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  1. Proceedings of the 13th International Conference on Principles and Practices of Programming on the Java Platform: Virtual Machines, Languages, and Tools (PPPJ '16)
  2. Maintaining Unit Tests During Refactoring
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Maintaining Unit Tests During Refactoring

Content Provider ACM Digital Library
Author Passier, Harrie Bockisch, Christoph Bijlsma, Lex
Abstract The meaning of source code is often described by unit tests, as is for example the case in Test-Driven Software Development. Test-driven development is a principle in software engineering that requires developers to write tests for each method before implementing the method itself. This ensures that for (at least) all public methods tests exist. When performing a refactoring, existing code is changed or restructured according to a predefined scheme. After a refactoring is applied, the alignment between the structure of source code and corresponding unit tests can be broken. In this paper we describe different ways in which refactorings can impact the API coverage of unit tests. We present our approach of tracking the modifications made by refactorings, analyzing their influence on the existing test suite and giving advice to developers on how to update the test suite to migrate it. For example, tests may need to be moved or new tests developed in case a refactoring introduced new public methods. Our approach is applicable to all refactorings. We conclude this paper by discussing the potential of the presented approach and of the preliminary tool support in the Eclipse IDE.
Starting Page 1
Ending Page 6
Page Count 6
File Format PDF
ISBN 9781450341356
DOI 10.1145/2972206.2972223
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2016-08-29
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Api coverage Unit tests Test-driven development Ast rewrite Junit Eclipse plug-in Structural alignment Refactoring
Content Type Text
Resource Type Article
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