API Testing Masterclass: Postman, AI, Supertest & CI/CD

Build real API testing skills that get you hired. You'll create an Express API, test it with Postman, Swagger, and Playwright, and automate everything in GitHub Actions CI. Walk away with a portfolio-ready project and the hands-on skills hiring manag

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Video

Course curriculum

1. What You Will Learn
2. Required Tools
1. What Is an API
2. REST VS SOAP
3. REST Concepts
4. Routes
5. Query Params
6. Body Payloads
7. JSON
8. JSON Data Practice
9. Headers
10. Methods
11. Status Codes
12. Status Code Reference
13. CRUD Operations and Data Flow
1. APIs Across the Stack
2. Frontend API Consumption
1. Postman Updates
2. Introduction to Postman
3. Workspace and Collection Setup
4. Building Requests for All Endpoints
5. Variables, Environments, and Data
6. Exporting Collections
1. Project Setup and Structure
2. Creating Base Routes
3. Implementing GET, POST, PUT, DELETE
4. Error Handling and Status Codes
5. In Memory Data Store
6. Adding Swagger UI to Express
1. Importing an OpenAPI Spec
2. Writing Your First Postman Test Script
3. Chaining Requests With Collection Variables
4. Environment Setup
5. Negative Testing and Edge Cases
6. Pre Request Scripts
7. Running a Collection With the Collection Runner
8. Data-Driven Testing With a CSV File
9. Postman Flows
10. Exporting Collections and Using Newman
11. Mocking Requests
1. Test App Setup
2. Dev Tools Network Tab
3. Inspecting Frontend-to-API Interactions
4. Working with HAR Files for Debugging
5. Executing Requests with Fetch
6. Filtering and Searching for Requests
7. URL encoding
1. What Is Swagger
2. Navigating the Swagger UI Interface
3. Testing GET Endpoints in Swagger UI
4. Testing the POST Endpoint in Swagger UI
5. Testing the PUT Endpoint in Swagger UI
6. Testing the DELETE Endpoint in Swagger UI
7. Negative Testing and Edge Cases Through Swagger UI
8. Reading the Raw OpenAPI Spec
1. Common API Vulnerabilities
2. Exploring Common API Vulnerabilities
3. Tools and Techniques for Basic Security Checks
4. Basic Security Tools
5. Authentication vs Authorization
6. Testing Authentication and Authorization
7. Input Validation and Sanitization
8. Testing Input Validation and Sanitization
9. Rate Limiting and Throttling Concepts
10. Testing Rate Limiting
11. How to Test Security at the API Layer
12. Exercise: Create an API Smoke Test
1. Notes on this section
2. curl Fundamentals and Setup
3. Making Requests and Inspecting Responses
4. Sending Data to APIs
1. Setup and Your First Supertest Test
2. Testing GET Endpoints
3. Testing POST, PUT, PATCH, and DELETE Endpoints
4. Response Body Validation and Schema Checks
5. Negative Testing and Error Handling
6. Chaining Requests and Authentication Flows
7. Organizing Test Suites and Reports
1. Exploring AI for API Testing with Claude
2. Generating Test Cases with Claude
3. Writing Tests from Natural Language with Claude
4. Generating Realistic Test Data with Claude
5. Detecting Defects Automatically with Claude
6. Build Your Full AI-Enhanced Test Suite
1. Running API Tests in CI With GitHub Actions
1. What is GraphQL
2. GraphQL Query Anatomy
3. Reading the GraphQL Schema
4. Setting Up Your GraphQL Testing Environment
5. Writing and Testing GraphQL Queries
6. Testing GraphQL Mutations
7. Error Handling and Validation Testing
1. Introduction to SOAP APIs
2. Exploring WSDL and Making Your First SOAP Request
3. Testing CRUD Operations
4. Testing Authentication and Security
5. Error Handling and Data Validation

About this course

$19.99
97 lessons
7.5 hours of video content

Build real API skills, grow your career, and get hired faster

Enroll today

What will I learn in this course?

How APIs work, including REST concepts, routes, methods, status codes, and JSON payloads
How to build a complete Express API with multiple CRUD endpoints
How to manually test endpoints using curl, Postman, and Swagger
How to validate status codes, headers, query params, and request bodies
How to design positive, negative, and error path tests
How to automate API testing using Playwright and JavaScript
How to build reusable API clients, fixtures, and test data flows
How to structure and scale an automated API test suite
How to handle authentication and environment variables in tests
How to integrate API tests into GitHub Actions for continuous integration

Instructor(s)

Glitch IT System

QA Architect

[email protected]

I’m a senior QA engineer with over 15 years of experience building QA teams. My experience includes software testing of web and mobile apps, test automation, and a bit of front-end web and mobile development. I want to share my knowledge with you so that you can be successful in your career and help your teams produce outstanding applications.

FAQ

Do I get a course completion certificate?

Yes! Once you complete the course, simply request your certificate, and we'll send it over. It's yours to share on LinkedIn or add to your resume to showcase your new skills.
What is the refund policy?

All sales are final. However, if you request a refund within 30 days of purchase and have completed less than 51% of the course, we'll issue a full refund—no questions asked.