Add more tests for Interval constructor
Add more tests for Interval constructor

Signed-off-by: Ondrej Certik <b816faa87b7d35274d2e545c5be11ed4376f3ccf@certik.cz>

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