Comparing the co-evolution of production and test code in open source and industrial developer test processes through repository mining

This paper represents an extension to our previous work: Mining software repositories to study coevolution of production & test code. Proceedings of the International Conference on Software Testing, Verification, and Validation (ICST), IEEE Computer Society, 2008; doi:10.1109/ICST.2008.47 Engineering software systems is a multidimensional...

Adinda: A knowledgeable, browser-based IDE

In practice, many people have to work together to develop and maintain a software system. However, the programmer’s key tool, the Integrated Development Environment (IDE), is a solo-tool, serving to help individual programmers understand and modify the system. Such an IDE does not leverage the knowledge other team members may have of the design...

Managing Code Clones Using Dynamic Change Tracking and Resolution

Paper accepted for publication in the proceedings of the 25th International Conference on Software Maintenance (ICSM 2009). Code cloning is widely recognized as a threat to the maintainability of source code. As such, many clone detection and removal strategies have been proposed. However, some clones can often not be removed easily so other...

Mining Software Repositories to Study Co-Evolution of Production & Test Code

Preprint of paper published in: ICST 2008 - Proceedings of the International Conference on Software Testing, Verification, and Validation, 2008; doi:10.1109/ICST.2008.47 Engineering software systems is a multidisciplinary activity, whereby a number of artifacts must be created — and maintained — synchronously. In this paper we investigatewhether...

Understanding Execution Traces Using Massive Sequence and Circular Bundle Views

The use of dynamic information to aid in software understanding is a common practice nowadays. One of the many approaches concerns the comprehension of execution traces. A major issue in this context is scalability: due to the vast amounts of information, it is a very difficult task to successfully find your way through such traces without...

Execution Trace Analysis through Massive Sequence and Circular Bundle Views

Preprint of article published in: Journal of Systems and Software (Elsevier), 81 (12), 2008; doi:10.1016/j.jss.2008.02.068 An important part of many software maintenance tasks is to gain a sufficient level of understanding of the system at hand. The use of dynamic information to aid in this software understanding process is a common practice...

Studying the co-evolution of production and test code in open source and industrial developer test processes through repository mining

Many software production processes advocate rigorous development testing alongside functional code writing, which implies that both test code and production code should co-evolve. To gain insight in the nature of this co-evolution, this paper proposes three views (realized by a tool called TeMo) that combine information from a software project's...

Splitting a Large Software Archive for Easing Future Software Evolution: An Industrial Experience Report using Formal Concept Analysis

Preprint of paper published in: CSMR 2008 - 12th European Conference on Software Maintenance and Reengineering, 1-4 April 2008; doi:10.1109/CSMR.2008.4493310 Philips medical systems produces medical diagnostic imaging products, such as MR, X-ray and CT scanners. The software of these devices is complex, has been evolving for several decades and...

Visualizing Testsuites to Aid in Software Understanding

Agile software development methods such as eXtreme Programming have brought renewed attention to testing during the software development process, both as a quality assurance method and as a form of live documentation. It is for this reason that a software system’s testsuite is an ideal starting point for gaining knowledge about its inner...

A Systematic Survey of Program Comprehension through Dynamic Analysis

Preprint of paper published in: IEEE Transactions on Software Engineering, 35 (5), 2009; doi:10.1109/TSE.2009.28 Program comprehension is an important activity in software maintenance, as software must be sufficiently understood before it can be properly modified. The study of a program's execution, known as dynamic analysis, has become a common...

Connecting traces: Understanding client-server interactions in Ajax applications

Ajax-enabled web applications are a new breed of highly interactive, highly dynamic web applications. Although Ajax allows developers to create rich web applications, Ajax applications can be difficult to comprehend and thus to maintain. For this reason, we have created FireDetective, a tool that uses dynamic analysis at both the client (browser...

Work practices and challenges in pull-based development: The integrator's perspective

In the pull-based development model, the integrator has the crucial role of managing and integrating contributions. This work focuses on the role of the integrator and investigates working habits and challenges alike. We set up an exploratory qualitative study involving a large-scale survey involving 749 integrators, to which we add quantitative...

Splitting a large software repository for easing future software evolution: An industrial experience report

Paper accepted for publication in the Journal on Software Maintenance and Evolution — Research and Practice, Wiley, 2009. PhilipsMedical Systems produces medical diagnostic imaging products, such as MR, X-ray and CT systems. The software of these devices is complex, has been evolving for several decades and is currently a multi-MLOC monolithic...

Understanding Ajax Applications by Connecting Client and Server-Side Execution Traces

Author's version of the work published in: Empirical Software Engineering (Springer), 18 (2), 2013; doi:10.1007/s10664-012-9200-5 Ajax-enabled web applications are a new breed of highly interactive, highly dynamic web applications. Although Ajax allows developers to create rich web applications, Ajax applications can be difficult to comprehend...

Measuring Test Case Similarity to Support Test Suite Understanding

Preprint of paper published in: TOOLS 2012 - Proceedings of the 50th International Conference, Prague, Czech Republic, May 29-31, 2012; doi:10.1007/978-3-642-30561-0_8 In order to support test suite understanding, we investigate whether we can automatically derive relations between test cases. In particular, we search for trace-based...

On How Developers Test Open Source Software Systems

Engineering software systems is a multidisciplinary activity, whereby a number of artifacts must be created — and maintained — synchronously. In this paper we investigate whether production code and the accompanying tests co-evolve by exploring a project’s versioning system, code coverage reports and size-metrics. Three open source case studies...