Regression testing is a testing activity that is performed to provide confidence that changes do not harm the existing behaviour of the software. Test suites tend to grow in size as software evolves, often making it too costly to execute entire test suites. A number of different approaches have been studied to maximize the value of the accrued test suite: minimization, selection and prioritization. Test suite minimization seeks to eliminate redundant test cases in order to reduce the number of tests to run. Test case selection seeks to identify the test cases that are relevant to some set of recent changes. Test case prioritization seeks to order test cases in such a way that early fault detection is maximized. This paper surveys each area of minimization, selection and prioritization technique and discusses open problems and potential directions for future research. Copyright © 2010 John Wiley & Sons, Ltd.

Regression testing minimization, selection and prioritization: a survey

技術解説 IEEE Computer

Regression testing is a testing activity that is performed to provide confidence that changes do not harm the existing behaviour of the software. Test suites tend to grow in size as software evolve, often making it too costly to execute entire test suites. A number of different approaches have been studied to maximise the value of the accrued test suite: minimisation, selection and prioritisation. Test suite minimisation seeks to eliminate redundant test cases in order to reduce the number of tests to run. Test case selection seeks to identify the test cases that are relevant to some set of recent changes. Test case prioritisation seeks to order test cases in such a way that early fault detection is maximised. This paper surveys each area of minimisation, selection and prioritisation technique and discusses open problems and potential directions for future research. Copyright c © 2007 Shin Yoo & Mark Harman

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Regression Testing Minimisation, Selection and Prioritisation - A Survey

Service-oriented architecture (SOA) is gaining momentum as an emerging distributed system architecture for business-to-business collaborations. This momentum can be observed in both industry and academic research. SOA presents new challenges and opportunities for testing and verification, leading to an upsurge in research. This paper surveys the previous work undertaken on testing and verification of service-centric systems, which in total are 177 papers, showing the strengths and weaknesses of current strategies and testing tools and identifying issues for future work. Copyright © 2012 John Wiley & Sons, Ltd.

Testing and verification in service-oriented architecture: a survey

Service Research Challenges and Solutions for the Future Internet

Existing safe regression test selection techniques, especially the white-box testing methods, do not work with Web service applications due to the inherent distributed nature of Web service systems. In this paper, we have presented a code transformation approach to regression test selection. The transformed code forms a local Java program which simulates the functionality and behavior of the Web service applications in an end-to-end manner. Safe regression test selection techniques can then be applied to the transformed code and safely reduce test cases for the Web service applications. A safe regression test selection technique has an additional quality in that it guarantees that nothing that could produce an error in the first set of tests will be left untested in the second set of tests under certain well-defined conditions. Additionally, we provide implementation details as well as an example.

Applying Safe Regression Test Selection Techniques to Java Web Services

Business processes can be realized by utilizing many different Web services directly or indirectly in workflows which may be internal or external to the enterprise. Since service-oriented architecture allows service providers to modify the underlying implementation of a service at any time, a new set of challenges arise in software testing, especially regression testing. In this work, a framework which automates a key tenet of regression testing, safe regression test selection, for Web services in a decentralized, end-to-end manner using service monitoring will be presented. Any such system must be capable of handling multiple concurrent modifications and the main contribution of this work is defining and resolving those challenges related to concurrency in a framework for automating a decentralized, end-to-end, safe regression testing technique being applied to Web services. The challenges which will be discussed include coverage conflict, fault locatability, test inconsistency, and communication errors. A solution in the form of software agents following a predetermined distributed algorithm will also be presented.

Concurrency in a decentralized automatic regression test selection framework for web services

In this paper, we will focus on providing a solution to using the message exchange pattern, single-request/multiple-response (SRMR) in the context of Web services and secured enterprise environments. SRMR messaging is important because it can be used to model real world problems elegantly. However, SRMR messaging is not directly supported by Web services, and is hampered by current in-practice security schemes, such as firewalls and proxy servers. We have proposed a client-side framework to utilize SRMR Web services with the realities of network security in mind. The central component of our framework is a Web service clearinghouse, which serves as both a communication proxy and a message manager that realizes the correlation between clients' calls and the services' responses. Using our framework and the code generation utilities, we have implemented a number of nontrivial systems that use SRMR Web services.

Adapting single-request/multiple-response messaging to Web services

We have designed and implemented a framework assisting client-side applications to utilize asynchronous Web services that deliver results by calling back the applications in the context of enterprise security. This framework can support a number of rich features such as the single-request/multiple-response (SRMR) message exchange pattern, resumable clients, intra-enterprise user and terminal mobility, and flexible interaction modes for client applications to communicate with asynchronous Web services. Practical deployment of this framework in a number of cases has illustrated that this framework can effectively minimize development efforts in facilitating client applications to use Web services with callbacks.

A client-side framework enabling callbacks from Web services

As Web services grow in popularity and use, it is becoming more important for organizations to verify their evolving services to ensure that they are providing a desired level of confidence and one of the most common ways to perform this verification is regression testing. Safe regression test selection techniques are often employed in conjunction with regression testing to reduce the associated costs of testing without reducing the level of confidence provided. In a previous work, a framework which automates the safe regression test selection and regression testing processes was developed in a decentralized, end-to-end manner. This paper reports an empirical study of the framework designed to compare the cost of performing the proposed approach and running the selected tests with the cost of running all tests without performing a selection step. The results indicate that the framework can be effective in reducing the costs of performing regression test selection.

Empirical studies of a decentralized regression test selection framework for web services

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