What is white box testing used for?
Testers perform white box testing in order to inspect and verify the internal workings of software. It is a process often automated and used to get a comprehensive picture of what is happening under the hood of a piece of software. Components that are tested include coding, design, infrastructure, usability, security, and so on. Rather than focusing on simply the functionality of software, it is a process also testing the entire workings of the software.
White box testing can be seen in comparison to black box testing, a topic on which we have another explanatory blog for you to check out. Black box testing focuses on functionality, by providing input to a system and observing the output. In this form of testing, no knowledge of internal systems is required, it is a more surface layer form of testing.
Whether white or black box testing models are chosen depends on the requirements, scope, and even budget of a project. It can also depend on the expertise and experience of the testers involved, as white box testing is a more advanced development technique.
All forms of testing have the same basic premise, to test whether something works or not. White box testing goes a little further to help us understand why a bug may occur and on what level.