Difference between blackbox and whitebox tests


Differences between Black Box Testing vs White Box Testing: 

Black Box TestingWhite Box Testing
It is a way of software testing in which the internal structure or the program or the code is hidden, and nothing is known about it.It is a way of testing the software in which the tester has knowledge about the internal structure or the code or the program of the software.
Implementation of code is not needed for black box testing.Code implementation is necessary for white box testing.
It is mostly done by software testers.It is mostly done by software developers.
No knowledge of implementation is needed.Knowledge of implementation is required.
It can be referred to as outer or external software testing.It is the inner or the internal software testing.
It is a functional test of the software.It is a structural test of the software.
This testing can be initiated based on the requirement specifications document.This type of testing of software is started after a detail design document.
No knowledge of programming is required.It is mandatory to have knowledge of programming.
It is the behavior testing of the software.It is the logic testing of the software.
It is applicable to the higher levels of testing of software.It is generally applicable to the lower levels of software testing.
It is also called closed testing.It is also called as clear box testing.
It is least time consuming.It is most time consuming.
It is not suitable or preferred for algorithm testing.It is suitable for algorithm testing.
Can be done by trial-and-error ways and methods.Data domains along with inner or internal boundaries can be better tested.
Example: Search something on googles by using keywordsExample: By input to check and verify loops

Black-box test design techniques-

  • Decision table testing
  • All-pairs testing
  • Equivalence partitioning
  • Error guessing

White-box test design techniques-

  • Control flow testing
  • Data flow testing
  • Branch testing

Types of Black Box Testing: 

  • Functional Testing 
  • Non-functional testing 
  • Regression Testing 

Types of White Box Testing: 

  • Path Testing 
  • Loop Testing 
  • Condition testing
It is less exhaustive as compared to white box testing.It is comparatively more exhaustive than black box testing.

 

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