Seeding Test Data for a Payments Feature

// scripts/seed-test-data.js
// Run before test suite: node scripts/seed-test-data.js
require('dotenv').config({ path: '.env.test' });
const db = require('./db');

async function paystackPost(endpoint, body) {
  var res = await fetch('https://api.paystack.co' + endpoint, {
    method: 'POST',
    headers: {
      Authorization: 'Bearer ' + process.env.PAYSTACK_SECRET_KEY, // sk_test_...
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(body),
  });
  return res.json();
}

async function seed() {
  // Create test subaccount
  var subaccountRes = await paystackPost('/subaccount', {
    business_name: 'Test Vendor',
    settlement_bank: '057', // Zenith (test bank code)
    account_number: '0000000001', // fake in test mode
    percentage_charge: 80,
  });
  var subaccountCode = subaccountRes.data.subaccount_code;

  // Create test plan for subscriptions
  var planRes = await paystackPost('/plan', {
    name: 'Test Monthly Plan',
    interval: 'monthly',
    amount: 500000, // NGN 5,000
  });
  var planCode = planRes.data.plan_code;

  // Seed your database with matching records
  await db.vendors.upsert({ id: 1, name: 'Test Vendor', subaccount_code: subaccountCode });
  await db.plans.upsert({ id: 1, name: 'Monthly', paystack_plan_code: planCode, amount: 5000 });
  await db.orders.upsert({ id: 1, email: 'test@example.com', amount: 10000, status: 'pending' });

  // Save codes for use in tests
  require('fs').writeFileSync('test-seeds.json', JSON.stringify({ subaccountCode, planCode }));

  console.log('Test data seeded:', { subaccountCode, planCode });
  process.exit(0);
}

seed().catch(e => { console.error(e); process.exit(1); });

// tests/split-payment.test.js
const seeds = require('../test-seeds.json');

describe('Split payment checkout', () => {
  it('creates transaction with correct subaccount code', async () => {
    var paystack = require('../lib/paystack');
    paystack.initializeTransaction = jest.fn().mockResolvedValue({
      status: true,
      data: { authorization_url: 'https://checkout.paystack.com/test', reference: 'ref_001' },
    });

    await checkoutWithSplit({
      email: 'buyer@test.com',
      amount: 10000,
      vendor_id: 1, // Matches seeded vendor with known subaccount_code
    });

    expect(paystack.initializeTransaction).toHaveBeenCalledWith(
      expect.objectContaining({ subaccount: seeds.subaccountCode })
    );
  });
});

This guide is part of the Paystack testing guide.

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