def test_init_db_creates_tables():
    from app.db import _conn
    with _conn() as conn:
        tables = {row[0] for row in conn.execute(
            "SELECT name FROM sqlite_master WHERE type='table'"
        )}
    assert "announcements" in tables
    assert "announcement_models" in tables
    assert "user_profile" in tables
    assert "match_results" in tables
    assert "collect_log" in tables