Learn API Testing using Postman, SoapUI & RestAssured
What you'll learn
- You will be able to understand what the Rest API's are, and their functionality.
- After completing this course you can start working on Rest API Testing Projects
- You will learn how to build frame works in Postman and RestAssured
- You will learn CI & CD Integration with Postman & RestAssured
Requirements
- Software Testing Concepts
- Java Programming Basics
- TestNG
Description
Course Overview: Mastering Back-End Testing and API Automation
In today's digital landscape, web applications heavily rely on seamless communication through web services. The dominant architecture, Representational State Transfer (REST), has become a cornerstone in modern web service development. This course aims to transform you into a proficient back-end testing expert, equipping you with the skills to navigate the evolving IT industry landscape.
Module 1: Introduction to API Testing
Client-Server Architecture
Understanding the Basic Architecture
Roles of Client and Server
API Basics
What is an API?
Why API Testing is Needed?
Types of APIs
SOAP vs. REST
Understanding Web Services
API vs. Web Service
REST API Fundamentals
REST API Methods (GET, POST, PUT, DELETE)
HTTP vs. HTTPS
HTTP Status Codes
Module 2: API Testing with Postman
Postman Introduction
Postman Installation
Creating Workspace
Creating Collections
Creating HTTP Requests (GET, POST, PUT, DELETE)
Saving & Editing Requests
Operations on Collections
Response Validation
Status Codes
Cookies
Headers
Response Body
Schema
Exporting & Importing Collections
Creating Dummy APIs for API Testing
NodeJS Installation
JSON-Server Installation
JavaScript Object Notation (JSON) & JSON Path
What is JSON?
Understanding JSON Object & JSON Array
JSON Path
Validating Responses (Chai Assertions)
Testing Status Codes
Testing Headers
Testing Cookies
Testing Response Time
Testing Response Body
Scripts in Postman
Pre-request Scripts
Test Scripts (Post Response Scripts)
JSON Schema Validation
Working with Variables
Global Variables
Collection Variables
Environment Variables
Local Variables
Data Variables
Set, Get & Unset Variables with Scripts
Postman Console
Chaining Requests
Customize Collection Run Order(Work flow)
Working with Data Variables/External Variables
Data-Driven Testing
Using JSON Files
Using CSV Files
File Upload & Download API Requests
Authorization Types
Basic Authorization
Digest Authorization
API Key
Bearer Token
OAuth2
Project Work -Online Store
API testing Reference documents
Writing API Test Cases
Creating Collections & Adding Requests
Adding Scripts (Chai Assertions)
Running Collections Manually
Scheduling Runs
Newman CLI
Install Newman
Install newman-reporter-html for Reporting
Exporting and Sharing Collections from Postman
Run Collections Locally via Command Prompt
Push Collections to GitHub and Run in Jenkins
Postman CLI
Install Postman CLI
Use Postman CLI to Run a Collection from Command Line
Set Up GitHub Actions with Postman CLI to Run Collections in CI/CD Pipeline
Documenting APIs
Create Public Documentation
Write Markdown Descriptions at Request, Folder, or Collection Level
Embed "Run in Postman" Button with Documentation
Preview Docs Before Publishing
Publish to API Network
Swagger
cURL
Mocking APIs
Set Up Mock Servers
Create Dynamic Mock Responses
Performance Testing
Run a performance test
Types of Load profiles in Postman
View performance test metrics
Inject data into virtual users
GraphQL
What is GraphQL?
GraphQL vs REST
GraphQL Core Concepts
GraphQL Queries - Fetching data
GraphQL Mutations - Writing data
GraphQL Subscriptions - Realtime updates
Create GraphQL requests in Postman
Postman GraphQL interface
Module 3: API Testing with RestAssured
Introduction to RestAssured
Overview and Importance
Setting up a RestAssured Maven Project
Install JDK & Eclipse IDE
Creating maven Project & Add dependencies
Configuring IDE and TestNG
Writing API Automation Scripts
HTTP Methods: GET, POST, PUT, DELETE
Different ways to Create Request Body/Payload
Using HashMap
Using org.json library
Using POJO Class
Using External JSON File
Handling Parameters
Path Parameters
Query Parameters
Headers and Cookies
Authentication Types
Basic Authentication
Digest Authentication
Preemptive Authentication
OAuth 1 and OAuth 2
File Upload & Download (Form parameters)
Parsing Response Body
Parsing JSON and XML Response body
JSON Schema and XML Schema/XSD Validations
Advanced RestAssured Features
API Chaining
Serialization and Deserialization
Request and Response Specification Builders
Root Path
Logging
RestAssured with GraphQL
Handling GraphQL Queries
Handling GraphQL Mutations
Framework Development
Building a RestAssured Framework
Creating Maven Project & Folder Structure
API End Point(Routes)
Understanding Schemas & Models
Creating of POJO Classes
Creating Payloads
Creating Configuration & Test Data files
Creating API Tests and add validations
Generating Extent & Allure Reports
Running Tests using TestNG(Serial & Parallel mode)
CI & CD
Working with Git & Github
Integration with Jenkins
Bonus Lectures:
API Testing with SoapUI & Ready API
Who this course is for:
- Beginners, Fresh graduates,Manual Testers and Automation Test Engineers
Instructor
As a passionate Tech Educator, Trainer, and QA Specialist, I bring over 19 years of rich experience in the IT industry — with 16+ years dedicated to training and mentoring professionals across the globe. My mission is to bridge the skills gap in software testing and automation by delivering high-impact, industry-relevant learning experiences.
With a solid foundation in Software Development and Quality Assurance, I specialize in designing and delivering comprehensive training programs that enable individuals and teams to upskill and stay competitive in today’s rapidly evolving tech landscape.
Key Highlights:
Instructor to 200,000+ students worldwide through 17+ bestselling courses on Udemy.
YouTube Content Creator (SDET-QA) with 775K+ subscribers — sharing tutorials, insights, and tool walkthroughs that have helped thousands learn practical QA skills.
Corporate Trainer for Selenium, Cypress, Playwright, API Testing, ETL, Big Data, and AI Testing, with hands-on coverage of real-world tools and frameworks.
Deep expertise in automation frameworks and QA methodologies, with proficiency in Selenium WebDriver, TestNG, Cucumber, Appium, Postman, JMeter, and REST Assured.
Strong programming foundation in Java, Python, JavaScript, and TypeScript.
Experience working with tools and practices across web, mobile, API testing, as well as CI/CD pipelines and DevOps integration.
Strong focus on JavaScript-based automation frameworks for scalable, maintainable, and high-performance solutions.
As an Educator:
I create engaging, hands-on learning content — from course design and video production to real-world assignments and assessments.
I prioritize clarity, practicality, and continuous updates, ensuring learners are equipped with the latest tools and techniques.
I actively foster a supportive learning community via forums, Q&A, and mentorship.