[integrals] Improve a test for meijerint.
[integrals] Improve a test for meijerint.

This is so that issue 1839 can be closed.

amitjamadagni/sympy,wanglongqi/sympy,Mitchkoens/sympy,liangjiaxing/sympy,pbrady/sympy,postvakje/sympy,ga7g08/sympy,toolforger/sympy,mcdaniel67/sympy,jbbskinny/sympy,skidzo/sympy,kevalds51/sympy,wyom/sympy,AunShiLord/sympy,rahuldan/sympy,yashsharan/sympy,Arafatk/sympy,ChristinaZografou/sympy,kevalds51/sympy,shipci/sympy,Gadal/sympy,VaibhavAgarwalVA/sympy,sampadsaha5/sympy,shipci/sympy,asm666/sympy,cccfran/sympy,ahhda/sympy,oliverlee/sympy,jbbskinny/sympy,saurabhjn76/sympy,ahhda/sympy,garvitr/sympy,abloomston/sympy,kaichogami/sympy,lidavidm/sympy,amitjamadagni/sympy,souravsingh/sympy,lindsayad/sympy,Curious72/sympy,pbrady/sympy,emon10005/sympy,sunny94/temp,hrashk/sympy,wyom/sympy,pandeyadarsh/sympy,MechCoder/sympy,VaibhavAgarwalVA/sympy,AunShiLord/sympy,kmacinnis/sympy,drufat/sympy,Designist/sympy,flacjacket/sympy,Davidjohnwilson/sympy,jamesblunt/sympy,cswiercz/sympy,wyom/sympy,jerli/sympy,kmacinnis/sympy,Curious72/sympy,cswiercz/sympy,aktech/sympy,kevalds51/sympy,sahmed95/sympy,bukzor/sympy,liangjiaxing/sympy,shipci/sympy,iamutkarshtiwari/sympy,rahuldan/sympy,sampadsaha5/sympy,MridulS/sympy,grevutiu-gabriel/sympy,sampadsaha5/sympy,farhaanbukhsh/sympy,shikil/sympy,skidzo/sympy,mafiya69/sympy,AkademieOlympia/sympy,hargup/sympy,AkademieOlympia/sympy,toolforger/sympy,iamutkarshtiwari/sympy,cccfran/sympy,Titan-C/sympy,AkademieOlympia/sympy,farhaanbukhsh/sympy,moble/sympy,yukoba/sympy,atsao72/sympy,lindsayad/sympy,vipulroxx/sympy,madan96/sympy,sahmed95/sympy,farhaanbukhsh/sympy,meghana1995/sympy,wanglongqi/sympy,Designist/sympy,Arafatk/sympy,lindsayad/sympy,debugger22/sympy,Shaswat27/sympy,kaichogami/sympy,kmacinnis/sympy,dqnykamp/sympy,oliverlee/sympy,kaushik94/sympy,postvakje/sympy,VaibhavAgarwalVA/sympy,ahhda/sympy,ga7g08/sympy,diofant/diofant,liangjiaxing/sympy,beni55/sympy,kaichogami/sympy,hrashk/sympy,abhiii5459/sympy,ChristinaZografou/sympy,shikil/sympy,emon10005/sympy,Davidjohnwilson/sympy,drufat/sympy,jaimahajan1997/sympy,kumarkrishna/sympy,aktech/sympy,wanglongqi/sympy,pandeyadarsh/sympy,moble/sympy,Mitchkoens/sympy,debugger22/sympy,Designist/sympy,AunShiLord/sympy,kaushik94/sympy,ChristinaZografou/sympy,jerli/sympy,moble/sympy,asm666/sympy,mcdaniel67/sympy,srjoglekar246/sympy,madan96/sympy,kumarkrishna/sympy,chaffra/sympy,yashsharan/sympy,hargup/sympy,atsao72/sympy,maniteja123/sympy,abloomston/sympy,aktech/sympy,beni55/sympy,meghana1995/sympy,Vishluck/sympy,maniteja123/sympy,MechCoder/sympy,Shaswat27/sympy,atsao72/sympy,vipulroxx/sympy,saurabhjn76/sympy,Sumith1896/sympy,jerli/sympy,sunny94/temp,dqnykamp/sympy,toolforger/sympy,jamesblunt/sympy,maniteja123/sympy,drufat/sympy,Sumith1896/sympy,yukoba/sympy,sahmed95/sympy,iamutkarshtiwari/sympy,jamesblunt/sympy,kaushik94/sympy,ga7g08/sympy,Shaswat27/sympy,Curious72/sympy,cccfran/sympy,MechCoder/sympy,bukzor/sympy,Titan-C/sympy,grevutiu-gabriel/sympy,yashsharan/sympy,Gadal/sympy,skirpichev/omg,Titan-C/sympy,Sumith1896/sympy,chaffra/sympy,dqnykamp/sympy,rahuldan/sympy,Mitchkoens/sympy,shikil/sympy,yukoba/sympy,debugger22/sympy,jaimahajan1997/sympy,MridulS/sympy,garvitr/sympy,pbrady/sympy,abloomston/sympy,lidavidm/sympy,oliverlee/sympy,atreyv/sympy,lidavidm/sympy,MridulS/sympy,atreyv/sympy,mcdaniel67/sympy,postvakje/sympy,Vishluck/sympy,kumarkrishna/sympy,vipulroxx/sympy,abhiii5459/sympy,pandeyadarsh/sympy,chaffra/sympy,jaimahajan1997/sympy,souravsingh/sympy,souravsingh/sympy,mafiya69/sympy,meghana1995/sympy,jbbskinny/sympy,Davidjohnwilson/sympy,cswiercz/sympy,skidzo/sympy,asm666/sympy,beni55/sympy,sunny94/temp,abhiii5459/sympy,Vishluck/sympy,Arafatk/sympy,emon10005/sympy,saurabhjn76/sympy,atreyv/sympy,sahilshekhawat/sympy,madan96/sympy,sahilshekhawat/sympy,Gadal/sympy,garvitr/sympy,bukzor/sympy,grevutiu-gabriel/sympy,hrashk/sympy,hargup/sympy,sahilshekhawat/sympy,mafiya69/sympy