20 February 2007

Software Engineering: Black-Box Testing (Definitions)

"A specification-based test that looks at a system or unit exclusively from the outside, that is, over its public interface;" (Johannes Link & Peter Fröhlich, "Unit Testing in Java", 2003)

"This test compares the externally observable behavior at the external software interfaces (without knowledge of their structure) with the desired behavior. Black-Box tests are frequently equated with »functional tests«, although they can of course also include non-functional tests. See also White-box test." (Lars Dittmann et al, "Automotive SPICE in Practice", 2008)

"A software testing methodology that looks at available inputs for an application and the expected outputs from each input." (Mike Harwood, "Internet Security: How to Defend Against Attackers on the Web" 2nd Ed., 2015)

"A test designed by someone who doesn’t know how the code works internally." (Rod Stephens, "Beginning Software Engineering", 2015)

"A testing technique that tests the functionality of the application under test without knowledge of the internal code structure, implementation details, and internal paths of the software." (Pooja Kaplesh & Severin K Y Pang, "Software Testing", Software Engineering for Agile Application Development, 2020)

"A method of software testing that examines the functionality of an application without peering into its internal structures or workings. This method of test can be applied to virtually every level of software testing: unit, integration, system and acceptance." (NIST SP 800-192)

"A test methodology that assumes no knowledge of the internal structure and implementation detail of the assessment object." (CNSSI 4009-2015)

[black-box test design technique:] "Procedure to derive and/or select test cases based on an analysis of the specification, either functional or non-functional, of a component or system without reference to its internal structure." (ISTQB)

"Testing, either functional or non-functional, without reference to the internal structure of the component or system." (ISTQB)

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