What is White Box Testing? Procedure, best practices, pros and cons

Decision NodeA decision node is used to determine the next node for a given procedure as per the result of the last operation carried out. Gateway WAF — keep applications and APIs inside your network safe with Imperva Gateway WAF. Prevent any type of DDoS attack, of any size, from preventing access to your website and network infrastructure. Redesigning code and rewriting code needs test cases to be written again.

  • This means that the tests will fail when the implementation changes as the test is tightly coupled to the implementation.
  • However, it also has the disadvantages of requiring high technical skills and being time-consuming and expensive.
  • The term ‘white’ comes from the metaphor of a white-box, which is transparent and allows the user to see inside.
  • The main goal here is to identify any inefficient, redundant, or broken paths.
  • Lastly, statement coverage is a technique in white box testing that ensures every executable statement in the code is run and tested at least once.

It compares a sequence of specified inputs to desired or expected outputs to identify bugs when detailed information does not provide the desired outcome. White box testing is a software testing method in which the internal structure and implementation of the software being tested are known and used as the basis for designing the test cases. It involves testing the software at the code level and requires a deep understanding of the code and the design of the software. It is also known as glass box, transparent box, clear box, or structural testing. White box penetration testing, also known as crystal or oblique box pen testing, provides the tester with complete network and system data, including network maps and passwords. An engagement model is a strategy that defines the basis of collaboration between the software development company and the client.

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One of the main goals of white box testing is to cover the source code as comprehensively as possible. Code coverage is a metric that shows how much of an application’s code has unit tests checking its functionality. White box testing is also known as structural testing or code-based testing, and it is used to test the software’s internal logic, flow, and structure.

what is white-box test design technique

The White Box Test method is the one that looks at the code and structure of the product to be tested and uses that knowledge to perform the tests. This method is used in the Unit Testing phase, although it can also occur in other stages such as Integration Tests. For the execution of this method, the tester or the person who will use this method must have extensive knowledge of the technology used to develop the program. The dark box technique targets complex frameworks with a clear discovery approach, which empowers essentially anybody from engineers to analyzers to end-clients to play out the tests. The created experiments are pointed toward finding and wiping out surrenders in the design and shutting any holes that would empower inappropriate utilization of the product.

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Testers read the software specifications and design test cases to execute different code-paths through the code. White-box testing is a software testing method that tests a software’s internal structures or workings instead of its functionality. Testing methoddetermines the correctness of the program’s output by evaluating and examining the source code of the program and its parts during the testing process. White box techniques can test most types of programs, such as those written inC/C++, Java or any other programming language. The main distinctions between black box testing and white box testing have been examined in this article.


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This method guarantees that the several branches of each decision point are executed successfully. Also known as equivalence class partitioning , this black box testing technique calls for the input values for the application or system to be classified based on outcome similarity. The granularity offered by white box testing is an effective way to crush bugs. This transparent and rigorous testing approach also gives insights into all the possible outputs the application can theoretically generate. White box testing is leveraged to spot hidden internal errors and optimize code. Black box testing focuses on understanding user experience, which means testers do not require in-depth technical knowledge to carry it out.

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This step requires testers to have in-depth knowledge of the code, which is why it is usually performed by the developer. The testing team need not have in-depth knowledge of programming to execute this testing methodology, nor does it need expertise in implementation. This what is white-box test design technique method tests the internal coding and infrastructure of the software. It can be carried out by programmers and is suitable for Drupal specialists. Performance testing – This type of testing measures how well an application or system performs under various conditions.

what is white-box test design technique

White box testing can also lead to false conclusions about the performance of a product or system. White box testing can help you discover vulnerabilities in your app that might be exploited by hackers. By testing your app in a controlled environment, you can find any potential security issues that could be exploited by hackers. White box testing can help you find and fix issues before they cause damage.

White Box Testing Techniques

To separate between discovery, dim box and white-box testing methods, we’ll intently look at the benefits and weaknesses of every one of them. 20+ years IT expertise in system engineering, security analysis, https://www.globalcloudteam.com/ solutions architecture. Proficient in OS , programming (C++, Python, HTML/CSS/JS, Bash), DB . Skilled in scripting , DevOps (microservices, containers, CI/CD), web development (Node.js, React, Angular).

what is white-box test design technique

The purpose of decision coverage testing is to cover and validate all available source code by guaranteeing that each branch of each potential decision point is traversed at least once. The first and most critical step is to analyze the source code of the application being tested. A tester should be familiar with the internal structure of the code, as this will help in testing the application. A better understanding of source code will also help in identifying and writing the critical test cases that trigger security vulnerabilities and helps in achieving 100% test coverage. Because application security is the primary goal, testers should be aware of the product’s security risks.

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The formula above determines the number of test plans and cases executed for testing components or applications. It allows finding hidden errors to find internal errors because it checks and works by internal functionality. Required knowledge of the internals of the software under test to be tested. This step involves the study of code at runtime to examine the resource utilization, not accessed areas of the code, time taken by various methods and operations and so on.

It can test paths within a unit, paths between units during integration, and between subsystems during a system–level test. Though this method of test design can uncover many errors or problems, it has the potential to miss unimplemented parts of the specification or missing requirements. White-box and black-box testing can be improved through some best practices.

How To Effectively Perform White Box Testing

White-box and black-box are two common test case design techniques used in the software testing life cycle . They differ in the level of access and knowledge they require from the testers about the internal structure and logic of the software. In this article, you will learn how to compare and contrast these techniques and when to use them for effective testing. Decomposition is a powerful white box testing technique because it reduces the system into its parts.