White box testing, also known as structural testing or glass box testing, is a software testing technique that focuses on testing the internal workings of a software application. In white box testing, the tester has access to the software application's source code, design, and architecture, allowing them to create test cases that ensure that the code is functioning correctly and efficiently.
Why
The primary objective of white box testing is to verify the software application's internal logic, code structure, and design to ensure that it meets reliability, scalability, and maintainability requirements. White box testing can identify syntax errors, code vulnerabilities, and design flaws, affecting the software application's performance, security, and usability.
What
White box testing can be performed at different levels of the software testing process, such as unit testing, integration testing, and system testing.
It uses various techniques such as code coverage analysis, control flow testing, data flow testing, and path testing to ensure that all aspects of the software application's code have been tested.
During white box testing, the tester will create test cases that cover all the paths and branches in the code to ensure it functions as expected. The test cases should be based on the requirements and design documents and cover all possible scenarios.
How
White box testing can be performed at different levels of the software testing process, such as unit testing, integration testing, and system testing. It uses various techniques such as code coverage analysis, control flow testing, data flow testing, and path testing to ensure that all aspects of the software application's code have been tested.
During white box testing, the tester will create test cases that cover all the paths and branches in the code to ensure it functions as expected.
The test cases should be based on the requirements and design documents and cover all possible scenarios.
White box testing is usually performed by developers or engineers who know the software application's internal workings. It can be automated using testing tools such as JUnit, Selenium, and NUnit, which can help to speed up the testing process and improve the accuracy of the test results.