KUnit is a unit testing framework for the Linux kernel. It is inspired by other x-unit testing frameworks (JUnit, Python unittest). According to Brendan Higgins (the author of KUnit) at LPC2019, the need for yet another framework is because other frameworks have their own style and conventions, which does not match kernel conventions. Since the kernel community is huge and telling everyone to change their conventions is a laborious idea, KUnit was made specifically to cater to kernel standards and usage.