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odysseus/tests/test_replace_messages_multimodal.py
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2026-06-07 23:44:16 +02:00

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Python

"""replace_messages must JSON-serialize multimodal (list) content.
A chat with an image/audio attachment carries list content. When such a
chat is compacted, the manual-compaction path calls replace_messages with
the retained messages. replace_messages wrote message.content straight into
the Text column, so SQLAlchemy bound the list\'s single-quoted repr. On
reload _parse_msg_content only de-serializes a string that contains the
double-quoted "type", so the repr failed the check and the message came
back as a corrupted string blob - the attachment was destroyed. The
sibling _persist_message json.dumps-es list content; replace_messages did
not.
"""
import uuid
import pytest
import core.database as cdb
from core.database import Session as DbSession
from core.models import ChatMessage
from tests.helpers.sqlite_db import make_temp_sqlite
_TS, _ENGINE, _TMPDB = make_temp_sqlite(cdb.Base.metadata)
@pytest.fixture
def manager(monkeypatch):
import core.session_manager as sm
monkeypatch.setattr(sm, "SessionLocal", _TS)
mgr = sm.SessionManager.__new__(sm.SessionManager)
mgr.sessions = {}
return mgr
def _make_session(sid, owner="alice"):
db = _TS()
try:
db.add(DbSession(id=sid, owner=owner, name="chat", model="gpt-4o",
endpoint_url="http://localhost:11434",
archived=False, message_count=1))
db.commit()
finally:
db.close()
def test_multimodal_content_round_trips_through_replace_messages(manager):
sid = "sess-" + uuid.uuid4().hex[:8]
_make_session(sid)
multimodal = [
{"type": "text", "text": "what is this?"},
{"type": "image_url", "image_url": {"url": "data:image/png;base64,AAAA"}},
]
msgs = [ChatMessage(role="user", content=multimodal)]
assert manager.replace_messages(sid, msgs) is True
# Drop the in-memory cache so the next read hydrates from the DB.
manager.sessions.clear()
reloaded = manager.get_session(sid)
assert len(reloaded.history) == 1
# Content must come back as the original list, not a repr string blob.
assert reloaded.history[0].content == multimodal
def test_plain_string_content_still_round_trips(manager):
sid = "sess-" + uuid.uuid4().hex[:8]
_make_session(sid)
msgs = [ChatMessage(role="user", content="just text")]
assert manager.replace_messages(sid, msgs) is True
manager.sessions.clear()
reloaded = manager.get_session(sid)
assert reloaded.history[0].content == "just text"