Integration Testing Paystack Flows End to End

// integration/payment-flow.test.js
// Uses real Paystack test API — requires PAYSTACK_SECRET_KEY=sk_test_...
const crypto = require('crypto');
const request = require('supertest');
const app = require('../app');
const db = require('../db');

describe('Paystack payment flow (integration)', () => {
  let orderId;

  beforeEach(async () => {
    // Create a pending order in the test database
    var order = await db.orders.create({
      email: 'test@example.com',
      amount: 10000, // NGN 100
      status: 'pending',
    });
    orderId = order.id;
  });

  afterEach(async () => {
    await db.orders.destroy({ where: { id: orderId } });
  });

  it('initializes transaction and returns authorization_url', async () => {
    var res = await request(app).post('/api/checkout').send({
      email: 'test@example.com',
      amount: 10000,
      order_id: orderId,
    });

    expect(res.status).toBe(200);
    expect(res.body.authorization_url).toMatch(/checkout.paystack.com/);
  });

  it('fulfills order when valid charge.success webhook arrives', async () => {
    var reference = 'test_ref_' + Date.now();
    var payload = {
      event: 'charge.success',
      data: {
        reference,
        amount: 1000000, // NGN 10,000 in kobo
        status: 'success',
        metadata: { order_id: orderId },
        customer: { email: 'test@example.com' },
      },
    };
    var body = JSON.stringify(payload);
    var sig = crypto
      .createHmac('sha512', process.env.PAYSTACK_SECRET_KEY)
      .update(body)
      .digest('hex');

    var res = await request(app)
      .post('/webhook/paystack')
      .set('x-paystack-signature', sig)
      .set('Content-Type', 'application/json')
      .send(body);

    expect(res.status).toBe(200);

    var updated = await db.orders.findByPk(orderId);
    expect(updated.status).toBe('paid');
    expect(updated.paystack_reference).toBe(reference);
  });
});

This guide is part of the Paystack testing guide.

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