- A strong API Testing syllabus sequences HTTP fundamentals and Postman before RestAssured automation and security testing.
- Expect 17 modules: HTTP basics, Postman, authentication testing, RestAssured, performance, and CI/CD integration.
- Job-ready API testers validate schema, status codes, security, and performance, not just happy-path responses.
- Book a free Asmorix demo to match this syllabus to weekday or weekend batches in Chennai.
This API Testing course syllabus is a complete module checklist for learners who want to go from HTTP fundamentals and Postman to RestAssured automation, security testing, and CI/CD integration, with a real-time project focus. Use it to compare institutes, plan self-study, or map labs before you join API Testing Training in Chennai. Related paths include Software Testing Course Syllabus, Selenium Course Syllabus, and RPA Course Syllabus.
A complete API Testing syllabus should cover HTTP fundamentals, Postman, authentication testing, RestAssured automation, performance, and security testing — not manual happy-path checks alone.
Quick Overview
| Item | Details |
|---|---|
| Course focus | Manual and automated API testing with Postman and RestAssured |
| Modules | 17 core modules + real-time project guidance |
| Level | Beginner to job-ready API/SDET tester |
| Who it is for | Manual testers upskilling, freshers, and developers moving into QA automation |
| Key outcomes | Design Postman collections, automate with RestAssured, and validate security and performance |
| Prerequisites | Basic computer literacy; Java basics help for RestAssured modules |
| Training options | Classroom and live online batches in Chennai with placement support |
Who Should Follow This API Testing Syllabus?
This API Testing syllabus suits manual testers who want automation skills, freshers targeting QA automation roles, and developers who want to validate their own backend services thoroughly. Absolute beginners can start at Module 1 with Postman. If you already know Java, you can move faster into RestAssured automation.
Module 1: Introduction to APIs & API Testing
- What an API is and types: REST, SOAP, GraphQL
- API testing versus UI testing
- HTTP protocol basics: methods, status codes, headers
- API testing tools landscape: Postman, RestAssured, SoapUI
- Career paths in API and QA automation
Module 2: HTTP Fundamentals Deep Dive
- Request and response structure
- Headers: content-type, authorization, custom headers
- Status code categories and meanings
- Query params versus path params versus body
- Idempotency and safe methods
Module 3: Postman Fundamentals
- Creating and organizing collections
- Sending GET, POST, PUT, and DELETE requests
- Environment and global variables
- Pre-request scripts basics
- Postman console for debugging
Module 4: Postman Advanced Techniques
- Writing test scripts with Chai assertions
- Dynamic variables and data-driven collection runs
- Postman Runner and Newman CLI
- Mock servers in Postman
- Postman monitors for scheduled checks
Module 5: REST API Testing Concepts
- Validating response schema
- Validating status codes and response time
- Content negotiation testing
- Pagination and filtering testing
- Testing idempotent versus non-idempotent operations
Module 6: Authentication & Authorization Testing
- Basic auth, API keys, and Bearer tokens
- OAuth2 flow testing
- JWT structure and validation
- Testing role-based access control
- Session versus token-based auth testing
Broken object level authorization is one of the most common real-world API defects. Always test what happens when a user requests data belonging to someone else.
Module 7: RestAssured Framework (Java)
- RestAssured setup and dependencies
- Given-When-Then syntax
- Serialization and deserialization with POJOs
- Extracting and validating JSON response with JsonPath
- Chaining requests with extracted data
Module 8: Advanced RestAssured & Framework Design
- Request and response specification builders
- Handling headers, cookies, and multipart requests
- Data-driven API tests with TestNG DataProvider
- Combining RestAssured with Cucumber for BDD
- Building a reusable API automation framework
Module 9: SOAP Web Services Testing
- WSDL structure basics
- SoapUI for SOAP requests
- XML request and response validation
- SOAP versus REST comparison
- SOAP fault handling
Module 10: GraphQL API Testing
- GraphQL query and mutation basics
- Testing GraphQL endpoints with Postman
- Schema validation for GraphQL
- Common GraphQL testing pitfalls
Module 11: API Performance Testing
- Load testing APIs with JMeter
- Analyzing throughput and response time
- Identifying bottlenecks under load
- Correlation and parameterization for API load tests
- Basic capacity planning concepts
Module 12: API Security Testing
- OWASP API Security Top 10 overview
- Testing for broken authentication
- Injection testing basics for APIs
- Rate limiting and throttling validation
- Sensitive data exposure checks
Security testing is no longer optional for API roles. Even junior QA interviews now ask about rate limiting, token expiry, and injection basics.
