Test Blueprints - Exposing Side Effects in Execution Traces to Support Writing Unit Tests

Lienhard, Adrian; Gîrba, Tudor; Greevy, Orla; Nierstrasz, Oscar (2008). Test Blueprints - Exposing Side Effects in Execution Traces to Support Writing Unit Tests. In: Proceedings of the 12th European Conference on Software Maintenance and Reengineering, CSMR 2008, 1-4 April, Athens (pp. 83-92). Washington, DC: IEEE Computer Society 10.1109/CSMR.2008.4493303

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Writing unit tests for legacy systems is a key maintenance task. When writing tests for object-oriented programs, objects need to be set up and the expected effects of executing the unit under test need to be verified. If developers lack internal knowledge of a system, the task of writing tests is non-trivial. To address this problem, we propose an approach that exposes side effects detected in example runs of the system and uses these side effects to guide the developer when writing tests. We introduce a visualization called Test Blueprint, through which we identify what the required fixture is and what assertions are needed to verify the correct behavior of a unit under test. The dynamic analysis technique that underlies our approach is based on both tracing method executions and on tracking the flow of objects at runtime. To demonstrate the usefulness of our approach we present results from two case studies.

Item Type: Conference or Workshop Item (Paper)
Division/Institute: 08 Faculty of Science > Institute of Computer Science (INF)
UniBE Contributor: Lienhard, Adrian; Girba, Tudor Adrian; Greevy, Orla and Nierstrasz, Oscar Marius
Publisher: IEEE Computer Society
Language: English
Submitter: Factscience Import
Date Deposited: 04 Oct 2013 15:22
Last Modified: 06 Dec 2013 14:05
Publisher DOI: 10.1109/CSMR.2008.4493303
URI: http://boris.unibe.ch/id/eprint/37137 (FactScience: 206795)

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