White-box testing or clear box testing, transparent box testing, glass box testing, structural testing as it is also known can be defined as a method for testing software applications or programs. White box testing includes techniques that are used to test the program or algorithmic structures and working of that particular software application in opposition to its functionalities or the results of its black box tests.
White-box testing can be defined as a methodology to verify the source code of the software system if it works as expected or not. White box testing is a synonym for structural testing.
Unit testing and Integration testing is already discussed in previous post.
Types of White Box Testing
- Function level testing:
This white box testing is carried to check the flow of control of the program. Adequate test cases are designed to check the control flow and coverage. During functionality level white box testing simple input values can be used.
- Acceptance level testing:
This type of white box testing is performed to determine whether all he specifications of a software system have been fulfilled or not. It involves various kinds of other tests like physical tests, chemical tests and performance tests.
- Regression level testing:
This type of white box testing can also be called as retesting. It is done after all the modifications have been done to the software and hardware units. Regression level white box testing ensures that the modifications have not altered the working of the software and has not given rise to more bugs and errors.
- Beta level testing:
Beta testing is that phase of software testing in which a selected audience tries out the finished software application or the product. It is also called pre- release testing.
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