Module 13: Contract Testing & Mocking
- Consumer-driven contract testing concepts with Pact
- Mocking microservice dependencies
- API virtualization basics
- Schema versioning strategies
- Backward compatibility testing
Module 14: Database Validation for API Testing
- Validating API responses against database records
- Writing SQL queries for backend verification
- Data setup and teardown for API tests
- Handling test data isolation
Module 15: CI/CD Integration for API Tests
- Integrating Newman and RestAssured suites with Jenkins
- Running API tests in pipelines
- Reporting with Allure or ExtentReports
- Scheduling regression API suites
- Shift-left API testing practices
Module 16: Microservices Testing Strategy
- Testing pyramid for microservices
- End-to-end versus contract versus component testing
- Service virtualization for dependent services
- Testing asynchronous and event-driven APIs
Module 17: Real-Time Project
Capstone delivery follows a structured project flow used in placement-oriented API testing training.
- API documentation review and test plan
- Postman collection design
- Authentication strategy mapping
Phase 1
- RestAssured automation framework setup
- Authentication and authorization test cases
- Data-driven test implementation
Phase 2
- Database validation layer
- Performance checks with JMeter
- Security test cases for common vulnerabilities
Phase 3
- CI/CD integration with Jenkins
- Reporting and dashboard setup
- Demo walkthrough and resume bullet practice
How to Use This Syllabus
Bring this API Testing course syllabus to counseling and ask which labs map to each module, which APIs you will practice on, and how many mentor review cycles you get on your automation framework. Confirm coverage for authentication testing, RestAssured, and security testing before you enroll. For batch timings, fees, and placement-oriented API testing training in Chennai, visit API Testing Training in Chennai with Placement.
Related Courses & Syllabus Guides
After API Testing, many learners broaden their QA automation skills with these Asmorix paths:
- API Testing Training in Chennai — classroom and live online batches with placement support
- Software Testing Course Syllabus — manual testing foundation
- Selenium Course Syllabus — UI automation companion skill
- RPA Course Syllabus — adjacent automation career path
Frequently Asked Questions
What does the API Testing course syllabus cover?
It covers HTTP fundamentals, Postman manual and advanced testing, authentication and authorization testing, RestAssured automation, SOAP and GraphQL orientation, performance and security testing, and CI/CD integration with a real-time project.
How many modules are in this API Testing syllabus?
This reference plan has 17 modules plus a phased real-time project, covering both manual Postman testing and RestAssured automation.
Do I need Java to learn API testing?
Postman-based manual API testing does not require coding. RestAssured automation modules use Java, so basic programming logic helps once you reach that stage.
Is authentication testing covered?
Yes. Basic auth, API keys, Bearer tokens, OAuth2 flows, and JWT validation are covered as a dedicated module, since broken authentication is a common real-world defect area.
Is performance testing part of API testing training?
Yes, at an introductory level using JMeter for load testing APIs, covering throughput, response time, and basic bottleneck identification.
What projects should be part of API testing training?
A RestAssured automation framework covering authentication, data-driven tests, and database validation, integrated with a CI/CD pipeline, is a strong capstone project.
Is GraphQL testing included?
Yes, as an advanced orientation module covering query and mutation testing, schema validation, and common GraphQL testing pitfalls.
Where can I join API Testing training in Chennai?
Asmorix offers mentor-led API Testing training with placement support. Book a free demo to match this syllabus to your background and preferred batch timing.