REST Assured API Testing Tutorial for Beginners (Java) | Build Your First Test

Published: 14 July 2026
on channel: Mitchell Agoma

Learn REST Assured API testing with Java from scratch and build your first automated API tests step by step. This beginner tutorial covers client/server and three-layer architecture, API contracts, HTTP methods and status codes, JSON, Maven setup, GET and POST requests, body/header/response-time assertions, path parameters, and JSON request bodies.

This corrected edition features a professional English-accent voice-over generated with ElevenLabs.

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Chapters
00:00 Hook + roadmap
02:18 How web applications work
07:46 What is an API?
11:05 What is API testing?
14:41 HTTP essentials
19:29 Project setup
23:51 Your first GET test
27:23 Real assertions
30:46 Your first POST
34:05 Recap
35:27 Interview practice
36:36 SDET Coach

REST Assured version note: this lesson uses the pinned project version shown in the video so the code stays reproducible.

#APITesting #RestAssured #SDET #SoftwareTesting #TestAutomation #Java

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