Add testcase for sequence unpacking.
Add testcase for sequence unpacking.

martinribelotta/micropython,mpalomer/micropython,HenrikSolver/micropython,firstval/micropython,cwyark/micropython,xhat/micropython,trezor/micropython,blmorris/micropython,vitiral/micropython,xyb/micropython,chrisdearman/micropython,ahotam/micropython,pramasoul/micropython,ganshun666/micropython,MrSurly/micropython-esp32,lowRISC/micropython,tralamazza/micropython,skybird6672/micropython,xuxiaoxin/micropython,noahchense/micropython,tdautc19841202/micropython,Timmenem/micropython,omtinez/micropython,alex-robbins/micropython,firstval/micropython,tobbad/micropython,micropython/micropython-esp32,tdautc19841202/micropython,adafruit/circuitpython,kerneltask/micropython,TDAbboud/micropython,skybird6672/micropython,methoxid/micropystat,ceramos/micropython,supergis/micropython,ryannathans/micropython,mpalomer/micropython,tobbad/micropython,warner83/micropython,aitjcize/micropython,ChuckM/micropython,Peetz0r/micropython-esp32,swegener/micropython,praemdonck/micropython,warner83/micropython,MrSurly/micropython,firstval/micropython,mhoffma/micropython,aethaniel/micropython,xuxiaoxin/micropython,infinnovation/micropython,PappaPeppar/micropython,supergis/micropython,alex-march/micropython,vriera/micropython,suda/micropython,orionrobots/micropython,pramasoul/micropython,tobbad/micropython,oopy/micropython,KISSMonX/micropython,martinribelotta/micropython,kostyll/micropython,ChuckM/micropython,cnoviello/micropython,vitiral/micropython,EcmaXp/micropython,lowRISC/micropython,dinau/micropython,orionrobots/micropython,pozetroninc/micropython,xyb/micropython,oopy/micropython,mpalomer/micropython,infinnovation/micropython,mgyenik/micropython,vriera/micropython,dhylands/micropython,EcmaXp/micropython,chrisdearman/micropython,torwag/micropython,bvernoux/micropython,galenhz/micropython,swegener/micropython,misterdanb/micropython,bvernoux/micropython,heisewangluo/micropython,slzatz/micropython,mpalomer/micropython,stonegithubs/micropython,swegener/micropython,adafruit/micropython,cloudformdesign/micropython,drrk/micropython,redbear/micropython,ernesto-g/micropython,ericsnowcurrently/micropython,alex-robbins/micropython,hosaka/micropython,adamkh/micropython,neilh10/micropython,PappaPeppar/micropython,jmarcelino/pycom-micropython,SHA2017-badge/micropython-esp32,danicampora/micropython,AriZuu/micropython,alex-march/micropython,ruffy91/micropython,puuu/micropython,emfcamp/micropython,danicampora/micropython,hiway/micropython,noahwilliamsson/micropython,aitjcize/micropython,supergis/micropython,mianos/micropython,mgyenik/micropython,xuxiaoxin/micropython,chrisdearman/micropython,MrSurly/micropython,kerneltask/micropython,alex-robbins/micropython,turbinenreiter/micropython,oopy/micropython,jimkmc/micropython,ruffy91/micropython,blazewicz/micropython,mhoffma/micropython,SHA2017-badge/micropython-esp32,blazewicz/micropython,jmarcelino/pycom-micropython,mgyenik/micropython,noahchense/micropython,cloudformdesign/micropython,toolmacher/micropython,dhylands/micropython,selste/micropython,adafruit/micropython,hiway/micropython,jlillest/micropython,mgyenik/micropython,EcmaXp/micropython,vriera/micropython,ernesto-g/micropython,Peetz0r/micropython-esp32,selste/micropython,selste/micropython,MrSurly/micropython-esp32,alex-robbins/micropython,xyb/micropython,cnoviello/micropython,ryannathans/micropython,ericsnowcurrently/micropython,ahotam/micropython,trezor/micropython,ryannathans/micropython,noahwilliamsson/micropython,dxxb/micropython,swegener/micropython,puuu/micropython,emfcamp/micropython,redbear/micropython,MrSurly/micropython-esp32,micropython/micropython-esp32,aethaniel/micropython,orionrobots/micropython,slzatz/micropython,drrk/micropython,tralamazza/micropython,neilh10/micropython,skybird6672/micropython,jmarcelino/pycom-micropython,firstval/micropython,matthewelse/micropython,Vogtinator/micropython,kostyll/micropython,lowRISC/micropython,noahchense/micropython,pfalcon/micropython,swegener/micropython,torwag/micropython,ernesto-g/micropython,dinau/micropython,danicampora/micropython,ahotam/micropython,adafruit/circuitpython,warner83/micropython,utopiaprince/micropython,praemdonck/micropython,torwag/micropython,PappaPeppar/micropython,HenrikSolver/micropython,tuc-osg/micropython,xuxiaoxin/micropython,dhylands/micropython,henriknelson/micropython,henriknelson/micropython,misterdanb/micropython,firstval/micropython,martinribelotta/micropython,supergis/micropython,ericsnowcurrently/micropython,henriknelson/micropython,AriZuu/micropython,ganshun666/micropython,ruffy91/micropython,adamkh/micropython,torwag/micropython,mhoffma/micropython,pozetroninc/micropython,xhat/micropython,SungEun-Steve-Kim/test-mp,tralamazza/micropython,skybird6672/micropython,tobbad/micropython,ernesto-g/micropython,turbinenreiter/micropython,aethaniel/micropython,pramasoul/micropython,misterdanb/micropython,adamkh/micropython,adafruit/circuitpython,jlillest/micropython,MrSurly/micropython-esp32,HenrikSolver/micropython,KISSMonX/micropython,pozetroninc/micropython,HenrikSolver/micropython,suda/micropython,ruffy91/micropython,dxxb/micropython,toolmacher/micropython,paul-xxx/micropython,rubencabrera/micropython,omtinez/micropython,KISSMonX/micropython,mianos/micropython,utopiaprince/micropython,cloudformdesign/micropython,tdautc19841202/micropython,adamkh/micropython,misterdanb/micropython,dmazzella/micropython,matthewelse/micropython,omtinez/micropython,jlillest/micropython,cnoviello/micropython,chrisdearman/micropython,dxxb/micropython,mgyenik/micropython,kerneltask/micropython,adafruit/micropython,omtinez/micropython,TDAbboud/micropython,matthewelse/micropython,rubencabrera/micropython,lbattraw/micropython,puuu/micropython,heisewangluo/micropython,hosaka/micropython,cwyark/micropython,Peetz0r/micropython-esp32,kerneltask/micropython,SHA2017-badge/micropython-esp32,Vogtinator/micropython,ceramos/micropython,ganshun666/micropython,feilongfl/micropython,dinau/micropython,jimkmc/micropython,Vogtinator/micropython,micropython/micropython-esp32,ernesto-g/micropython,tralamazza/micropython,xyb/micropython,methoxid/micropystat,lbattraw/micropython,MrSurly/micropython,rubencabrera/micropython,xuxiaoxin/micropython,toolmacher/micropython,lowRISC/micropython,pfalcon/micropython,dxxb/micropython,galenhz/micropython,turbinenreiter/micropython,tuc-osg/micropython,heisewangluo/micropython,jimkmc/micropython,heisewangluo/micropython,bvernoux/micropython,utopiaprince/micropython,henriknelson/micropython,cnoviello/micropython,cwyark/micropython,paul-xxx/micropython,redbear/micropython,redbear/micropython,praemdonck/micropython,tdautc19841202/micropython,blmorris/micropython,hiway/micropython,torwag/micropython,tobbad/micropython,matthewelse/micropython,selste/micropython,praemdonck/micropython,methoxid/micropystat,suda/micropython,jmarcelino/pycom-micropython,emfcamp/micropython,cwyark/micropython,tuc-osg/micropython,dmazzella/micropython,tdautc19841202/micropython,rubencabrera/micropython,dmazzella/micropython,TDAbboud/micropython,drrk/micropython,martinribelotta/micropython,turbinenreiter/micropython,bvernoux/micropython,ahotam/micropython,deshipu/micropython,pfalcon/micropython,SungEun-Steve-Kim/test-mp,infinnovation/micropython,jimkmc/micropython,mianos/micropython,noahwilliamsson/micropython,ryannathans/micropython,martinribelotta/micropython,suda/micropython,lowRISC/micropython,ericsnowcurrently/micropython,misterdanb/micropython,tuc-osg/micropython,noahchense/micropython,emfcamp/micropython,noahwilliamsson/