from __future__ import annotations

from sqlalchemy import create_engine, inspect

from app.db.schema_ownership import MIGRATION_OWNED_TABLES, create_legacy_schema


def test_create_legacy_schema_never_creates_migration_owned_tables() -> None:
    engine = create_engine("sqlite+pysqlite:///:memory:")
    try:
        create_legacy_schema(engine)

        table_names = set(inspect(engine).get_table_names())
    finally:
        engine.dispose()

    assert MIGRATION_OWNED_TABLES == frozenset(
        {
            "auth_sessions",
            "business_events",
            "expense_case_links",
            "expense_cases",
        }
    )
    assert table_names
    assert table_names.isdisjoint(MIGRATION_OWNED_TABLES)