# -*- coding: utf-8 -*-
"""init_db：幂等创建元数据表与本技能业务表。"""
from __future__ import annotations

import unittest

from _support import IsolatedDataRoot


class TestDbSmoke(unittest.TestCase):
    def test_init_db_idempotent_metadata_only(self) -> None:
        with IsolatedDataRoot():
            from db.connection import get_conn, init_db
            from db.display_metadata import METADATA_TABLES, iter_user_tables

            init_db()
            init_db()

            conn = get_conn()
            try:
                cur = conn.cursor()
                cur.execute(
                    "SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%'"
                )
                tables = {str(row[0]) for row in cur.fetchall()}
                self.assertIn("_jiangchang_tables", tables)
                self.assertIn("_jiangchang_columns", tables)
                self.assertNotIn("task_logs", tables)
                # 本技能建 2 张业务表
                self.assertEqual(
                    list(iter_user_tables(cur)),
                    ["payroll_config", "payslip_snapshots"],
                )
                leftover = tables - METADATA_TABLES - {"payroll_config", "payslip_snapshots"}
                self.assertEqual(leftover, set())
            finally:
                conn.close()


if __name__ == "__main__":
    unittest.main()