Rest API Testing (Automation) : Rest Assured PostMan

Rest Assured API Testing Automation PostMan, API Automation Testing Framework, Realtime Demos Live Projects
⏱️ Length: 27.7 total hours
⭐ 4.49/5 rating
👥 45,653 students
🔄 August 2025 update

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Course Overview
- This comprehensive course is meticulously designed to equip aspiring and experienced quality assurance professionals, developers, and automation engineers with a profound mastery of REST API testing. It addresses the critical need for robust API quality in modern software development by offering a dual-pronged learning approach, blending both intuitive manual exploration and sophisticated automation strategies. The curriculum is structured to provide an end-to-end understanding of API interactions, validations, and the strategic implementation of an automation framework.
- The program emphasizes hands-on, project-based learning, moving beyond theoretical concepts to practical, real-world scenarios. Learners will not only grasp the fundamentals but also delve into advanced techniques required to tackle complex API challenges effectively. With an impressive track record of highly rated content and a large student base, this course stands as a testament to its efficacy in delivering industry-relevant skills. It is continually updated to reflect the latest industry standards and tool capabilities, ensuring the knowledge acquired remains current and valuable.
- By taking a deep dive into the intricacies of RESTful architecture, students will gain a strategic perspective on how API testing contributes significantly to faster release cycles, improved system stability, and overall product reliability. The course fosters a problem-solving mindset, empowering learners to identify potential weaknesses in API design and implementation proactively. It’s an investment in developing a skillset that is highly sought after in the competitive tech landscape, paving the way for advanced roles in automation and quality engineering.
- This learning journey provides an unparalleled opportunity to bridge the gap between understanding how APIs work and how to effectively validate their functionality, performance, and security. It offers a structured path to building confidence in API testing, enabling participants to contribute meaningfully to development teams and elevate their professional capabilities. The practical application of learned concepts through live demonstrations solidifies understanding and ensures immediate applicability in professional environments.
Requirements / Prerequisites
- A foundational understanding of Java programming concepts is essential, as Rest Assured, the primary automation library, is Java-based. Familiarity with basic syntax, object-oriented principles, and control flow structures will significantly aid in grasping the automation aspects of the course. While not requiring expert-level Java, a comfort with reading and writing simple Java code will be beneficial.
- Learners should possess a general understanding of web services, client-server architecture, and the HTTP protocol. Knowledge of common HTTP methods (GET, POST, PUT, DELETE) and status codes will provide a solid context for API interactions. An awareness of how web applications communicate under the hood will enrich the learning experience.
- Basic exposure to software testing principles and methodologies is recommended. This includes concepts such as test cases, test data, assertions, and different types of testing. While the course covers API-specific testing, a broader understanding of quality assurance will help in contextualizing the automation efforts.
- A stable internet connection is required to access course materials, download necessary tools, and participate in online discussions or live sessions. Access to a personal computer with sufficient processing power and memory to run an Integrated Development Environment (IDE) like Eclipse or IntelliJ IDEA, along with Java Development Kit (JDK), is also necessary.
- A strong desire to learn automation, willingness to engage in hands-on practice, and a curious mindset to explore API functionalities are key attributes for maximizing the benefits of this course. Prior experience with API testing is not strictly required, as the course builds knowledge from foundational levels.
Skills Covered / Tools Used
- Advanced Postman Proficiency: Master the full spectrum of Postman capabilities, including environment management for different stages (dev, staging, prod), creating comprehensive collections, utilizing pre-request and test scripts for dynamic request generation and validation, and mocking server responses for frontend development or early testing phases.
- REST Assured for Programmatic Interactions: Gain expertise in constructing complex HTTP requests (GET, POST, PUT, DELETE, PATCH), handling various content types (JSON, XML), parsing and validating API responses programmatically, and implementing advanced assertion techniques within a Java environment.
- JSON/XML Payload Manipulation & Validation: Develop skills in processing and validating API data structures using JSONPath and XMLPath expressions. Learn to create dynamic request bodies, extract specific data points from responses, and perform schema validations to ensure data integrity and adherence to API contracts.
- Robust Authentication & Authorization Handling: Implement diverse security mechanisms in API tests, including Basic Authentication, Bearer Token authentication, API Keys, and understanding the integration patterns for OAuth 2.0 or JWT (JSON Web Tokens) within both Postman and Rest Assured.
