Can you explain the difference between black box and white box testing?

Explaining the Difference Between Black Box and White Box Testing

Black box testing and white box testing are two common methods used in manual testing to ensure the quality and functionality of software applications. Understanding the difference between these two approaches is crucial for software testers. Here's a brief explanation:

Black Box Testing:

Black box testing, also known as functional testing, focuses on the external behavior of the software application without considering the internal code structure. Testers evaluate the application based on its specifications and expected outputs without any knowledge of the internal implementation details. This approach mimics how end-users interact with the software, helping to identify any functional defects or usability issues.

White Box Testing:

White box testing, on the other hand, is also known as structural testing or glass-box testing. This approach involves examining the internal code structure of the software application to ensure that it is working as expected. Testers have access to the source code and use this knowledge to design test cases that evaluate the logic and decision-making processes within the application. White box testing helps identify issues related to code optimization, logic errors, and code coverage.

In summary, while black box testing focuses on the external behavior of the software application, white box testing delves into the internal code structure to ensure its functionality and quality.

Both black box and white box testing are essential components of a comprehensive testing strategy and are used in conjunction to ensure the overall reliability of the software application.