Stripe Recurring Billing Part 3 : Integration Testing using Capybara
Jeff Thomas has written a blog post on Integration tests with Stripe. I followed his instructions, but I was not able to get it working. So, I had to use just Capybara with RSpec. In this article you will learn how to check the API credentials using a rake task and how to write integration tests using Capybara for testing the subscription feature using Stripe API.
Here is a rake task that you can use to make sure that the Stripe credentials are defined.
namespace :stripe do task :credentials_check => :environment do message = <<ERROR Stripe Credentials is not set. Define the following Stripe Environment variables. export STRIPE_PUBLISHABLE_KEY='pk_test_your publishable key' export STRIPE_SECRET_KEY='sk_test_your secret key' Check config/initializers/stripe.rb for more details on this works. ERROR if Rails.configuration.stripe[:secret_key].blank? puts message else begin Stripe::Account.retrieve puts "Stripe Secret Key is defined properly" rescue Stripe::AuthenticationError => e puts "Stripe Secret Key is not correct" end end end end
Ideally, the API should provide something similar to ping to verify the credentials. Unfortunately, there is no API for credentials check. The closest thing that I could find is retrieving the Stripe account details for the website owner who wants to charge their customers using Stripe API.
Integration Tests using Feature Specs
Add the following gems to the Gemfile.
group :test do gem 'capybara' gem 'selenium-webdriver' end
Create a features directory under spec folder. Create a file
subscribe_spec.rb under the features directory with the following contents.
require 'rails_helper' feature 'Subscription' do scenario 'Customer subscribes to Gold plan', js: true do visit "/subscriptions/new" fill_in "Card Number", with: '4242424242424242' page.select '10', from: "card_month" page.select '2029', from: 'card_year' click_button 'Subscribe Me' expect(page).to have_content('You have been subscribed to Gold.') end end
Run the feature spec.
If the feature tests are not running on the browser, you can check the default driver in rails console:
$rails c test Loading test environment (Rails 4.2.5) > Capybara.default_driver => :rack_test
You can change it to selenium, poltergeist or anything else in
# Default driver is :rack_test Capybara.default_driver = :selenium
Now the tests will run on the browser using the selenium-webdriver. You can download the entire source code for this project from bitbucket:
Ace the Technical Interview
- Easily find the gaps in your knowledge
- Get customized lessons based on where you are
- Take consistent action everyday
- Builtin accountability to keep you on track
- You will solve bigger problems over time
- Get the job of your dreams
Take the 30 Day Coding Skills Challenge
Gain confidence to attend the interview