Structural Testing (White Box Testing)

Structural  Testing  (White Box  Testing):

• White Box Testing is software testing technique in which internal structure, design and coding of software are tested to verify flow of input-output and to improve design, usability and security. In white box testing, code is visible to testers so it is also called Clear box testing, Open box testing, Transparent box testing, Code-based testing and Glass box testing.
• Structure-based testing technique is also known as 'white-box' or 'glass-box' testing technique because here the testers require knowledge of how the software is implemented, how it works. In white-box testing the tester is concentrating on how the software does it.
• It is one of two parts of the Box Testing approach to software testing. Its counterpart, Blackbox testing, involves testing from an external or end-user type perspective. On the other hand, White box testing in software engineering is based on the inner workings of an application and revolves around internal testing.

Advantages:

• Code optimization by finding hidden errors.
• White box test cases can be easily automated.

Disadvantages:

• White box testing can be quite complex and expensive.
• Developers who usually execute white box test cases detest it. The white box testing by developers is not detailed and can lead to production errors.