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