What is Black box vs White box Testing?

White box testing and black box testing are two approaches to software testing that are used to evaluate the functionality of a software application.

Black box testing is a type of testing that focuses on the functionality of a software application and does not require knowledge of the internal structure or implementation of the code. In black box testing, the tester does not have access to the code or the internal workings of the software.

Instead, the tester interacts with the software using the user interface, just like a normal user would. The tester provides input to the software and then observes the output to determine if the software is functioning correctly. Black box testing is used to validate the functionality of the software and ensure that it meets the specified requirements.

On the other hand, White box testing is a type of testing that involves testing the internal structure and implementation of the code. In white box testing, the tester has full access to the code and the internal workings of the software. The tester is able to evaluate the code directly and test individual functions or components of the software. White box testing is used to ensure that the code is correctly implemented and that it meets the specified design and performance criteria.

Both black-box testing and white-box testing have their own advantages and disadvantages, and they are often used in combination to provide a comprehensive evaluation of a software application. Black box testing is useful for testing the functionality of the software from the user's perspective, while white box testing is useful for ensuring the quality and correctness of the code.

For more information, give a read to our white box testing tutorial and black box testing tutorial.