dukang/packages/domain/src/city-partner.test.ts

import { describe, expect, it } from 'vitest';
import {
  validatePartnerCityBinding,
  validatePartnerCommissionRates,
} from './city-partner';

describe('validatePartnerCityBinding', () => {
  it('rejects duplicate partner', () => {
    const result = validatePartnerCityBinding(
      [{ id: '1', partnerAccountId: '10', scopeType: 'CITY_WIDE' }],
      { partnerAccountId: '10', scopeType: 'DISTRICT', districtCodes: ['410105'] },
    );
    expect(result.ok).toBe(false);
  });

  it('rejects second city-wide partner', () => {
    const result = validatePartnerCityBinding(
      [{ id: '1', partnerAccountId: '10', scopeType: 'CITY_WIDE' }],
      { partnerAccountId: '11', scopeType: 'CITY_WIDE' },
    );
    expect(result.ok).toBe(false);
  });

  it('allows overlapping district codes as labels', () => {
    const result = validatePartnerCityBinding(
      [
        {
          id: '1',
          partnerAccountId: '10',
          scopeType: 'DISTRICT',
          districtCodes: ['410105'],
          companyName: '甲公司',
        },
      ],
      { partnerAccountId: '11', scopeType: 'DISTRICT', districtCodes: ['410105'] },
    );
    expect(result.ok).toBe(true);
  });

  it('allows district partner without district codes', () => {
    const result = validatePartnerCityBinding(
      [],
      { partnerAccountId: '11', scopeType: 'DISTRICT', districtCodes: [] },
    );
    expect(result.ok).toBe(true);
  });

  it('allows valid district binding', () => {
    const result = validatePartnerCityBinding(
      [{ id: '1', partnerAccountId: '10', scopeType: 'DISTRICT', districtCodes: ['410105'] }],
      { partnerAccountId: '11', scopeType: 'DISTRICT', districtCodes: ['410106'] },
    );
    expect(result.ok).toBe(true);
  });
});

describe('validatePartnerCommissionRates', () => {
  it('allows sum within default 5% cap', () => {
    expect(validatePartnerCommissionRates(0.02, 0.03).ok).toBe(true);
  });

  it('rejects sum above cap', () => {
    const result = validatePartnerCommissionRates(0.03, 0.03, 0.05);
    expect(result.ok).toBe(false);
    expect(result.message).toContain('5.00%');
  });

  it('respects custom city cap', () => {
    expect(validatePartnerCommissionRates(0.04, 0.04, 0.08).ok).toBe(true);
    expect(validatePartnerCommissionRates(0.05, 0.04, 0.08).ok).toBe(false);
  });
});