Introduction to testing SvelteKit applications

SvelteKit, a framework for building high-performance web apps, extends the capabilities of the Svelte framework, and this article focuses on testing applications built with it. It guides readers through the process of creating a SvelteKit application and adding a component to fetch and display gift card data from Reloadly. The tutorial then delves into unit testing using Jest and the Svelte Testing Library, where individual components are tested for functionality. Instructions are provided for setting up the test environment, including necessary dependencies and configurations. The article also covers end-to-end testing using Cypress, a JavaScript-based testing framework, to simulate real-world scenarios and ensure the application's reliability. It emphasizes the importance of integrated testing in verifying the expected functionality of applications before deployment, highlighting the straightforward nature of testing in SvelteKit.