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] The term is used mostly in software testing.

A special case of a software system is an application which, when tested, is called an application under test.

The term SUT can also refer to a stage of maturity of the software because system testing is the successor of integration testing in the testing cycle.

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 2018-02-05.


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