test(backoffice): add unit tests for StripeService
- Add 8 test cases covering all StripeService methods - Mock Stripe SDK for isolated testing - Test createCustomer, createSubscription, cancelSubscription - Test listSubscriptions, createCheckoutSession, createBillingPortalSession - Test constructWebhookEvent and onModuleInit
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Tiago Yamamoto
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1 changed files with 159 additions and 0 deletions
159
backoffice/src/stripe/stripe.service.spec.ts
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159
backoffice/src/stripe/stripe.service.spec.ts
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import { Test, TestingModule } from '@nestjs/testing';
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import { ConfigService } from '@nestjs/config';
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import { StripeService } from './stripe.service';
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// Mock Stripe
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jest.mock('stripe', () => {
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return jest.fn().mockImplementation(() => ({
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customers: {
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create: jest.fn().mockResolvedValue({ id: 'cus_test123', email: 'test@example.com' }),
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},
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subscriptions: {
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create: jest.fn().mockResolvedValue({ id: 'sub_test123', status: 'active' }),
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cancel: jest.fn().mockResolvedValue({ id: 'sub_test123', status: 'canceled' }),
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list: jest.fn().mockResolvedValue({ data: [] }),
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},
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checkout: {
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sessions: {
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create: jest.fn().mockResolvedValue({ id: 'cs_test123', url: 'https://checkout.stripe.com/test' }),
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},
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},
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billingPortal: {
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sessions: {
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create: jest.fn().mockResolvedValue({ id: 'bps_test123', url: 'https://billing.stripe.com/test' }),
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},
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},
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webhooks: {
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constructEvent: jest.fn().mockReturnValue({ type: 'checkout.session.completed' }),
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},
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}));
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});
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describe('StripeService', () => {
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let service: StripeService;
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let configService: ConfigService;
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beforeEach(async () => {
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const module: TestingModule = await Test.createTestingModule({
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providers: [
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StripeService,
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{
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provide: ConfigService,
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useValue: {
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get: jest.fn((key: string) => {
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const config: Record<string, string> = {
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STRIPE_SECRET_KEY: 'sk_test_fake123',
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STRIPE_WEBHOOK_SECRET: 'whsec_test123',
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};
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return config[key];
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}),
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},
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},
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],
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}).compile();
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service = module.get<StripeService>(StripeService);
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configService = module.get<ConfigService>(ConfigService);
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// Initialize the service
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service.onModuleInit();
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});
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describe('onModuleInit', () => {
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it('should initialize Stripe client when secret key is configured', () => {
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expect(service.getClient()).toBeDefined();
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});
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it('should warn when STRIPE_SECRET_KEY is not configured', () => {
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const warnSpy = jest.spyOn(console, 'warn').mockImplementation();
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jest.spyOn(configService, 'get').mockReturnValue(undefined);
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const newService = new StripeService(configService);
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newService.onModuleInit();
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expect(warnSpy).toHaveBeenCalledWith('STRIPE_SECRET_KEY not configured');
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warnSpy.mockRestore();
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});
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});
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describe('createCustomer', () => {
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it('should create a customer with email and name', async () => {
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const result = await service.createCustomer('test@example.com', 'Test User');
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expect(result).toEqual({ id: 'cus_test123', email: 'test@example.com' });
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expect(service.getClient().customers.create).toHaveBeenCalledWith({
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email: 'test@example.com',
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name: 'Test User',
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});
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});
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});
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describe('createSubscription', () => {
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it('should create a subscription for a customer', async () => {
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const result = await service.createSubscription('cus_test123', 'price_test123');
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expect(result).toEqual({ id: 'sub_test123', status: 'active' });
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expect(service.getClient().subscriptions.create).toHaveBeenCalledWith({
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customer: 'cus_test123',
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items: [{ price: 'price_test123' }],
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payment_behavior: 'default_incomplete',
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expand: ['latest_invoice.payment_intent'],
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});
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});
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});
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describe('cancelSubscription', () => {
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it('should cancel a subscription', async () => {
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const result = await service.cancelSubscription('sub_test123');
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expect(result).toEqual({ id: 'sub_test123', status: 'canceled' });
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});
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});
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describe('listSubscriptions', () => {
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it('should list subscriptions for a customer', async () => {
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const result = await service.listSubscriptions('cus_test123');
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expect(result).toEqual({ data: [] });
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expect(service.getClient().subscriptions.list).toHaveBeenCalledWith({
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customer: 'cus_test123',
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status: 'all',
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});
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});
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});
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describe('createCheckoutSession', () => {
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it('should create a checkout session', async () => {
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const result = await service.createCheckoutSession(
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'cus_test123',
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'price_test123',
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'https://example.com/success',
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'https://example.com/cancel',
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);
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expect(result).toEqual({ id: 'cs_test123', url: 'https://checkout.stripe.com/test' });
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});
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});
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describe('createBillingPortalSession', () => {
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it('should create a billing portal session', async () => {
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const result = await service.createBillingPortalSession(
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'cus_test123',
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'https://example.com/return',
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);
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expect(result).toEqual({ id: 'bps_test123', url: 'https://billing.stripe.com/test' });
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});
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});
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describe('constructWebhookEvent', () => {
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it('should construct a webhook event from request body', () => {
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const body = Buffer.from('{}');
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const signature = 'test_signature';
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const result = service.constructWebhookEvent(body, signature);
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expect(result).toEqual({ type: 'checkout.session.completed' });
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});
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});
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});
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