What type of testing is associated with white box techniques?

White box testing techniques focus on the internal workings, structure, and implementation of the software being tested. This type of testing is also known as structure-based testing because it involves an understanding of the code and the architecture behind the application. By examining the internal logic and structure, testers can design test cases that ensure that the software functions correctly at the code level.

This method allows testers to evaluate various code paths, conditional statements, and loops, ensuring that all parts of the program have been exercised. The aim is to identify logical errors, verify control flow, assess data flow, and ensure the complete coverage of the algorithms used in the code. In contrast, the other types of testing mentioned do not primarily focus on the internal structure of the application. Functional testing, performance testing, and regression testing emphasize various characteristics of software from a user's perspective or operational metrics, rather than the code itself.