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roboco/tests/unit/api/schemas/test_work_session_response.py
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2026-06-29 05:38:21 +02:00
"""session_to_response / session_to_summary honesty for a null agent_id.
The ``work_sessions.agent_id`` column is ``nullable=True`` with
``ondelete="SET NULL"`` — if an agent row is deleted, the FK nulls out on every
session that agent ever held. The read path (``session_to_response`` ->
``WorkSessionResponse``) used to assume ``agent_id`` was always present: the
ORM ``Mapped[UUID]`` lied, the converter ``typing_cast("UUID", ...)``
papered over the lie, and ``WorkSessionResponse.agent_id: UUID`` rejected
``None`` outright. A session whose agent had been deleted therefore crashed
the GET endpoint with a pydantic ``ValidationError`` instead of serializing
``agent_id: null``. These tests pin the honest end-to-end read path.
"""
from __future__ import annotations
from datetime import UTC, datetime
from uuid import UUID, uuid4
from roboco.api.schemas.work_session import (
WorkSessionResponse,
session_to_response,
session_to_summary,
)
from roboco.db.tables import WorkSessionTable
from roboco.models.work_session import WorkSessionStatus
def _make_session(agent_id: UUID | None) -> WorkSessionTable:
"""Build a detached WorkSessionTable row with an explicit agent_id."""
now = datetime.now(UTC)
return WorkSessionTable(
id=uuid4(),
project_id=uuid4(),
task_id=uuid4(),
agent_id=agent_id,
branch_name="feature/x",
base_branch="main",
target_branch="main",
started_at=now,
status=WorkSessionStatus.ACTIVE,
commits=[],
files_modified=[],
created_at=now,
)
def test_session_to_response_serializes_null_agent_id() -> None:
"""A SET-NULL'd session (agent deleted) must serialize agent_id as None."""
session = _make_session(agent_id=None)
result = session_to_response(session)
assert isinstance(result, WorkSessionResponse)
assert result.agent_id is None
def test_session_to_response_preserves_present_agent_id() -> None:
"""A normal session still carries its agent_id through unchanged."""
agent_id = uuid4()
result = session_to_response(_make_session(agent_id=agent_id))
assert result.agent_id == agent_id
def test_session_to_summary_does_not_read_agent_id() -> None:
"""The summary view omits agent_id entirely, so a null agent must not raise."""
result = session_to_summary(_make_session(agent_id=None))
assert result.status == WorkSessionStatus.ACTIVE