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Intro to Manual and Automated API testing with Postman
Rating: 4.6 out of 5(564 ratings)
10,285 students

Intro to Manual and Automated API testing with Postman

The first step on the long, difficult and controversial path of API testing using Postman for Beginners
Created byMark Shrike, Viсtoria N
Last updated 11/2025
English
English [Auto],

What you'll learn

  • Detailed understanding of REST, REST architectural constraints, client-server architecture and HTTP request-response pair
  • Basic knowledge about RESTful APIs and JSON
  • Introduction to the manual API testing
  • Introduction to the Postman Automated API Testing

Course content

5 sections • 11 lectures • 1h 51m total length

  • What is the REST API?3:03

    Clarify the rest API definition and its architectural constraints using concrete examples like Spotify, Jira, and Swagger Pet Store, including http post requests and json bodies.

  • REST and REST Architectural Constraints13:16

    Explore representational state transfer and its six constraints for web APIs. Learn how client-server architecture, statelessness, cacheability, layered systems, code on demand, and a uniform interface enable restful services.

  • Client server architecture8:32

    Explore client-server architecture and how rest APIs enable services, detailing server and client roles, request-response flow, and examples like maps using geo data.

  • Anatomy of an HTTP Request17:46

    Learn the anatomy of an HTTP request by mastering URL structure, domain names, IP addresses, and path, with request methods like GET, POST, PUT, and DELETE to test REST APIs.

  • Anatomy of an HTTP Response4:35

    Identify the http response structure by focusing on the status code and response body, including the three-digit code, its class (like 2xx), and how 200 signals success.

Requirements

  • No prior specialized knowledge is required
  • No programming experience needed
  • Desire to learn APIs
  • Thirst for knowledge

Description

API testing is a very contradictory topic. And it happens that you worked for years as a Manual tester and never faced the APIs or had a need to test those. But it can change at any moment.

Let's imagine the scenario. You passed an interview at a new company. You are a good person and they are good people. They liked you and they liked you. Even more, they offered good money.

During the interview, they said that the project is very cool and that you already know everything to start work. That the project has excellent documentation and a cool team, and all SCRUM processes are perfectly implied.

Two weeks have passed. And it's your first working day at your new job. You receive a letter from the manager. He congratulated you and says that you were expected and advertised a lot. That you are a testing expert. And in the email, he sends the user story. He says that she should be tested tomorrow. But since you are an expert, it will not cause difficulties.

You are the expert. That is true. So you check the story.

And you do not understand a single word there. In the story, a lot of things have been mentioned some endpoints, base URLs, JSON body, HTTP response code, and CURL. And all of this is new to you. You have never worked on the API level. But do you need to finish testing by tomorrow? What are you going to do?

You are the expert!

You will test the story with the help of this course!

Even more, you will have time for a cup of coffee!

Who this course is for:

  • Manual testers who need to learn how to test APIs ASAP
  • People who can't imagine their life without REST APIs
  • People who love coffee

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