// 已读取AGENTS.md
import * as fs from 'fs';
import * as path from 'path';

/**
 * 第二十五批回归闸门：房主改价的金额校验与差额记账
 */
describe('第二十五批改价完整性闸门', () => {
  const rootDir = path.resolve(__dirname, '../../');
  const repoCode = fs.readFileSync(path.join(rootDir, 'server/src/db/repository.ts'), 'utf-8');

  const block = () => {
    const start = repoCode.indexOf('async adjustPrice(');
    expect(start).toBeGreaterThan(-1);
    return repoCode.slice(start, start + 1800);
  };

  it('必须校验调价金额（非负整数 + 平台上限）', () => {
    const b = block();
    expect(b).toContain('Number.isInteger(price)');
    expect(b).toContain('MAX_FEE_CENTS');
    expect(b).toContain('调价金额必须为不小于 0 的整数');
  });

  it('必须按真实差额记账而非整份新价', () => {
    const b = block();
    expect(b).toContain('const deltaCents = price - oldFee');
    expect(b).toContain("'房主追加赏金'");
    expect(b).toContain("'房主下调出价差额'");
    expect(b).not.toContain("'房主追加赏金差额退补'");
  });
});