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WHITE BOX TESTING VERSUS BLACK BOX TESTING

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In previous posts we discuss a lot about testing, types of testing extra but here we are going to discuss something which is very important for every novel software tester, as this is the most asked question in a software testing interview.

Before discussing the difference points let's quickly understand what is black box testing and what is white box testing??

White box testing is that type of software testing in which the inner structure is clearly known to the software tester. It is also called transparent testing.
Whereas black box testing is that type of software testing in which the internal structure or code is not known to the software tester.


SR. NO&CRITERIA
WHITE BOX TESTING
BLACK BOX  TESTING
1.Definition
White box testing is a kind of testing in which internal structure, design or implementation of the product or software is well known to the software tester
Black box testing is a kind of testing in  which  the internal structure, design or  implementation  is  clearly known to the software tester
2.Performed by
White box testing is performed by the software developers
 Black box testing is carried out by  software testers
3.Applicable To
Mainly applicable to lower level of testing viz Unit Testing, Integration Testing.
Mainly applicable to higher level of  testing viz Acceptance  Testing,  
System Testing
4.Implementation Knowledge
Required
Not Required
5.Responsibility
Software developers are responsible
Software testers are responsible
6.Basis for Test Cases
Detail Design
Requirement Specification
7.Means
White box Testing actually means structural testing or interior testing
Black box testing actually means functional testing or external testing
8.Main aim
The main aim of white box testing is to check how system is performing
The main aim of black box testing is that what functionality is being testing by system under test cases



For more such kind of information please visit our very own http://www.precisetestingsolution.com/
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