympy,kaushik94/sympy,atsao72/sympy,Sumith1896/sympy,madan96/sympy,skidzo/sympy,asm666/sympy,kevalds51/sympy,yukoba/sympy,sahmed95/sympy,pandeyadarsh/sympy,VaibhavAgarwalVA/sympy,yukoba/sympy,kaushik94/sympy,ga7g08/sympy,debugger22/sympy,madan96/sympy,sunny94/temp,emon10005/sympy,shikil/sympy,skirpichev/omg,sampadsaha5/sympy,Designist/sympy,vipulroxx/sympy,kaichogami/sympy,MechCoder/sympy,abloomston/sympy,wanglongqi/sympy,wanglongqi/sympy,asm666/sympy,Mitchkoens/sympy,mcdaniel67/sympy,shipci/sympy,Shaswat27/sympy,jamesblunt/sympy,wyom/sympy,wyom/sympy,maniteja123/sympy,postvakje/sympy,ChristinaZografou/sympy,aktech/sympy,AunShiLord/sympy,AkademieOlympia/sympy,madan96/sympy,Titan-C/sympy,lidavidm/sympy,cccfran/sympy,toolforger/sympy,rahuldan/sympy,ahhda/sympy,Gadal/sympy,drufat/sympy,lidavidm/sympy,ChristinaZografou/sympy,lindsayad/sympy,jamesblunt/sympy,pbrady/sympy,Mitchkoens/sympy,AunShiLord/sympy,sahmed95/sympy,Arafatk/sympy,atsao72/sympy,souravsingh/sympy,mafiya69/sympy,grevutiu-gabriel/sympy,jbbskinny/sympy,atreyv/sympy,skidzo/sympy,dqnykamp/sympy,iamutkarshtiwari/sympy,Vishluck/sympy,oliverlee/sympy,emon10005/sympy,MechCoder/sympy,bukzor/sympy,Shaswat27/sympy,sampadsaha5/sympy,MridulS/sympy,cswiercz/sympy,mcdaniel67/sympy,Arafatk/sympy,maniteja123/sympy,atsao72/sympy,farhaanbukhsh/sympy,Titan-C/sympy,pbrady/sympy,garvitr/sympy,aktech/sympy,kmacinnis/sympy,rahuldan/sympy,emon10005/sympy,jerli/sympy,jbbskinny/sympy,oliverlee/sympy,farhaanbukhsh/sympy,iamutkarshtiwari/sympy,wyom/sympy,atreyv/sympy,AunShiLord/sympy,jerli/sympy,Shaswat27/sympy,mafiya69/sympy,skidzo/sympy,toolforger/sympy,cswiercz/sympy,liangjiaxing/sympy,Curious72/sympy,kevalds51/sympy,sahilshekhawat/sympy,cccfran/sympy,shikil/sympy,farhaanbukhsh/sympy,Designist/sympy,souravsingh/sympy