Difference Between Black Box Testing and White Box Testing

By Mohit Uniyal|Updated : May 6th, 2022

Difference Between Black Box Testing and White Box Testing: Both the Black Box Testing and the White Box Testing are the Software testing methods. Black Box Testing is a technique that examines the functionality of the software without taking knowledge of its internal structure or coding. whereas White-box testing examines the internal workings system. This Testing is based on the range of code statements, pathways, branches, or conditions in this approach.

Here, we will first briefly explore Black Box Testing and White Box Testing then we will further discuss the complete explanation of the difference between the Black Box Testing and White Box Testing. We are going to discuss some more differences in several parameters below.

Table of Content

What is a Black Box Testing?

In Black-box testing, a programmer/tester does not have any knowledge about the internal working system of software. This testing is a high level of testing that focuses on the behaviour of the working software. Black-box testing involves testing from an end-user perspective. It can be enforced to virtually every level of software testing: system, unit, integration, and acceptance. This testing is also called closed testing.

Types of Black Box Testing are Functional Testing, Non-functional testing, and Regression Testing.

What is White Box Testing?

White-box testing is a technique that checks the internal functioning of the given system. This testing is based on the coverage of code statements, branches, and conditions. It is considered to be low-level testing. White-box testing is also called a clear box, glass box, and transparent box testing. This white-box Testing method considers that the path of the logic in a program is known already.

Types of White Box Testing are Path Testing, Loop Testing, and Condition testing.

Difference Between Black Box Testing vs White Box Testing?

As we have already seen a brief introduction to Black Box Testing vs White Box Testing. We will now look into and discuss the difference between Black Box Testing vs White Box Testing. The crucial differences between these two test methods are explained in the table provided below:

Difference Between Black Box Testing vs White Box Testing

Black Box Testing

White Box Testing

In this testing method, the programming code of the software is hidden and nothing is known about it.

In this testing method, the programmer or tester must have knowledge about the internal programming code of the software.

Black Box Testing is mostly done by software testers.

White Box Testing is mostly done by developers.

No knowledge of implementation is necessary.

Knowledge of implementation is necessary.

This testing method can be referred to as the outer or external software testing method.

This testing method is the inner or the internal software testing method.

This test is a functional test of the software.

This test is a structural test of the software.

This testing method can be initiated on the basis of the requirement specifications document.

This type of testing method of software is started after a detailed design document.

For this testing method, no knowledge of programming is mandatory.

For this testing method, the knowledge of programming is mandatory.

This testing is the behaviour testing of the software.

this testing is the logic testing of the software.

This testing is higher levels of software testing.

This testing is applicable to the lower levels of software testing.

This testing is also known as closed testing and it consumes the least time.

This testing is also known as clear box testing and it consumes the most time.

Black Box Testing is not suitable for algorithm testing and it can be done by trial, error ways, and methods.

White Box Testing is suitable for algorithm testing and domains of data along with inner boundaries can be better tested.

Searching something on google by using keywords is an example of Black Box Testing.

By input to check and verify loops is an example of White Box Testing.

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FAQs

  • The major difference between Black Box Testing vs White Box Testing is that the Black Box Testing is a method in which the internal structure or design of some item being tested is not known to the tester while the White Box Testing is a method in which the internal structure or design of the item being tested and that is known to the tester. 

  • Black box testing is able to check more features of the software, ahead aspects, and functionality. A non-operating test does not examine whether the software can carry out a specific action but in what way it executes that action. Black box tests can revels that whether the software is easy to understand for its users and fit for use or not.

  • White box testing largely deals with the interactions and flow of the modules while unit testing tells you granular information on the elements individually. They operate in coexistence, yet there is a consequence but fine difference in what you will be uncovering in each approach.

  • The term “white box” is used for the internal perspective of the given system and this name denotes the ability to see through the software's outer part into its inner workings for the tester. This test is performed by the developers and further sent to the software testing team. The main objective of this white-box testing method is to test the infrastructure of an application. The clear box or white box, or transparent box are the other names for White Box Testing.

  • A Black-Box Testing method is a specification of requirements that are done by the customer. This is another type of manual testing. This software testing technique examines the functionality of the working software without having knowledge of its internal coding. A Black-Box Testing method does not need any programming knowledge of the software

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