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:
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White Box Testing types:
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| 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. |
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