The test suite defines the full resolver contract using live DNS
queries against controlled records in the sneak.cloud zone
(Cloudflare). Covers FindAuthoritativeNameservers, QueryNameserver,
QueryAllNameservers, LookupNS, and ResolveIPAddresses, including
sorting/determinism guarantees, trailing-dot handling, per-NS
response status model, lame-delegation detection, NXDOMAIN
semantics, CNAME following, and context cancellation.
Also adds DNSSEC validation to planned future features in README.
35 tests define the full resolver contract using live DNS queries
against *.dns.sneak.cloud (Cloudflare). Tests cover:
- FindAuthoritativeNameservers: iterative NS discovery, sorting,
determinism, trailing dot handling, TLD and subdomain cases
- QueryNameserver: A, AAAA, CNAME, MX, TXT, NXDOMAIN, per-NS
response model with status field, sorted record values
- QueryAllNameservers: independent per-NS queries, consistency
verification, NXDOMAIN from all NS
- LookupNS: NS record lookup matching FindAuthoritative
- ResolveIPAddresses: basic, multi-A, IPv6, dual-stack, CNAME
following, deduplication, sorting, NXDOMAIN returns empty
- Context cancellation for all methods
- Iterative resolution proof (resolves example.com from root)
Also adds DNSSEC validation to planned future features in README.
Full project structure following upaas conventions: uber/fx DI, go-chi
routing, slog logging, Viper config. State persisted as JSON file with
per-nameserver record tracking for inconsistency detection. Stub
implementations for resolver, portcheck, tlscheck, and watcher.
sneak