// Workers AI · dad joke modeWhat did the system under test say? "I'm being put to the test.
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System under test (SUT) refers to a system that is being tested for correct operation. According to ISTQB it is the test object.[1][2][3]
From a unit testing perspective, the system under test represents all of the classes in a test that are not predefined pieces of code like stubs or even mocks. Each one of this can have its own configuration (a name and a version), making it scalable for a series of tests to get more and more precise, according to the quantity of quality of the system in test.
ISO/IEC/IEEE 29119 defines SUT within a standardized vocabulary and test-process framework.[4]
See also
[edit]References
[edit]- ↑ "ISTQB Glossary". glossary.istqb.org. Retrieved 2018-02-05.
- ↑ "Don't Stub the System Under Test". robots.thoughtbot.com. 22 November 2013. Retrieved 2018-02-05.
- ↑ "SUT (system under test)". www.itwissen.info (in German). Retrieved 2021-02-24.
- ↑ "ISO/IEC/IEEE 29119-1:2022 — Software testing — Part 1: Concepts and definitions" (PDF). ISO/IEC/IEEE. 2022. Retrieved 17 September 2025.
External links
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