Beginner's Guide to API Testing in Java Using Rest Assured and a Harry Potter API

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A developer tutorial on DEV Community walks beginners through API testing in Java using the Rest Assured library, requiring no prior experience with the framework. The guide uses a free Harry Potter-themed mock REST API hosted at funapi.dev, covering houses, students, and spells, to make the learning process more engaging. Readers learn to send GET and POST requests, validate status codes and JSON response bodies, use query parameters, and handle Bearer token authentication. The tutorial requires JDK 11 or newer, Maven or Gradle, and an IDE of choice, with an estimated completion time of around 30 minutes. The mock API is part of a broader sandbox platform called Fun API Playground, which also offers Star Wars, Pokémon, and fake banking endpoints for further practice.

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