Black Box testing is a type of software testing where no prior understanding of the underlying code structure, implementation details, or internal paths of an application is required. It is also sometimes referred to as behavioral testing or external testing. It concentrates on the input and output of the application and depends fully on the requirements and standards for the software.
A software testing strategy called gray box testing, which mixes black box and white box testing, is used to test an application without having a complete grasp of its source code. It looks for and locates context-specific errors that the application’s shoddy coding has caused.
In order to verify the input-output flow and enhance the application’s design, security, and utility, white box testing looks at the underlying structure, coding, and architecture of a piece of software. Because the testers can view the code, this kind of testing is also known as internal testing, Clear box testing, Open box testing, and Glass box testing.