Systems | Development | Analytics | API | Testing

Retail media is the topic everyone is talking about in the retail and consumer goods industry. And for good reason: the $45 billion U.S. retail media market is surging as retailers capitalize on the consumer shift to ecommerce while offering advertisers access to their unique audiences and data insights. Many retailers developed their own retail media networks over the last few years, from digital marketplaces and department stores to commerce intermediaries.

When writing tests in Rails, you should avoid repetition and have the right amount of tests to satisfy your use case. This article will introduce you to shoulda-matchers with RSpec for testing functionality in Rails. At the end of the post, you should feel confident about using shoulda-matchers in your Rails application. Let's get going!

In this tutorial, we will build a simple Flask app that is primed and ready to deploy to Heroku. Once the bare bones of the app are built, we will guide you through the setup process on GitHub and Heroku so that you can start making automatic deploys in no time. But before we dive straight into the code, why choose Flask and Heroku in the first place?