Context: Destructive testing attempts to cause the software or a sub-system to fail. It verifies that the software functions properly even when it receives invalid or unexpected inputs, thereby establishing the robustness of input validation and error-management routines.[citation needed] Software fault injection, in the form of fuzzing, is an example of failure testing. Various commercial non-functional testing tools are linked from the software fault injection page; there are also numerous open-source and free software tools available that perform destructive testing.

Question: What method is used to cause a system to fail?
Answer: Destructive testing

Question: What does Destructive testing verify?
Answer: software functions properly even when it receives invalid or unexpected inputs

Question: What is one example of failure testing?
Answer: Software fault injection

Question: Destruction testing does what?
Answer: Unanswerable

Question: What does destruction testing verify?
Answer: Unanswerable

Question: What is an example of software fault injecture?
Answer: Unanswerable

Question: There are very few open-source and free tools that do what?
Answer: Unanswerable