Free ebook on API testing fundamentals, from test design and Postman to CI/CD automation, coverage, and performance testing.
Free ebook + audiobook content
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Definition and Importance of API Testing
+ Exercise: What is the primary focus of API testing? 4 minutes
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Types of API Testing
+ Exercise: Which type of API testing focuses on assessing the interaction between multiple APIs or an API and its clients? 4 minutes
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API Testing vs. Unit Testing
+ Exercise: What is the main focus of Unit Testing? 4 minutes
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Identifying Test Scenarios
+ Exercise: What is a crucial step in designing thorough API test cases? 3 minutes
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Defining Test Objectives and Criteria
+ Exercise: What is the importance of defining test objectives and criteria in API testing? 3 minutes
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Writing Test Cases with Example Inputs and Outputs
+ Exercise: What is a common non-existent HTTP status code in API test cases? 4 minutes
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Introduction to Postman
+ Exercise: What is one of the standout features of Postman for API testing? 4 minutes
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Exploring SoapUI
+ Exercise: What is a key advantage of using SoapUI for API testing? 4 minutes
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Working with REST Assured
+ Exercise: What is a primary advantage of using REST Assured in Java-based projects? 5 minutes
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Utilizing Swagger for API Documentation
+ Exercise: What is the primary function of Swagger Editor in the Swagger ecosystem? 4 minutes
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Integrating API Tests in CI/CD Pipelines
+ Exercise: What is a key benefit of integrating API tests into CI/CD pipelines? 4 minutes
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Automating API Testing
+ Exercise: Which is NOT a benefit of automating API testing in a CI pipeline? 4 minutes
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Using Jenkins for Continuous Integration
+ Exercise: What is the primary function of Jenkins in software development? 4 minutes
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Ensuring Test Coverage and Depth
+ Exercise: Which aspect of test coverage focuses on ensuring all possible execution paths in the code are tested? 3 minutes
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Scalability and Maintainability in API Tests
+ Exercise: What does scalability in API testing primarily refer to? 4 minutes
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Performance Testing and Load Handling
+ Exercise: What is one key practice for efficient API performance testing? 3 minutes
About the free ebook with audio
API Testing Fundamentals: Ensuring Reliable Integration and Performance
This free ebook introduces API testing as a practical discipline for verifying that applications exchange data correctly, securely, and reliably. Learn how to examine requests, responses, status codes, headers, authentication, error handling, and data validation across service boundaries.
Build confidence in connected systems
APIs power modern web, mobile, and cloud applications. Effective testing helps detect integration defects before they affect users, including invalid payloads, unexpected response formats, authorization failures, and weak handling of edge cases.
Design meaningful API tests
Explore how to identify realistic test scenarios, define measurable objectives, and write test cases using clear inputs and expected outputs. The ebook explains the distinction between API and unit testing, helping teams select the right test level for each risk.
Use popular API testing tools
Practice the core workflows supported by Postman, SoapUI, REST Assured, and Swagger-based documentation. Discover how these tools support manual exploration, repeatable checks, documentation-driven testing, and automated test suites.
Automate for delivery and scale
Learn how API tests fit into CI/CD pipelines and how Jenkins can provide rapid feedback on every change. The ebook also covers maintaining useful test coverage, structuring tests for long-term maintainability, and assessing API behavior under load.
What you will gain
- A practical framework for validating API contracts and behavior
- Methods for creating clear, reusable test cases
- Guidance for automation and continuous integration
- Awareness of performance, scalability, and reliability risks
Use this ebook to develop API tests that provide trustworthy feedback throughout the software delivery lifecycle.
What should an API test validate besides the HTTP status code?
Validate response headers, body schema, field values, authentication, error messages, and response time.
How does API testing differ from unit testing?
Unit testing checks isolated code components, while API testing verifies service endpoints, contracts, and integrations.
How can API tests be added to a CI/CD pipeline?
Run automated API test suites during builds or deployments and publish results through tools such as Jenkins.
This ebook/audiobook includes:
1 hours and 9 minutes of audio content
Digital certificate of course completion (Free)
Exercises to train your knowledge
100% free, from content to certificate
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