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Mythical Unit Test Coverage

Journal article
Authors Vard Antinyan
J. Derehag
Anna Sandberg
Miroslaw Staron
Published in IEEE Software
Volume 35
Issue 3
Pages 73-79
ISSN 0740-7459
Publication year 2018
Published at Department of Applied Information Technology (GU)
Department of Computer Science and Engineering (GU)
Pages 73-79
Language en
Keywords Computer Science
Subject categories Software Engineering


It is a continuous struggle to understand how much a product should be tested before its delivery to the market. Ericsson, as a global software development company, decided to evaluate the adequacy of the unit-test-coverage criterion that it had employed for years as a guide for sufficiency of testing. Naturally, one can think that if increasing coverage decreases the number of defects significantly, then coverage can be considered a criterion for test sufficiency. To test this hypothesis in practice, we investigated the relationship of unit-test-coverage measures and post-unit-test defects in a large commercial product of Ericsson. The results indicate that high unit-test coverage did not seem to be any tangible help in producing defect-free software.

Page Manager: Webmaster|Last update: 9/11/2012

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