White Box Testing – Definition, Types, and Techniques

What is White Box Testing?

White Box Testing is a product testing procedure that depends on the application’s interior code structure. In white-box testing, an interior view of the framework, just as programming aptitudes, is utilized to configure test cases. This testing ordinarily is done at the unit level.

Here testers can see the code of the application under test.

It is additionally called Clear Box Testing, Glass Box Testing, Transparent Box Testing, Code-Based Testing, Structure-Based Testing, Logic-Coverage Testing, Logic Driven Testing, Open Box Testing, Path Driven Testing, and Structural Testing.

These names speak to the capacity to see through the product’s external shell (i.e., box) into its inward operations.

In this testing, testers should know about the inward structure, plan, and code of the application under test to confirm the input-yield stream and to improve the plan, security, and ease of use.

Techniques of White-box Testing:

The various kinds of testing strategies are:

1. Statement testing

In articulation testing, the test contents are intended to execute the code, and the inclusion is estimated by the line of code or proclamations executed by test contents.

2. Decision testing/branch testing

In Decision testing we proportion of the level of choice points (e.g. in the event that else conditions) executed out of the complete choice focuses in the application.

3. Condition testing

Condition testing includes testing the individual conditions for both the results – TRUE and FALSE. Along these lines, getting 100% condition inclusion requires practicing each condition for both TRUE and FALSE results (for n conditions, we will have 2n test contents).

4. Multiple condition testing

Testing the various blends of condition results. Thus for 100% inclusion, we will have 2^n test contents. This is comprehensive and hard to accomplish 100% inclusion.

5. Condition determination testing

It is an enhanced method of different condition testing in which the blends which do not influence the results are disposed of.

6. Path testing

Path testing includes testing completed by covering the autonomous ways in the framework where ways are executable proclamations from passage to leave focuses.

Types of White Box Testing:

• Unit testing: tests composed as a feature of the application code, which tests that every part is functioning truly to form.
• Mutation testing: A kind of unit testing that checks the heartiness and consistency of the code by characterizing tests, making little, arbitrary changes to the code, and checking whether the tests actually pass.
• Integration testing: tests explicitly intended to check reconciliation focuses between inside parts in a product framework, or mixes with outside frameworks.
• White box penetration testing: A moral programmer goes about as an educated insider, attempting to assault an application dependent on personal information on its code and environment.
• Static code analysis: Consequently recognizing weaknesses or coding mistakes in static code, utilizing predefined examples or AI examination.

Advantages and Disadvantages of White Box Testing:

Advantages:

• Code streamlining by finding shrouded blunders.
• White box test cases can be handily automated.
• Testing is more exhaustive as all code ways are typically covered.
• Testing can begin early in SDLC regardless of whether GUI is not accessible.

Disadvantages:

• White box testing can be very perplexing and costly.
• Developers who generally execute white box experiments loathe it. The white box testing by developers is not definite and can prompt creation mistakes.
• White box testing requires proficient assets, with a point-by-point comprehension of programming and implementation.
• White-box testing is time-consuming, greater programming applications set aside the effort to test completely.

Read More:

Gray Box Testing
What is Black Box Testing?