Add infrastructure for mocked tests (#1684)

* Add infrastructure for mocked tests

* build

src/stripe.common.ts

@@ -38,7 +38,15 @@ import CryptoProvider = require('./crypto/CryptoProvider');
 import PlatformFunctions = require('./platform/PlatformFunctions');
 import createWebhooks = require('./Webhooks');
 
-function createStripe(platformFunctions: PlatformFunctions): typeof Stripe {
+type RequestSenderFactory = (stripe: StripeObject) => RequestSender;
+
+const defaultRequestSenderFactory: RequestSenderFactory = (stripe) =>
+ new RequestSender(stripe, StripeResource.MAX_BUFFERED_REQUEST_METRICS);
+
+function createStripe(
+ platformFunctions: PlatformFunctions,
+ requestSender: RequestSenderFactory = defaultRequestSenderFactory
+): typeof Stripe {
  Stripe.PACKAGE_VERSION = require('../package.json').version;
  Stripe.USER_AGENT = {
  bindings_version: Stripe.PACKAGE_VERSION,
@@ -137,10 +145,8 @@ function createStripe(platformFunctions: PlatformFunctions): typeof Stripe {
  this._prevRequestMetrics = [];
  this._enableTelemetry = props.telemetry !== false;
 
- this._requestSender = new RequestSender(
- this,
- Stripe.StripeResource.MAX_BUFFERED_REQUEST_METRICS
- );
+ this._requestSender = requestSender(this);
+
  // Expose StripeResource on the instance too
  // @ts-ignore
  this.StripeResource = Stripe.StripeResource;

testUtils/index.js

@@ -11,6 +11,8 @@ const http = require('http');
 const CryptoProvider = require('../lib/crypto/CryptoProvider');
 const NodePlatformFunctions = require('../lib/platform/NodePlatformFunctions');
 const RequestSender = require('../lib/RequestSender');
+const {createStripe} = require('../lib/stripe.common');
+const stripe = require('../lib/stripe.node');
 
 const testingHttpAgent = new http.Agent({keepAlive: false});
 
@@ -97,15 +99,33 @@ const utils = (module.exports = {
 
  // Provide a testable stripe instance
  // That is, with mock-requests built in and hookable
- const stripe = require('../lib/stripe.node');
- const stripeInstance = stripe('fakeAuthToken', config);
-
- stripeInstance._requestSender = new MockRequestSender(
- stripeInstance,
- stripe.StripeResource.MAX_BUFFERED_REQUEST_METRICS
+ const stripeFactory = createStripe(
+ new NodePlatformFunctions(),
+ (stripeInstance) =>
+ new MockRequestSender(
+ stripeInstance,
+ stripe.StripeResource.MAX_BUFFERED_REQUEST_METRICS
+ )
  );
+ return stripeFactory('fakeAuthToken', config);
+ },
 
- return stripeInstance;
+ createMockClient: (requests) => {
+ return utils.getMockStripe(
+ {},
+ (method, host, path, _4, _5, _6, callback) => {
+ const request = requests.find(
+ (r) => r.method == method && r.path == path
+ );
+ if (!request) {
+ throw new Error(
+ `Unable to find a mock request for ${method} ${path}`
+ );
+ }
+
+ callback(null, Promise.resolve(JSON.parse(request.response)));
+ }
+ );
  },
 
  getSpyableStripe: (config) => {