System under test

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.

See also

References
  1. "ISTQB Glossary". glossary.istqb.org. Retrieved 2018-02-05.
  2. "Don't Stub the System Under Test". robots.thoughtbot.com. Retrieved 2018-02-05.
  3. "SUT (system under test)". www.itwissen.info (in German). Retrieved 2021-02-24.
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