hermes-agent/tests/test_message_reactions.py
Brooklyn Nicholson 1af8839139 fix(state): make _row_id opt-in per consumer instead of universal
CI caught ACP session restore seeing an unexpected _row_id in restored
history — get_messages_as_conversation feeds more than the desktop, and
changing the default shape broke the strictest consumer. Row ids are now
include_row_ids=True, requested only by the gateway's resume/display
projections; ACP restore, export, and inspection get the transcript in its
historical shape.
2026-07-30 00:08:28 -05:00

175 lines
6.4 KiB
Python

"""Message reactions: persistence, tapback semantics, and cache safety.
Behavior contracts, not snapshots — these assert how reactions must RELATE to
the transcript (one per author, announced once, never mutating history), so
they survive refactors of where reactions are stored.
"""
import pytest
from hermes_state import SessionDB
@pytest.fixture
def db(tmp_path, monkeypatch):
monkeypatch.setenv("HERMES_HOME", str(tmp_path))
return SessionDB(db_path=tmp_path / "state.db")
@pytest.fixture
def session(db):
key = db.create_session("react-test", "test")
db.append_message(key, "user", "how do i center a div")
db.append_message(key, "assistant", "use flexbox")
rows = [m["_row_id"] for m in db.get_messages_as_conversation(key, include_row_ids=True)]
return key, rows
def test_conversation_rows_carry_durable_row_id(session, db):
"""Every projected message exposes its messages.id — reactions key off it."""
key, rows = session
assert all(isinstance(r, int) for r in rows)
assert rows == sorted(rows), "row ids must follow insertion order"
assert len(set(rows)) == len(rows), "row ids must be unique"
def test_one_reaction_per_author(session, db):
"""A second emoji from the same author REPLACES the first (iOS Tapback)."""
key, rows = session
db.set_message_reaction(key, rows[0], "\u2764\ufe0f", author="user")
reactions = db.set_message_reaction(key, rows[0], "\U0001f602", author="user")
assert [r["emoji"] for r in reactions] == ["\U0001f602"]
def test_repeating_an_emoji_retracts_it(session, db):
"""Tapping the live reaction again clears it."""
key, rows = session
db.set_message_reaction(key, rows[0], "\U0001f44d", author="user")
reactions = db.set_message_reaction(key, rows[0], "\U0001f44d", author="user")
assert reactions == []
assert db.get_message_reactions(key, rows[0]) == []
def test_authors_are_independent(session, db):
"""User and agent each hold their own slot on the same message."""
key, rows = session
db.set_message_reaction(key, rows[0], "\u2764\ufe0f", author="user")
reactions = db.set_message_reaction(key, rows[0], "\U0001f525", author="agent")
assert {r["author"] for r in reactions} == {"user", "agent"}
remaining = db.set_message_reaction(key, rows[0], None, author="user")
assert [r["author"] for r in remaining] == ["agent"]
def test_rejects_rows_outside_the_session(session, db):
"""A row id from another conversation is never writable."""
key, rows = session
other = db.create_session("other", "test")
db.append_message(other, "user", "elsewhere")
assert db.set_message_reaction(key, 9999, "\u2764\ufe0f") is None
assert db.set_message_reaction("no-such-session", rows[0], "\u2764\ufe0f") is None
def test_clearing_every_reaction_leaves_no_metadata(session, db):
"""An empty reaction set removes the key instead of persisting `[]`."""
key, rows = session
db.set_message_reaction(key, rows[0], "\u2764\ufe0f", author="user")
db.set_message_reaction(key, rows[0], None, author="user")
message = db.get_messages_as_conversation(key)[0]
assert "display_metadata" not in message
def test_reactions_survive_reload(session, db):
"""Reactions are durable, not in-memory display state."""
key, rows = session
db.set_message_reaction(key, rows[1], "\U0001f525", author="agent")
reopened = SessionDB(db_path=db.db_path)
assert [r["emoji"] for r in reopened.get_message_reactions(key, rows[1])] == ["\U0001f525"]
def test_unseen_reactions_are_taken_exactly_once(session, db):
"""The model is told about a reaction on ONE turn, never twice."""
key, rows = session
db.set_message_reaction(key, rows[1], "\u2764\ufe0f", author="user")
first = db.take_unseen_reactions(key, author="user")
assert [e["emoji"] for e in first] == ["\u2764\ufe0f"]
assert first[0]["row_id"] == rows[1]
assert first[0]["text"] == "use flexbox"
assert db.take_unseen_reactions(key, author="user") == []
def test_a_new_reaction_becomes_unseen_again(session, db):
"""Replacing a seen reaction re-arms the announcement."""
key, rows = session
db.set_message_reaction(key, rows[1], "\u2764\ufe0f", author="user")
db.take_unseen_reactions(key, author="user")
db.set_message_reaction(key, rows[1], "\U0001f525", author="user")
assert [e["emoji"] for e in db.take_unseen_reactions(key, author="user")] == ["\U0001f525"]
def test_take_unseen_filters_by_author(session, db):
"""The agent's own reactions are never fed back to it as user input."""
key, rows = session
db.set_message_reaction(key, rows[0], "\U0001f60a", author="agent")
assert db.take_unseen_reactions(key, author="user") == []
def test_reacting_never_mutates_message_content(session, db):
"""CACHE SAFETY: reacting must not rewrite any already-sent message.
Rewriting a past message would invalidate the provider's cached prefix for
the whole conversation — the reason reactions ride display_metadata and are
announced on the NEXT turn instead.
"""
key, rows = session
before = [m["content"] for m in db.get_messages_as_conversation(key)]
db.set_message_reaction(key, rows[0], "\u2764\ufe0f", author="user")
db.set_message_reaction(key, rows[1], "\U0001f525", author="agent")
db.take_unseen_reactions(key, author="user")
after = [m["content"] for m in db.get_messages_as_conversation(key)]
assert before == after
def test_latest_user_message_is_the_agents_default_target(session, db):
"""The agent reacts to "the message that triggered me" without an id."""
key, rows = session
assert db.latest_user_message_row_id(key) == rows[0]
db.append_message(key, "user", "thanks!")
newest = db.get_messages_as_conversation(key, include_row_ids=True)[-1]["_row_id"]
assert db.latest_user_message_row_id(key) == newest
def test_row_id_is_opt_in_and_never_reaches_the_provider(session, db):
"""Only include_row_ids=True consumers see _row_id — and it's underscore-
prefixed so transports strip it before the wire even for them. Default
consumers (ACP restore, export) get the transcript in its historical shape.
"""
key, _rows = session
for message in db.get_messages_as_conversation(key):
assert "_row_id" not in message
for message in db.get_messages_as_conversation(key, include_row_ids=True):
assert "_row_id" in message
assert all(not k.startswith("_") or k == "_row_id" for k in message)