"""Test for the create_db_and_tables function in backend.models."""

from unittest.mock import patch

from backend.models import Base
from backend.models import create_db_and_tables
from backend.models import engine


def test_create_db_and_tables() -> None:
    """Test the create_db_and_tables function.

    Verifies that the function correctly calls SQLModel.metadata.create_all with
    the synchronous engine.
    """
    with patch.object(Base.metadata, "create_all") as mock_create_all:
        create_db_and_tables()
        mock_create_all.assert_called_once_with(engine.sync_engine)