olemus
= tarkvara testimise viis, millega kontrollitakse, kuidas programm reageerib ootamatustele või lubamatutele andmetele
= a software testing technique that verifies how the program reacts to unexpected behaviors or invalid data

ülevaateid
https://en.wikipedia.org/wiki/Negative_testing

https://www.code-intelligence.com/blog/negative-testing-in-software-testing

https://www.geeksforgeeks.org/negative-testing-in-software-engineering/

https://blog.qasource.com/a-complete-guide-to-negative-testing-in-software-testing