boma/tests/test_public_dns.py

import pathlib

import yaml

_DATA = (
    pathlib.Path(__file__).resolve().parent.parent
    / "inventories" / "production" / "group_vars" / "all" / "public_dns.yml"
)

# Gandi auto-seeds these on a fresh .me zone; boma purges them (verified 2026-06-14).
# Includes the @ MX: Gandi rejects the RFC-7505 null-MX "0 .", so we remove the MX
# entirely (no MX + no apex A = no mail) rather than declare a null-MX present.
GANDI_DEFAULTS_ABSENT = {
    ("@", "A"), ("@", "MX"), ("www", "CNAME"), ("webmail", "CNAME"),
    ("gm1._domainkey", "CNAME"), ("gm2._domainkey", "CNAME"), ("gm3._domainkey", "CNAME"),
    ("_imap._tcp", "SRV"), ("_imaps._tcp", "SRV"), ("_pop3._tcp", "SRV"),
    ("_pop3s._tcp", "SRV"), ("_submission._tcp", "SRV"),
}


def _load():
    return yaml.safe_load(_DATA.read_text())


def test_domain_is_wingu():
    assert _load()["public_dns__domain"] == "wingu.me"


def test_present_records_well_formed():
    for r in _load()["public_dns__records"]:
        assert r["record"] and r["type"]
        assert isinstance(r["values"], list) and r["values"]


def test_anti_spoof_baseline_present():
    recs = {(r["record"], r["type"]): r["values"] for r in _load()["public_dns__records"]}
    assert recs[("@", "TXT")] == ['"v=spf1 -all"']            # SPF deny-all
    assert recs[("_dmarc", "TXT")] == ['"v=DMARC1; p=reject;"']
    assert ("@", "MX") not in recs                            # no MX (Gandi rejects null-MX; removed instead)


def test_gandi_defaults_marked_absent():
    absent = {(r["record"], r["type"]) for r in _load()["public_dns__absent"]}
    assert GANDI_DEFAULTS_ABSENT <= absent


def test_no_record_both_present_and_absent():
    present = {(r["record"], r["type"]) for r in _load()["public_dns__records"]}
    absent = {(r["record"], r["type"]) for r in _load()["public_dns__absent"]}
    assert present.isdisjoint(absent)


def test_no_duplicate_present_records():
    keys = [(r["record"], r["type"]) for r in _load()["public_dns__records"]]
    assert len(keys) == len(set(keys))