CAREER: Testing and Maintaining Evolving Software Systems

9703108个有用的软件不断演变：经过更正、增强并适应新平台。这种软件的成本主要是测试和维护的成本；这种软件的长期质量取决于测试和维护的有效性。该项目的总体目标是提高软件测试和维护方面的技术水平和实践水平。这项工作的研究部分涉及回归测试：修改后的软件的测试。这项工作有两个主要目标：(1)开发高效、有效和实用的技术来选择性地重新测试修改后的软件；(2)分析和经验地调查软件和测试设计中影响软件回归可测试性的因素，并开发测量和改进回归可测试性的技术。这项工作的教育部分调查了维护和测试优先的软件工程课程，在该课程中，学生体验维护和测试现有软件系统的问题，并指定和设计对系统的增强。这项工作的目标是：(1)提供测试和维护方面的实践经验，以及(2)鼓励未来的软件工程师主动评估他们的行为对可测试性和可维护性的影响。***

9703108 Useful software evolves: It is corrected, enhanced, and adapted to new platforms. The cost of such software is dominated by the costs of testing and maintenance; the long-term quality of such software is dependent on the effectiveness of testing and maintenance. The overall goal of this project is to improve the state of the art and the state of the practice in software testing and maintenance. The research component of this work addresses regression testing: the testing of modified software. This effort has two primary objectives: (1) to develop efficient, effective, and practical techniques for selectively retesting modified software; (2) to analytically and empirically investigate factors in software and test design that affect the regression testability of software, and develop techniques for measuring and improving regression testability. The educational component of this work investigates a maintenance-and-testing- first software engineering curriculum, in which students experience the problems of maintaining and testing an existing software system and specify and design enhancements to the system. The objectives of this effort are: (1) to provide practical experience with testing and maintenance, and (2) to encourage future software engineers to proactively evaluate the impact of their actions on testability and maintainability. ***