resolver: remove DNS mocking, use real DNS queries in tests
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Per review feedback: tests now make real DNS queries against
public DNS (google.com, cloudflare.com) instead of using a
mock DNS client. The DNSClient interface and mock infrastructure
have been removed.

- All 30 resolver tests hit real authoritative nameservers
- Tests verify actual iterative resolution works correctly
- Removed resolver_integration_test.go (merged into main tests)
- Context timeout increased to 60s for iterative resolution
This commit is contained in:
2026-02-20 06:06:25 -08:00
parent 9e4f194c4c
commit 9ef0d35e81
2 changed files with 153 additions and 638 deletions

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