micropython,vriera/micropython,kostyll/micropython,deshipu/micropython,vitiral/micropython,aethaniel/micropython,selste/micropython,hiway/micropython,paul-xxx/micropython,vitiral/micropython,ganshun666/micropython,feilongfl/micropython,stonegithubs/micropython,chrisdearman/micropython,jimkmc/micropython,SungEun-Steve-Kim/test-mp,Timmenem/micropython,stonegithubs/micropython,kostyll/micropython,heisewangluo/micropython,praemdonck/micropython,feilongfl/micropython,methoxid/micropystat,jlillest/micropython,xhat/micropython,adafruit/micropython,kostyll/micropython,adafruit/micropython,trezor/micropython,TDAbboud/micropython,hosaka/micropython,xhat/micropython,oopy/micropython,adafruit/circuitpython,pramasoul/micropython,pramasoul/micropython,deshipu/micropython,blmorris/micropython,ericsnowcurrently/micropython,stonegithubs/micropython,danicampora/micropython,hiway/micropython,jmarcelino/pycom-micropython,Vogtinator/micropython,dxxb/micropython,xyb/micropython,PappaPeppar/micropython,neilh10/micropython,alex-march/micropython,blazewicz/micropython,alex-march/micropython,dhylands/micropython,bvernoux/micropython,lbattraw/micropython,skybird6672/micropython,hosaka/micropython,Timmenem/micropython,cloudformdesign/micropython,pozetroninc/micropython,oopy/micropython,warner83/micropython,ryannathans/micropython,matthewelse/micropython,drrk/micropython,Peetz0r/micropython-esp32,Vogtinator/micropython,neilh10/micropython,utopiaprince/micropython,ganshun666/micropython,SHA2017-badge/micropython-esp32,TDAbboud/micropython,dinau/micropython,alex-march/micropython,noahchense/micropython,aitjcize/micropython,drrk/micropython,dmazzella/micropython,PappaPeppar/micropython,toolmacher/micropython,mianos/micropython,ceramos/micropython,utopiaprince/micropython,pozetroninc/micropython,mhoffma/micropython,rubencabrera/micropython,deshipu/micropython,blazewicz/micropython,slzatz/micropython,infinnovation/micropython,Peetz0r/micropython-esp32,AriZuu/micropython,AriZuu/micropython,pfalcon/micropython,puuu/micropython,stonegithubs/micropython,paul-xxx/micropython,dinau/micropython,ChuckM/micropython,Timmenem/micropython,vriera/micropython,toolmacher/micropython,adamkh/micropython,kerneltask/micropython,xhat/micropython,mpalomer/micropython,MrSurly/micropython,aitjcize/micropython,redbear/micropython,vitiral/micropython,Timmenem/micropython,danicampora/micropython,lbattraw/micropython,galenhz/micropython,ChuckM/micropython,blazewicz/micropython,supergis/micropython,SungEun-Steve-Kim/test-mp,turbinenreiter/micropython,SungEun-Steve-Kim/test-mp,methoxid/micropystat,MrSurly/micropython-esp32,puuu/micropython,adafruit/circuitpython,ruffy91/micropython,micropython/micropython-esp32,warner83/micropython,cwyark/micropython,blmorris/micropython,noahwilliamsson/micropython,suda/micropython,galenhz/micropython,tuc-osg/micropython,KISSMonX/micropython,blmorris/micropython,aethaniel/micropython,feilongfl/micropython,ahotam/micropython,slzatz/micropython,ChuckM/micropython,matthewelse/micropython,ceramos/micropython,HenrikSolver/micropython,infinnovation/micropython,adafruit/circuitpython,SHA2017-badge/micropython-esp32,omtinez/micropython,neilh10/micropython,emfcamp/micropython,mhoffma/micropython,trezor/micropython,orionrobots/micropython,hosaka/micropython,paul-xxx/micropython,galenhz/micropython,cnoviello/micropython,feilongfl/micropython,deshipu/micropython,mianos/micropython,dhylands/micropython,cloudformdesign/micropython,EcmaXp/micropython,orionrobots/micropython,trezor/micropython,pfalcon/micropython,slzatz/micropython,henriknelson/micropython,alex-robbins/micropython,micropython/micropython-esp32,MrSurly/micropython,jlillest/micropython,KISSMonX/micropython,ceramos/micropython,EcmaXp/micropython,AriZuu/micropython,lbattraw/micropython