Black box tests

 Testing is a crucial step of the software development cycle because it ensures that all the requirements have been converted to a successful end product. An Ideal software testing process has to be a holistic approach that involves a combination of various testing techniques to achieve high-quality software.

The two most commonly used testing approaches are White Box and Black Box testing.

What is White box testing?

White box testing is used to test the structure and business logic of a program being developed. It requires the tester to know all the functional and design details of the module/code that is being tested. The tester needs to have in-depth knowledge of the requirements, design, code as well as the expected outcome. White-box testing can be applied at the Unit, Integration and System levels of the software testing process. 

White Box Testing is known by several other names, such as Glass box testing, Clear Box testing, Open Box testing, Structural testing, Path Driven Testing or Logic driven testing.

Types of White Box Testing

• Unit Testing: Performed on each unit or block of code as it is developed to identify a majority of bugs, early in the software development lifecycle.
• Testing for Memory Leaks: Essential in cases where you have a slow running software application due to memory leaks.

What is black box testing?

Black Box Testing, also known as functional testing or behavioural testing, essentially requires the testers to evaluate the functionality and usability of the software without looking at the details of the code. It not only verifies and validates the functionality of the software but also checks for any interface issues. 

In this article, we will explore the differences between these two types of testing and analyse how they can be best used for comprehensive testing.

Types of Black Box Testing

There are many types of Black Box Testing but the following are the prominent ones –

• Functional testing – Related to the functional requirements of a system.
• Non-functional testing – Related to non-functional requirements such as performance, scalability, usability.
• Regression testing – Regression Testing is done after code fixes, upgrades or any other system maintenance to check the new code has not affected the existing code. Click here to read more : black box tests

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