On The Limits of Mutation Reduction Strategies.

Saved in:

Bibliographic Details
Title:	On The Limits of Mutation Reduction Strategies.
Authors:	Gopinath, Rahul¹ gopinath@eecs.orst.edu, Alipour, Mohammad Amin¹ alipour@eecs.orst.edu, Ahmed, Iftekhar¹ ahmedi@onid.orst.edu, Jensen, Carlos¹ cjensen@eecs.orst.edu, Groce, Alex¹ agroce@gmail.com
Source:	ICSE: International Conference on Software Engineering. 5/14/2016, p511-522. 12p.
Subjects:	Mutation testing of computer software, Computer software testing, Statistics, Software engineering, Artificial intelligence
Abstract:	Although mutation analysis is considered the best way to evaluate the effectiveness of a test suite, hefty computational cost often limits its use. To address this problem, various mutation reduction strategies have been proposed, all seeking to reduce the number of mutants while maintaining the representativeness of an exhaustive mutation analysis. While research has focused on the reduction achieved, the effectiveness of these strategies in selecting representative mutants, and the limits in doing so have not been investigated, either theoretically or empirically. We investigate the practical limits to the effectiveness of mutation reduction strategies, and provide a simple theoretical framework for thinking about the absolute limits. Our results show that the limit in improvement of effectiveness over random sampling for real-world open source programs is a mean of only 13.078%. Interestingly, there is no limit to the improvement that can be made by addition of new mutation operators. Given that this is the maximum that can be achieved with perfect advance knowledge of mutation kills, what can be practically achieved may be much worse. We conclude that more effort should be focused on enhancing mutations than removing operators in the name of selective mutation for questionable benefit. [ABSTRACT FROM AUTHOR]
	Copyright of ICSE: International Conference on Software Engineering is the property of Association for Computing Machinery and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database:	Engineering Source

Description
Abstract:	Although mutation analysis is considered the best way to evaluate the effectiveness of a test suite, hefty computational cost often limits its use. To address this problem, various mutation reduction strategies have been proposed, all seeking to reduce the number of mutants while maintaining the representativeness of an exhaustive mutation analysis. While research has focused on the reduction achieved, the effectiveness of these strategies in selecting representative mutants, and the limits in doing so have not been investigated, either theoretically or empirically. We investigate the practical limits to the effectiveness of mutation reduction strategies, and provide a simple theoretical framework for thinking about the absolute limits. Our results show that the limit in improvement of effectiveness over random sampling for real-world open source programs is a mean of only 13.078%. Interestingly, there is no limit to the improvement that can be made by addition of new mutation operators. Given that this is the maximum that can be achieved with perfect advance knowledge of mutation kills, what can be practically achieved may be much worse. We conclude that more effort should be focused on enhancing mutations than removing operators in the name of selective mutation for questionable benefit. [ABSTRACT FROM AUTHOR]
DOI:	10.1145/2884781.2884787