Ghost/ghost/core/test/utils/stripe-mocker.js
Simon Backx 80cec29144
Added Stripe Mocker to make testing easier (#16396)
no issue

The Stripe Mocker mocks the Stripe API in memory, to make it much easier
to test subscription flows. Currently it is more a POC to see if it
works well. It probably needs a bit more work to support more scenarios.
- Added new tests for the subscription stats endpoint for 3D secure +
free trial flows using the new Stripe Mocker
- Updated members admin api tests to use Stripe Mocker (+ added new test
for deleting members with Stripe cancellation)
- Some tests called mockStripe at the beginning, but that method did
nothing apart from disabling network (which is the default now), then
they mocked Stripe inside the tests file... so I've removed those
because those conflict with the new mocker that is enabled when calling
mockStripe. We'll need to port those over later.
2023-03-10 18:43:35 +01:00

375 lines
11 KiB
JavaScript

const DomainEvents = require('@tryghost/domain-events');
const nock = require('nock');
let members = {};
let stripeService = {};
let tiers = {};
let models = {};
const crypto = require('crypto');
/**
* The Stripe Mocker mimics an in memory version of the Stripe API. We can use it to quickly create new subscriptions and get a close to real world test environment with working webhooks etc.
* If you create a new subscription, it will automatically send the customer.subscription.created webhook. So you can test what happens.
*/
class StripeMocker {
customers = [];
subscriptions = [];
paymentMethods = [];
setupIntents = [];
coupons = [];
prices = [];
products = [];
constructor(data = {}) {
this.customers = data.customers ?? [];
this.subscriptions = data.subscriptions ?? [];
this.paymentMethods = data.paymentMethods ?? [];
this.setupIntents = data.setupIntents ?? [];
this.coupons = data.coupons ?? [];
this.prices = data.prices ?? [];
this.products = data.products ?? [];
}
reset() {
this.customers = [];
this.subscriptions = [];
this.paymentMethods = [];
this.setupIntents = [];
this.coupons = [];
this.prices = [];
this.products = [];
// Fix for now, because of importing order breaking some things when they are not initialized
members = require('../../core/server/services/members');
stripeService = require('../../core/server/services/stripe');
tiers = require('../../core/server/services/tiers');
models = require('../../core/server/models');
}
#generateRandomId() {
return crypto.randomBytes(8).toString('hex');
}
createCustomer(overrides = {}) {
const customerId = `cus_${this.#generateRandomId()}`;
const stripeCustomer = {
id: customerId,
object: 'customer',
name: 'Test User',
email: customerId + '@example.com',
subscriptions: {
type: 'list',
data: []
},
...overrides
};
this.customers.push(stripeCustomer);
return stripeCustomer;
}
/**
*
* @param {*} tierSlug
* @param {'month' | 'year'} cadence
* @returns
*/
async getPriceForTier(tierSlug, cadence) {
const product = await models.Product.findOne({slug: tierSlug});
const tier = await tiers.api.read(product.id);
const payments = members.api.paymentsService;
const {id} = await payments.createPriceForTierCadence(tier, cadence);
return this.#getData(this.prices, id)[1];
}
async createTrialSubscription({customer, price, ...overrides}) {
return await this.createSubscription({
customer,
price,
status: 'trialing',
trial_end_at: (Date.now() + 1000 * 60 * 60 * 24 * 7) / 1000,
...overrides
});
}
async createIncompleteSubscription({customer, price, ...overrides}) {
return await this.createSubscription({
customer,
price,
status: 'incomplete',
...overrides
});
}
async updateSubscription({id, ...overrides}) {
const subscription = this.#postData(this.subscriptions, id, overrides, 'subscriptions')[1];
// Send update webhook
await this.sendWebhook({
type: 'customer.subscription.updated',
data: {
object: subscription
}
});
await DomainEvents.allSettled();
}
async createSubscription({customer, price, ...overrides}) {
const subscriptionId = `sub_${this.#generateRandomId()}`;
const subscription = {
id: subscriptionId,
object: 'subscription',
cancel_at_period_end: false,
canceled_at: null,
current_period_end: (Date.now() + 1000 * 60 * 60 * 24 * 31) / 1000,
start_date: Math.floor(Date.now() / 1000),
status: 'active',
items: {
type: 'list',
data: [
{
price
}
]
},
