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What do you understand about white box testing and black box testing? Differentiate between them.

Answer»
  • Black Box Testing: The customer's statement of requirements is the most COMMON source of black-box testing. It's a different kind of manual testing. It's a software testing technique that LOOKS at the software's functionality without knowing anything about its internal structure or coding. It does not necessitate any software programming knowledge. All test cases are created with the input and output of a certain function in mind. The test engineer examines the programme against the specifications, detects any faults or errors, and returns it to the development team.
  • White Box Testing: The term "clear box," "white box," or "transparent box" refers to the capacity to see into the inner workings of software through its outside shell. It is carried out by developers, after which the software is handed to the testing team for black-box testing. The fundamental goal of white-box testing is to examine the infrastructure of an application. It is carried out at a lower level, as unit testing and integration testing are included. It necessitates programming skills because it primarily focuses on a program's or software's code structure, routes, conditions, and branches. The main purpose of white-box testing is to concentrate on the flow of INPUTS and outputs via the software while also ensuring its security.

The following table lists the differences between black box and white box testing: 

Black Box Testing White Box Testing
It's a software testing technique that looks at how the software WORKS without knowing anything about its core structure or coding.In white-box testing, the tester is aware of the software's internal structure.
Functional testing, data-driven testing, and closed-box testing are all terms used to describe Black Box Testing.It is also known as structural testing, clear box testing, code-based testing, and transparent testing.
There is minimal programming knowledge necessary in black-box testing.There is a demand for programming skills in white-box testing.
It's not the best tool for testing algorithms.It's ideal for algorithm testing and comes highly recommended.
It is carried out at the higher stages of testing, such as system and acceptability testing.It is carried out at the unit and integration testing stages of testing.
It is primarily carried out by software testers.Developers are the ones who do it the most.
It takes less time to complete. The amount of time spent on black-box testing is determined by the availability of functional specifications.It takes a longer time. Because of the large code, creating test cases takes a long time.
External expectations serve as the foundation for this testing.The foundation of this testing is code, which is in charge of internal operations.
There is no need for implementation knowledge in black-box testing.There is a demand for implementation knowledge in white-box testing.
Once the code is READY, flaws are found via black-box testing.White box testing allows for the early detection of faults.
Functional testing, Non-Functional testing, and Regression testing are the three main types of black-box testing.Path testing, Loop testing, and Condition testing are types of white box testing.


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