Manual and automation API testing for Beginners with Postman

Name: Manual and automation API testing for Beginners with Postman
Rating: 4.5 (248 reviews)

Get familiar with api testing and rest api and learn how manual api testing and automation api testing with postman

Created byMark Shrike, Viсtoria N

Last updated 11/2025

English

What you'll learn

Ready to perform Manual API testing
Ready to perform Automated testing with Postman
Detailed understanding of REST, REST architectural constraints, client-server architecture and HTTP request-response pair
Basic knowledge about RESTful APIs and JSON
Testing of the POST, GET, PUT, DELETE requests (CRUD operations)
Basic knowledge of Postman features: Using variables, Using snippets, Using the Collection Runner, Scripting in Postman etc.

Course content

7 sections • 49 lectures • 5h 18m total length

1.0 Manual and automated API testing for Beginners with Postman. Intro3:02
1.1 What is an API - The explanation In plain English21:02
1.2 What is the REST API?3:03
1.3 REST and REST Architectural Constraints13:16
Learn how the rest architectural style guides web api design, covering client-server architecture, statelessness, caching, layered systems, uniform interfaces, and code on demand.
1.4 Client server architecture8:32
1.5 Anatomy of an HTTP Request17:46
1.6 Anatomy of an HTTP Response4:16
1.7 How Does The World Wide Web Work3:02
1.8 How does the REST API work3:51
Discover how a rest api works with Postman, sending get and put requests, identifying resources by paths, and receiving json data with status codes.

2.0 A simple API testing approach. Intro3:39
Discover a simple API testing approach using Postman, importing a Postman collection and exploring folders to send valid requests and receive valid responses.
2.1 A simple API testing approach2:40
Apply a simple three-step API testing approach with Postman: send a valid request, verify status code, response structure, and values, then perform functional and nonfunctional testing.
2.2 Step 1. Send the valid request and receive the valid response13:14
Master the first API testing step: send a valid request and receive a valid response using Postman and Swagger, while leveraging team input when documentation is lacking.
2.3 Step 2. Write and run Three Happy path test cases10:45
Write and run three happy path test cases for a Postman API, validating the response code, response body structure, and values through manual checks.
2.4 testing GET9:40
2.5 testing PUT and DELETE7:40
2.6 The Answer. Part 111:32
2.7 The Answer. Part 212:55
2. Resources0:05

3.0 The Postman tutorials. Intro3:56
3.0 Postman Fundamentals for Testers12:53
3.1 Using variables. Part 111:25
3.2 Using variables. Part 23:36
Declare and assign an id variable from the post response for the path parameter. Update base url and version with variables, then run the end-to-end post, get, put, delete sequence.
3.3 Pre-request Script7:13
Explore Postman's pre-request script to set the ID variable to null per request, using environment variables and snippets to streamline post and get requests.
3.4 "Hello, World!"9:28
3.5 Tests3:50
3.6 Parameterization4:05
Learn to parameterize APIs in Postman by configuring environment variables for the pet store collection, using pre-request and test scripts to auto generate IDs and apply them across all endpoints.
3. Resources0:34

4.0 Automated testing with Postman. Intro3:00
Learn automated API testing with Postman by importing collections and environments, running tests with the collection runner, and troubleshooting id value issues while following a practical, non-step-by-step approach.
4.1 The Status Code is valid5:10
4.2 The Response Body Structure is valid8:57
4.3 The Response Body Values are valid. Part 110:25
Automate the response body checks in Postman by validating the existence of fields, values equal to those sent, and empty arrays.
4.4 The Response Body Values are valid. Part 210:44
Automates validating all response body values in Postman by comparing category id, name, and status to the request data, and checks empty photo URLs and tags arrays.
4.5 Three Happy path test cases GET8:05
4.6 The Game Changer (the Runner)8:05

5.0 Step 3. Perform functional and non-functional testing. Intro1:47
4. Resources0:38
5.1 Warm-up8:24
Perform functional and non-functional API testing with Postman using the Chuck Norris API warm-up. Validate 200 responses and ensure consecutive jokes differ, using automated scripts that store and compare jokes.
5.2 Something like sorting7:22
Perform manual and functional API testing in Postman on the Chuck Norris Jokes API, validating 200 responses, array structures, and non-empty results, then implement a sorting-based automation check.
5.3 Importing data files7:54
5.4 The Response Body Structure and values. Again...6:35
Demonstrate functional and non-functional testing of a rest API with Postman. Validate the response body structure and values for the Chuck Norris jokes endpoint, including totals, arrays, and data types.
5.5 Array length2:14
Master manual and automation api testing with Postman by validating array length in the Chuck Norris jokes api. Learn to script json responses, log results, and verify total equals length.
5.6 Search4:27
Perform functional and non-functional testing of Chuck Norris jokes API search, showing how query parameters and trailing spaces affect results and how to validate all returned jokes contain the term.
5.7 Dynamic variables3:01
5.8 Sample Data Generation7:40
5.9 Request And Response bodies to JSON1:26
Reuse a post call in Postman to test request and response bodies as JSON, streamlining functional and non functional testing by organizing scripts in a dedicated collection.
5.10 Number to String to Number3:30
5. Resources0:45

Requirements

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

Description

This course is about "API testing". Both manual and automated API testing with Postman. And this course is for beginners and for people who want to recall basic knowledge and API testing skills. API testing is a complex topic, and I will try to make it as easy as possible, but it still will be a complex topic. It is also a controversial topic. No matter how many people you ask how to test the API, they all have their own approach and their own way of testing. In some things they are right, in some things they are wrong. And so, getting acquainted with different approaches and ways, we create our own unique approach and way. Which also is right, and wrong. In this course, you will find my way of sailing in this restless, boundless, and stormy ocean of API testing. I hope it will help you find your own way.

In this course, you will have 5 baby steps.

1st - learn theory.

2nd - learn what manual API testing looks like. I will imitate the user stories and real project experience so it will be easier to understand.

3rd - improve your API testing skills with proper use of Postman features.

4th - automated API testing with Postman.

5th - examples of manual and automated API testing.

Happy sailing!

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

Manual and automation API testing for Beginners with Postman

What you'll learn

Explore related topics

Course content

API testing theory9 lectures • 1hr 18min

A simple API testing approach9 lectures • 1hr 12min

The Postman tutorials9 lectures • 57min

Coffee Break1 lecture • 1min

Automated testing with Postman7 lectures • 54min

Step 3. Perform functional and non-functional testing13 lectures • 56min

Bonus lecture1 lecture • 1min

Requirements

Description

Who this course is for: