Any sort of software test that evaluates an application without knowledge of the internal design, structure, or execution of the software project is referred to as black box testing. Unit testing, integration testing, system testing, and acceptance testing are all examples of black box testing.
Black box testing examines scenarios in which the system could fail. For example, a user may input the password in the incorrect format and may not receive an error notice when doing so.
This method is named for the software program, which appears to the tester to be a black box from the inside. This method looks for mistakes in the following categories: Functions that are incorrect or missing.
It tests both the application's functional and non-functional requirements. It is not necessary to understand or have access to the software's coding, design, or internal architecture. Testers can operate independently of developers, ensuring unbiased and end-user focused testing.