- TestNG for Enhanced Test Orchestration: Utilize TestNG annotations for effective test method grouping, parallel execution, parameterization of test data, creating test dependencies, and structuring test suites for scalable and maintainable automation. Explore advanced configurations for reporting and listener implementation.
- Maven for Project Management & Dependencies: Learn to set up and manage Java-based automation projects using Maven. Understand how to declare dependencies, define build lifecycles, and execute tests directly from Maven, facilitating consistent project builds and easier collaboration across teams.
- Dynamic Test Data Management: Implement strategies for data-driven testing by externalizing test data from test scripts using various sources (CSV, Excel, JSON files) or generating dynamic data on the fly, making tests more flexible and reusable across different scenarios.
- API Chaining and Workflow Testing: Develop techniques for creating complex end-to-end test flows where the output of one API call serves as input for a subsequent call. This covers real-world scenarios like user registration followed by login, or resource creation followed by retrieval and deletion.
- Effective Error Handling and Negative Testing: Design test cases to validate API behavior under erroneous conditions, including invalid inputs, unauthorized access attempts, missing parameters, and server errors. Learn to assert specific error codes and messages to ensure graceful degradation.
- Integration with IDEs: Efficiently utilize popular Integrated Development Environments such as Eclipse or IntelliJ IDEA for writing, debugging, and managing your API automation code, leveraging their features for productivity and code quality.
Benefits / Outcomes
- Mastery of API Automation Framework Design: By the end of this course, you will be fully capable of conceptualizing, designing, and implementing scalable, maintainable, and robust API automation frameworks from the ground up, tailored to various project requirements and organizational needs.
- Enhanced Career Trajectory: Gain a significant competitive edge in the job market, qualifying for advanced roles in API automation engineering, test lead positions, and quality assurance architect roles. The skills acquired are highly demanded across industries, ensuring strong career growth and improved earning potential.
- Proficiency in Defect Identification & Reporting: Develop acute skills in identifying subtle and critical defects within API functionalities, performance, and security vulnerabilities. You will learn to articulate these findings clearly and effectively, contributing to high-quality bug reports that expedite resolution.
- Contribution to Accelerated Release Cycles: Become an indispensable asset to your development team by implementing efficient and fast-executing API tests. Your contributions will directly lead to quicker feedback loops, reduced manual testing efforts, and a significant acceleration of the software development and release cycles.
- Confidence in Complex API Scenarios: You will possess the expertise to confidently approach and test complex API integrations, microservices architectures, and distributed systems, understanding how to structure tests for maximum coverage and reliability, even in intricate environments.
- Interview Readiness for Automation Roles: The comprehensive, practical nature of the course prepares you thoroughly for technical interviews, allowing you to confidently discuss API testing strategies, framework architecture, and real-world problem-solving approaches with potential employers.
- Subject Matter Expertise in API Quality: Emerge as a go-to expert within your organization for all matters related to API quality assurance. You will be equipped to guide teams on best practices, tooling, and strategic approaches to ensure the robust quality of their API ecosystems.
PROS
- Comprehensive and Up-to-Date Content: The course offers an exhaustive exploration of API testing, covering both manual and automation aspects with tools that are current and highly relevant in the industry, reflecting the latest August 2025 update.
- Highly Practical and Project-Oriented: Strong emphasis on real-time demos and live projects ensures that learners gain hands-on experience, making the transition from learning to application seamless and effective.
- Proven Success and High Student Satisfaction: With a 4.49/5 rating from over 45,000 students, the course’s quality and effectiveness are well-established and highly regarded by a large learning community.
- Dual-Tool Approach for Versatility: By teaching both Postman and Rest Assured, the course provides a versatile skillset, preparing learners for various testing scenarios, from quick manual validations to building robust automation frameworks.
- Strong Foundation for Advanced Automation: The structured approach to building an API automation framework from scratch using Maven and TestNG provides a solid base for tackling more complex automation challenges and integrating with CI/CD pipelines.
CONS
- Requires Consistent Practice and Self-Discipline: Mastery of API automation, especially framework development, necessitates dedicated practice beyond the course content and strong self-discipline to internalize complex concepts and tools.