API Testing Tutorials

A 10-part, hands-on API testing tutorial series — from HTTP fundamentals to full automation.

By SixQuality · API Testing

This is a practical, 10-part tutorial series that takes you from the fundamentals of HTTP all the way to automated API testing. It is designed to be followed in order, with each part building on the last. Work through them sequentially, or jump to the topic you need.

  1. HTTP Fundamentals for API Testing
  2. HTTP Methods (GET, POST, PUT, DELETE)
  3. HTTP Status Codes Explained
  4. Headers, Query & Path Parameters
  5. Working with JSON Request & Response
  6. API Authentication (Keys, OAuth 2.0, JWT)
  7. Your First Request in Postman
  8. Collections, Variables & Environments
  9. Assertions & Automating Tests in Postman
  10. API Automation with REST Assured & Robot Framework
Tutorial

1. HTTP Fundamentals for API Testing

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Tutorial

2. HTTP Methods (GET, POST, PUT, DELETE)

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Tutorial

3. HTTP Status Codes Explained

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Tutorial

4. Headers, Query & Path Parameters

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Tutorial

5. Working with JSON Request & Response

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Tutorial

6. API Authentication (Keys, OAuth 2.0, JWT)

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Tutorial

7. Your First Request in Postman

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Tutorial

8. Collections, Variables & Environments

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Tutorial

9. Assertions & Automating Tests in Postman

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Tutorial

10. API Automation with REST Assured & Robot Framework

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