Software testing is the process of validating and verifying that an application or software is bug-free, meets the user specifications, meets the technical requirements, has accurate development and design, and handles all the exceptional cases.
You can classify software testing into two categories:
- Black Box Testing
- White Box Testing
What is Black Box Testing?
Black Box Testing is a method of software testing in which a tester does not know the internal design/ implementation/ structure of the tested item.
What is White Box Testing?
White Box Testing is a method of software testing in which the user knows the internal design/ implementation/ structure of the tested item.
Difference Between Black Box Testing and White Box Testing
|Parameter||Black Box Testing||White Box Testing|
|Meaning||It is a software testing method in which the program or the internal structure stays hidden, and the tester has no knowledge about it.||It is a software testing method in which the tester knows about the code or the internal structure and the program involved.|
|Type of Testers||Mostly, software testers do this.||Mostly, hardware developers do this.|
|Knowledge Required||The user doesn’t require knowledge regarding implementation.||A user requires knowledge for implementation.|
|Type of Testing||It is a form of external or outer software testing.||It’s the inner or internal way of software testing.|
|Source Code Access||The tester cannot access the source code of the software.||The tester is aware of the source code and internal workings of the software.|
|Interface of Operation||You can conduct Black box testing at the software interface. It requires no concern with the software’s internal logical structure.||You can conduct White box testing by ensuring that all the internal operations take place according to the specifications.|
|Purpose of Testing||It tests the functions of the software.||It tests the structure of the software.|
|Basis of Initiation||You can initiate this test on the basis of the requirement specifications document.||You can only start this type of testing software after a detailed design document.|
|Programming Knowledge||Testers don’t require a knowledge of programming.||Testers mandatorily require a knowledge of programming.|
|Assessment||This testing assesses software behavior.||This testing assesses software logic.|
|Level of Testing||Higher levels of software testing generally involve Black Box testing.||Lower levels of software testing usually involve White Box testing.|
|Other Names||You can also call it closed testing.||You can also call it clear box testing.|
|Time Consumed||It consumes less time.||It consumes more time.|
|Algorithm Testing||It does not work well for algorithm testing.||It is completely suitable and preferable for algorithm testing.|
|Methods of Testing||One can perform it using various trial and error methods and ways.||You can better test data domains and internal or inner boundaries.|
|Types of Testing||Black Box Testing types:
||White Box Testing types:
|Examples||Example: A user searching something on a search engine like Google using certain keywords.||Example: When a user inputs to check and verify the loops.|