customer: customer.id,
...overrides
};
this.subscriptions.push(subscription);
customer.subscriptions.data.push(subscription);
// Announce
await this.sendWebhook({
type: 'checkout.session.completed',
data: {
object: {
mode: 'subscription',
customer: customer.id,
metadata: {
checkoutType: 'signup'
}
}
}
});
return subscription;
}
#getData(arr, id) {
const setupIntent = arr.find(c => c.id === id);
if (!setupIntent) {
return [404];
}
return [200, setupIntent];
}
#postData(arr, id, body, resource) {
const qs = require('qs');
let decoded = qs.parse(body, {
allowPrototypes: true,
decoder(value) {
// Convert numbers to numbers and bools to bools
if (/^(\d+|\d*\.\d+)$/.test(value)) {
return parseFloat(value);
}
let keywords = {
true: true,
false: false,
null: null
};
if (value in keywords) {
return keywords[value];
}
return decodeURIComponent(value);
}
});
if (resource === 'customers') {
if (!id) {
// Add default fields
decoded = {
object: 'customer',
subscriptions: {
type: 'list',
data: []
},
...decoded
};
}
}
if (resource === 'subscriptions') {
// Convert price to price object
if (Array.isArray(decoded.items)) {
const first = decoded.items[0];
if (first && typeof first.price === 'string') {
const price = this.#getData(this.prices, first.price)[1];
if (!price) {
return [400, {error: 'Invalid price ' + first.price}];
}
decoded.items = {
data: [
{
...first,
price
}
]
};
}
}
// Add default fields
if (!id) {
decoded = {
object: 'subscription',
cancel_at_period_end: false,
canceled_at: null,
current_period_end: (Date.now() + 1000 * 60 * 60 * 24 * 31) / 1000,
start_date: Math.floor(Date.now() / 1000),
status: 'active',
items: {
type: 'list',
data: []
},
...decoded
};
}
if (typeof decoded.customer === 'string') {
// Add customer to customer list
const customer = this.#getData(this.customers, decoded.customer)[1];
if (!customer) {
return [400, {error: 'Invalid customer ' + decoded.customer}];
}
customer.subscriptions.data.push(decoded);
}
}
if (!id) {
// create
decoded.id = `${resource.substr(0, 4)}_${this.#generateRandomId()}`;
arr.push(decoded);
return [200, decoded];
}
// Patch
const subscription = arr.find(c => c.id === id);
if (!subscription) {
return [404];
}
Object.assign(subscription, decoded);
return [200, subscription];
}
stub() {
nock('https://api.stripe.com')
.persist()
.get(/v1\/.*/)
.reply((uri) => {
const [match, resource, id] = uri.match(/\/?v1\/(\w+)\/?(\w+)/) || [null];
if (!match) {
return [500];
}
if (resource === 'setup_intents') {
return this.#getData(this.setupIntents, id);
}
if (resource === 'customers') {
return this.#getData(this.customers, id);
}
if (resource === 'subscriptions') {
return this.#getData(this.subscriptions, id);
}
if (resource === 'coupons') {
return this.#getData(this.coupons, id);
}
if (resource === 'payment_methods') {
return this.#getData(this.paymentMethods, id);
}
if (resource === 'prices') {
return this.#getData(this.prices, id);
}
if (resource === 'products') {
return this.#getData(this.products, id);
}
return [500];
});
nock('https://api.stripe.com')
.persist()
.post(/v1\/.*/)
.reply((uri, body) => {
const [match, resource, id] = uri.match(/\/?v1\/(\w+)(?:\/?(\w+)){0,2}/) || [null];
if (!match) {
return [500];
}
if (resource === 'payment_methods') {
return this.#postData(this.paymentMethods, id, body, resource);
}
if (resource === 'subscriptions') {
return this.#postData(this.subscriptions, id, body, resource);
}
if (resource === 'customers') {
return this.#postData(this.customers, id, body, resource);
}
if (resource === 'coupons') {
return this.#postData(this.coupons, id, body, resource);
}
if (resource === 'prices') {
return this.#postData(this.prices, id, body, resource);
}
if (resource === 'products') {
return this.#postData(this.products, id, body, resource);
}
return [500];
});
nock('https://api.stripe.com')
.persist()
.delete(/v1\/.*/)
.reply((uri) => {
const [match, resource, id] = uri.match(/\/?v1\/(\w+)(?:\/?(\w+)){0,2}/) || [null];
if (!match) {
return [500];
}
if (resource === 'subscriptions') {
return this.#postData(this.subscriptions, id, 'status=canceled', resource);
}
return [500];
});
}
async sendWebhook(event) {
/**
* @type {any}
*/
const webhookController = stripeService.webhookController;
await webhookController.handleEvent(event);
}
}
module.exports = StripeMocker;