hermes-agent/tests/gateway/relay/test_descriptor.py
Ben 53d9b98305 feat(relay): experimental CapabilityDescriptor schema
Frozen, JSON-serializable handshake payload the connector hands the future
RelayAdapter: char limit, draft-streaming/edit/threading flags, markdown
dialect, len_unit. Mostly a wire projection of PlatformEntry + the adapter
capability methods. contract_version gates additive-only evolution; declared
EXPERIMENTAL until >=2 Class-1 platforms validate it. from_json ignores
unknown keys (forward-compat) and fills optional defaults.

Phase 0, Task 0.2 of the gateway-relay plan.
2026-06-17 16:37:45 -07:00

66 lines
2.2 KiB
Python

"""Tests for the experimental CapabilityDescriptor (relay Phase 0, Task 0.2)."""
from gateway.relay.descriptor import CONTRACT_VERSION, CapabilityDescriptor
def _telegram_descriptor(**overrides) -> CapabilityDescriptor:
base = dict(
contract_version=CONTRACT_VERSION,
platform="telegram",
label="Telegram",
max_message_length=4096,
supports_draft_streaming=False,
supports_edit=True,
supports_threads=True,
markdown_dialect="markdown_v2",
len_unit="utf16",
emoji="\u2708\ufe0f",
platform_hint="You are on Telegram.",
pii_safe=False,
)
base.update(overrides)
return CapabilityDescriptor(**base)
def test_descriptor_roundtrips_json():
d = _telegram_descriptor()
assert CapabilityDescriptor.from_json(d.to_json()) == d
def test_descriptor_is_frozen():
d = _telegram_descriptor()
try:
d.max_message_length = 1 # type: ignore[misc]
except Exception as exc: # FrozenInstanceError
assert "cannot assign" in str(exc) or "frozen" in str(exc).lower()
else: # pragma: no cover
raise AssertionError("descriptor should be immutable (frozen)")
def test_from_json_ignores_unknown_keys():
"""A newer connector may send fields this gateway doesn't know — those are
dropped, not fatal (forward-compat during the experimental phase)."""
d = _telegram_descriptor()
raw = d.to_json()[:-1] + ', "future_field": "ignored"}'
restored = CapabilityDescriptor.from_json(raw)
assert restored == d
def test_from_json_fills_optional_defaults():
"""Optional fields (emoji/platform_hint/pii_safe) fall back to defaults."""
minimal = (
'{"contract_version": 1, "platform": "x", "label": "X", '
'"max_message_length": 2000, "supports_draft_streaming": false, '
'"supports_edit": false, "supports_threads": false, '
'"markdown_dialect": "plain", "len_unit": "chars"}'
)
d = CapabilityDescriptor.from_json(minimal)
assert d.pii_safe is False
assert d.platform_hint == ""
assert d.emoji == "\U0001f50c"
def test_module_is_marked_experimental():
import gateway.relay.descriptor as m
assert "EXPERIMENTAL" in (m.__doc__ or "")