Add test for EmptySet() in linsolve
Add test for EmptySet() in linsolve

atreyv/sympy,cswiercz/sympy,Davidjohnwilson/sympy,kevalds51/sympy,moble/sympy,Shaswat27/sympy,grevutiu-gabriel/sympy,MechCoder/sympy,pandeyadarsh/sympy,jbbskinny/sympy,skidzo/sympy,VaibhavAgarwalVA/sympy,Shaswat27/sympy,VaibhavAgarwalVA/sympy,wanglongqi/sympy,shikil/sympy,abhiii5459/sympy,jbbskinny/sympy,rahuldan/sympy,wyom/sympy,bukzor/sympy,sampadsaha5/sympy,jbbskinny/sympy,Arafatk/sympy,lindsayad/sympy,MechCoder/sympy,kaushik94/sympy,pandeyadarsh/sympy,oliverlee/sympy,ahhda/sympy,lindsayad/sympy,wyom/sympy,chaffra/sympy,MechCoder/sympy,drufat/sympy,lindsayad/sympy,Designist/sympy,mcdaniel67/sympy,yukoba/sympy,kevalds51/sympy,mcdaniel67/sympy,Vishluck/sympy,debugger22/sympy,mcdaniel67/sympy,Arafatk/sympy,emon10005/sympy,mafiya69/sympy,grevutiu-gabriel/sympy,yashsharan/sympy,ga7g08/sympy,iamutkarshtiwari/sympy,Titan-C/sympy,AkademieOlympia/sympy,drufat/sympy,pandeyadarsh/sympy,postvakje/sympy,mafiya69/sympy,ahhda/sympy,kaushik94/sympy,postvakje/sympy,oliverlee/sympy,jerli/sympy,sampadsaha5/sympy,ga7g08/sympy,Shaswat27/sympy,ChristinaZografou/sympy,jerli/sympy,wyom/sympy,moble/sympy,wanglongqi/sympy,yashsharan/sympy,moble/sympy,maniteja123/sympy,chaffra/sympy,saurabhjn76/sympy,sahmed95/sympy,aktech/sympy,AkademieOlympia/sympy,rahuldan/sympy,AkademieOlympia/sympy,hargup/sympy,abhiii5459/sympy,souravsingh/sympy,kevalds51/sympy,ga7g08/sympy,abhiii5459/sympy,kumarkrishna/sympy,yukoba/sympy,cswiercz/sympy,aktech/sympy,Davidjohnwilson/sympy,oliverlee/sympy,Titan-C/sympy,rahuldan/sympy,yukoba/sympy,ahhda/sympy,VaibhavAgarwalVA/sympy,sampadsaha5/sympy,sahmed95/sympy,kaichogami/sympy,shikil/sympy,postvakje/sympy,Davidjohnwilson/sympy,skidzo/sympy,maniteja123/sympy,farhaanbukhsh/sympy,iamutkarshtiwari/sympy,bukzor/sympy,grevutiu-gabriel/sympy,Designist/sympy,kumarkrishna/sympy,madan96/sympy,drufat/sympy,Vishluck/sympy,saurabhjn76/sympy,jerli/sympy,farhaanbukhsh/sympy,wanglongqi/sympy,Arafatk/sympy,jaimahajan1997/sympy,madan96/sympy,madan96/sympy,Vishluck/sympy,mafiya69/sympy,chaffra/sympy,Curious72/sympy,souravsingh/sympy,debugger22/sympy,shikil/sympy,hargup/sympy,souravsingh/sympy,saurabhjn76/sympy,emon10005/sympy,ChristinaZografou/sympy,iamutkarshtiwari/sympy,ChristinaZografou/sympy,sahmed95/sympy,jaimahajan1997/sympy,kumarkrishna/sympy,Titan-C/sympy,atreyv/sympy,kaichogami/sympy,yashsharan/sympy,farhaanbukhsh/sympy,aktech/sympy,debugger22/sympy,maniteja123/sympy,hargup/sympy,Designist/sympy,jaimahajan1997/sympy,Curious72/sympy,kaushik94/sympy,Curious72/sympy,skidzo/sympy,cswiercz/sympy,kaichogami/sympy,atreyv/sympy,bukzor/sympy,emon10005/sympy