resolved: tests for dns_cache_lookup() clamping the TTL

resolved: tests for dns_cache_put() for  NXDOMAIN with no SOA

resolved: test that pseudo classes and types are not cached

resolves: tests for dns_cache_prune()

resolved: tests for dns_cache_check_conflicts()

resolved: tests for dns_cache_export_shared_to_packet()

resolved: tests for dns_cache_lookup(); mDNS and multiple matching entries

resolved: tests for dns_cache_lookup() returning the most recent input

resolved: tests for dns_cache_dump()

resolved: test cache misses

resolved: tests for dns_cache_lookup() for NXDOMAIN

resolved: first test for dns_cache_lookup()

resolved: tests for dns_cache_dump_to_json()

resolved: check that adding an expired response removes cache entry

resolved: tests for dns_cache_put(); CNAME success and name error

resolved: tests for dns_cache_put() with non-matching class, type, name

resolved: refactor DNS answer construction for cache tests

resolved: test for dns_cache_put() with empty answer

resolved: tests for dns_cache_put() with different RCODEs

resolved: tests for dns_cache_put(); successful A query

Co-Authored-By: jan@neighbourhood.ie

Merge pull request #33531 from neighbourhoodie/tests/dns-zone

resolved: tests for dns_zone_lookup()

resolved: tests for dns_zone_remove_rrs_by_key()

resolved: tests for dns_zone_remove_rr()

resolved: tests for dns_zone_put()

Merge pull request #33530 from neighbourhoodie/tests/dns-search-domain

resolved: tests for dns_search_domain_find()

resolved: tests for search domain marking and unlinking

resolved: extract function for checking search domains

resolved: tests for dns_search_domain_unlink()

resolved: tests for dns_search_domain_new()

Merge pull request #33529 from neighbourhoodie/tests/dns-link

Tests for DNS Link functions

Merge pull request #33528 from neighbourhoodie/tests/dns-answer

resolved: tests for dns_answer_order_by_scope()

resolved: tests for dns_answer_has_dname_for_cname()

resolved: tests for dns_answer_dump()

resolved: tests for dns_answer_{copy,move}_by_key()

resolved: tests for dns_answer_remove_by_answer_keys()

resolved: tests for dns_answer_remove_by_{key,rr}()

resolved: tests for dns_answer_merge() and dns_answer_extend()

resolved: tests for dns_answer_find_soa()

resolved: tests for dns_answer_add(), dns_answer_match_key()

Merge pull request #33526 from neighbourhoodie/tests/dns-question

resolved: tests for dns_question_merge()

resolved: tests for dns_question_first_name()

resolved: tests for dns_question_dump()

resolved: tests for dns_question_cname_redirect()

resolved: tests for dns_question_is_equal()

resolved: tests for dns_question_is_valid_for_query()

resolved: tests for dns_question_matches_cname_or_dname()

resolved: tests for dns_question_matches_rr()

resolved: tests for dns_question_new_service()

resolved: tests for dns_question_new_reverse()

resolved: tests for dns_question_new_address()

resolved: tests for dns_question_add()

Merge pull request #33525 from neighbourhoodie/tests/dns-rr

resolved: tests for dns_resource_record_source(), dns_resource_record_is_synthetic(), dns_resource_record_signer(), dns_resource_record_is_signer()

resolved: tests for dns_resource_record_to_wire_format()

Note this function does not produce compressed domain names in the RDATA
when serializing the RR.

resolved: tests for dns_resource_record_to_string()

resolved: tests for dns_resource_key_{to,from}_json()

This test doesn't check the generated JSON data in detail, it simply
tests that round-tripping an RR key through the JSON representation
preserves its data.

resolved: tests for dns_resource_record_clamp_ttl()

resolved: tests for dns_resource_record_equal(); LOC records

resolved: tests for dns_resource_record_equal(); SVCB records

resolved: tests for dns_resource_record_equal(); RRSIG records

resolved: tests for dns_resource_record_equal(); NAPTR records

resolved: tests for dns_resource_record_equal(); SRV records

resolved: tests for dns_resource_record_equal(); TXT records

resolved: tests for dns_resource_record_equal(); DNAME records

resolved: tests for dns_resource_record_equal(); MX records

resolved: tests for dns_resource_record_equal(); HINFO records

resolved: tests for dns_resource_record_equal(); PTR records

resolved: tests for dns_resource_record_equal(); SOA records

resolved: tests for dns_resource_record_equal(); CNAME records

resolved: tests for dns_resource_record_equal(); NS records

resolved: tests for dns_resource_record_equal(); A and AAAA records

resolved: tests for dns_resource_record_equal(); general cases

These tests cover comparisons between RR objects that are not class- or
type-specific, i.e. they don't check any of the RDATA fields.

resolved: tests for dns_resource_record_new_address(), dns_resource_record_new_reverse()

resolved: tests for dns_resource_key_reduce()

resolved: tests for dns_resource_key_to_string()

resolved: tests for dns_resource_key_match_cname_or_dname(), dns_resource_key_match_soa()

resolved: tests for dns_resource_key_equal() and dns_resource_key_match_rr()

resolved: tests for dns_resource_key_is_{address, dnssd_ptr, dnssd_two_label_ptr}

resolved: tests for dns_resource_key_new_append_suffix()

resolved: tests for dns_resource_key_new() and dns_resource_key_new_redirect()

resolved: test for DNS_RESOURCE_RECORD_RDATA()

Merge pull request #33524 from neighbourhoodie/tests/dns-packet

Tests for DNS packet parsing/serialising

Merge pull request #33804 from keszybz/assorted-cleanups

Assorted cleanups

Merge pull request #33791 from YHNdnzj/sd-notify-pidref

core: pin notify sender through pidfd (potentially SCM_PIDFD) plus various cleanups

Merge pull request #33814 from AnoukCeyssens/daemon

test: use new assertion macros more

fix compilation errors

test-clock: use new assertion macros

test-dev-setup: use new assertion macros

test-date: use new assertion macros

test-daemon: use new assertion macros

resolved: tests for link_allocate_scopes(): LLMNR, MDNS, IPv4/6

resolved: refactor env setup for link_allocate_scopes() tests

resolved: basic tests for link_allocate_scopes()

resolved: tests for link_find_address()

resolved: tests for link_relevant()

resolved: tests for link_new(), link_process_rtnl()