ncd: tests: Add Block test.
ncd: tests: Add Block test.

linfengfeiye/badvpn,tempbottle/badvpn,binondord/badvpn,linfengfeiye/badvpn,tempbottle/badvpn,PowerOlive/badvpn,linfengfeiye/badvpn,Git-Host/badvpn,binondord/badvpn,Git-Host/badvpn,PowerOlive/badvpn,binondord/badvpn,tempbottle/badvpn,binondord/badvpn,LazyZhu/badvpn,Git-Host/badvpn,linfengfeiye/badvpn,PowerOlive/badvpn,Git-Host/badvpn,Git-Host/badvpn,binondord/badvpn,PowerOlive/badvpn,tempbottle/badvpn,LazyZhu/badvpn,tempbottle/badvpn,PowerOlive/badvpn,LazyZhu/badvpn,LazyZhu/badvpn,linfengfeiye/badvpn,LazyZhu/badvpn