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ASE 2019
Sun 10 - Fri 15 November 2019 San Diego, California, United States
Wed 13 Nov 2019 14:20 - 14:40 at Hillcrest - Configurations and Variability Chair(s): Shin Hwei Tan

Code snippets are prevalent, but are hard to reuse because they often lack an accompanying environment configuration. Most are not actively maintained, allowing for drift between the most recent possible configuration and the code snippet as the snippet becomes out-of-date over time. Recent work has identified the problem of validating and detecting out-of-date code snippets as the most important consideration for code reuse. However, determining if a snippet is correct, but simply out-of-date, is a non-trivial task. In the best case, breaking changes are well documented, allowing developers to manually determine when a code snippet contains an out-of-date API usage. In the worst case, determining if and when a breaking change was made requires an exhaustive search through previous dependency versions.

We present V2, a strategy for determining if a code snippet is out-of-date by detecting discrete instances of configuration drift, where the snippet uses an API which has since undergone a breaking change. Each instance of configuration drift is classified by a failure encountered during validation and a configuration patch, consisting of dependency version changes, which fixes the underlying fault. V2 uses feedback-directed search to explore the possible configuration space for a code snippet, reducing the number of potential environment configurations that need to be validated. When run on a corpus of public Python snippets from prior research, V2 identifies 248 instances of configuration drift.

Wed 13 Nov

Displayed time zone: Tijuana, Baja California change

13:40 - 15:20
Configurations and VariabilityJournal First Presentations / Research Papers at Hillcrest
Chair(s): Shin Hwei Tan Southern University of Science and Technology
13:40
20m
Talk
ACTGAN: Automatic Configuration Tuning for Software Systems with Generative Adversarial Networks
Research Papers
Liang Bao School of Computer Science and Technology, XiDian University, Xin Liu Department of Computer Science, University of California, Davis, Fangzheng Wang School of Computer Science and Technology, XiDian University, Baoyin Fang School of Computer Science and Technology, XiDian University
14:00
20m
Talk
Automated N-way Program Merging for Facilitating Family-Based Analyses of Variant-Rich Software
Journal First Presentations
Dennis Reuling Software Engineering Group, University of Siegen, Udo Kelter Software Engineering Group, University of Siegen, Johannes B├╝rdek TU Darmstadt, Real-time Systems Lab, Malte Lochau TU Darmstadt
Link to publication DOI
14:20
20m
Talk
V2: Fast Detection of Configuration Drift in Python
Research Papers
Eric Horton North Carolina State University, Chris Parnin NCSU
Pre-print
14:40
20m
Talk
Feature-Interaction Aware Configuration Prioritization for Configurable Code
Research Papers
Son Nguyen The University of Texas at Dallas, Hoan Anh Nguyen Amazon, Ngoc Tran University of Texas at Dallas, Hieu Tran The University of Texas at Dallas, Tien N. Nguyen University of Texas at Dallas
15:00
20m
Talk
Search-based test case implantation for testing untested configurations
Journal First Presentations
Dipesh Pradhan Simula Research Laboratory, Norway, Shuai Wang Hong Kong University of Science and Technology, Tao Yue Nanjing University of Aeronautics and Astronautics & Simula Research Laboratory, Shaukat Ali Simula Research Lab, Marius Liaaen Cisco Systems
Link to publication