[zonecheck-tests] Weirdness in Zonecheck 3.0.2

[Stan Barber]

Just started to use Zonecheck 3.0.2 with dnsruby 1.47 on FreeBSD 7.3 and am getting some interesting errors.

nameserver IP reverse matching nameserver name

[TEST nameserver IP reverse matching nameserver name]: undefined method `empty?' for nil:NilClass

The reverse is defined for this server and it respond just fine to dig.

nameserver IP reverse

[TEST nameserver IP reverse]: killed thread

Why would I get a "killed thread"?

root-servers list present

[TEST root-servers list present]: answer refused from server: (NS )

DNS-OARC suggests in https://www.dns-oarc.net/oarc/articles/upward-referrals-considered-harmful that REFUSED is a reasonable response.

NS can be resolved

[TEST NS can be resolved]: undefined method `empty?' for nil:NilClass

Again the "undefined method" error. Is this a bug in zonecheck or dnsruby or what?