from __future__ import annotations

from pathlib import Path


def test_agent_chat_migration_exists_and_creates_expected_tables() -> None:
    versions_dir = Path(__file__).resolve().parents[3] / "alembic" / "versions"
    migration = versions_dir / "20260226_create_agent_chat_core_tables.py"

    assert migration.exists()

    content = migration.read_text(encoding="utf-8")
    assert 'create_table(\n        "llm_factory"' in content
    assert 'create_table(\n        "llms"' in content
    assert 'create_table(\n        "sessions"' in content
    assert 'create_table(\n        "messages"' in content
    assert "tool_calls" not in content