Chapter 23 of Roger S. Pressman's "Software Engineering: A Practitioner's Approach" focuses on Conventional Software Testing. The main objectives of this chapter are:

1. To Understand the Role of Testing in Software Development:

   • The chapter aims to highlight the importance of testing as a critical activity in the software development life cycle (SDLC). It emphasizes that testing is essential to ensure that software systems meet specified requirements and are free of defects.

2. To Explore Different Levels of Testing:

   • The chapter provides an in-depth understanding of the various levels of testing, such as unit testing, integration testing, system testing, and acceptance testing. It discusses how each level fits into the broader testing strategy and the specific objectives each level aims to achieve.

3. To Distinguish Between Verification and Validation:

   • The chapter clarifies the concepts of verification and validation, explaining how they differ and how both are necessary to ensure software quality. Verification checks if the software correctly implements specific functions, while validation ensures that the software fulfills its intended use.

4. To Describe Different Testing Techniques and Strategies:

   • The chapter covers various testing techniques, including black-box and white-box testing, along with their specific purposes, strengths, and limitations. It explains how these techniques can be applied to effectively identify and rectify defects in software.

5. To Emphasize the Importance of Test Planning and Documentation:

   • The chapter underscores the need for a well-structured test plan that includes clear objectives, resources, timelines, and criteria for success. It discusses the role of documentation in managing and communicating testing activities and outcomes.

6. To Introduce Test Automation and Its Benefits:

   • The chapter introduces the concept of test automation, explaining its advantages in improving testing efficiency and coverage, particularly for repetitive testing tasks such as regression testing.

7. To Discuss Debugging Techniques and Their Role in Testing:

   • The chapter provides insights into debugging, a critical component of the testing process. It outlines common debugging techniques and approaches to identify, analyze, and fix defects found during testing.

8. To Highlight the Challenges and Limitations of Testing:

   • The chapter addresses the inherent challenges in software testing, such as the impossibility of exhaustive testing and the limitations of different testing techniques. It also discusses how testers can manage these challenges to ensure effective testing.

9. To Explain the Use of Testing Metrics:

   • The chapter introduces testing metrics, such as defect density and code coverage, to assess the effectiveness and efficiency of the testing process. It discusses how these metrics can guide improvements in testing practices.

10. To Promote a Comprehensive Approach to Software Quality Assurance:

• Overall, the chapter advocates for a comprehensive approach to software quality assurance that integrates multiple testing strategies and techniques. It emphasizes that effective testing requires a combination of planning, execution, and continuous improvement to ensure high-quality software.

By addressing these objectives, Chapter 23 aims to provide a thorough understanding of conventional software testing and its role in delivering reliable, high-quality software products.