Adds tests/test_roundtrip_attrs.pas covering:
1. Capabilities API smoke test — confirms SupportsAttribute('msgid')
returns true on JAM/Squish/MSG/PKT, false on Hudson/GoldBase/
EzyCom/Wildcat/PCBoard. Confirms backend-private keys are gated
correctly (Squish.SupportsAttribute('jam.msgidcrc') = false).
2. Per-format kludge round-trip across all 5 storage formats —
builds a synthetic message with universal headers + FTSC kludges
(msgid, replyid, pid, flags, multi-line seen-by + path), writes,
reopens, reads back, asserts every key the backend's capability
list advertises survives byte-for-byte. Backends that don't
support a given key are silently skipped via SupportsAttribute
gating so the test exercises each format's actual contract.
3. Cross-format JAM → Squish copy — seeds JAM with the kludge
message, copies to a fresh Squish base via the unified API,
reopens both, asserts:
- intersection of capabilities lists is preserved verbatim
(msgid, seen-by, path, etc. all survive JAM → Squish)
- jam.* keys not in Squish's capability list are dropped
(no silent corruption of Squish's data with foreign keys)
Result: 7/7 new tests pass. Total suite now 31/31 across 8 programs.
This is the regression suite that locks the Body+Attributes contract
and proves the showstopper fix holds across every backend.
Hooked into run_tests.sh so CI catches future drift.
Ken Johnson
d7e58932e9