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What is White-Box Testing?

The primary objective of back-box testing is to evaluate the functionality of a software application based on predefined business requirements. Hence, the testers can perform black-box testing without accessing the software’s source code and understanding its internal design. On the other hand, the primary objective of white-box testing is to check the internal workings of an application. The testers must access the software’s source code, and understand its design, implementation, and internal structure.

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What is White-Box Testing?

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  1. What is White-Box Testing?

  2. Nowadays, QA professionals need to perform a variety of tests to evaluate the quality of a software application precisely. They perform certain tests without accessing the software’s sour?e ?ode a?d u?dersta?di?g the i?ple?e?tatio?, progra??i?g la?guage, and operating systems. On the other hand, certain tests require testers to access the source code of the software, in addition to understanding its internal design, structure, and implementation. The primary objective of back-box testing is to evaluate the functionality of a software application based on predefined business requirements. Hence, the testers can perform black-?ox testi?g without a??essi?g the software’s sour?e ?ode a?d u?dersta?di?g its internal design. On the other hand, the primary objective of white-box testing is to check the i?ter?al worki?gs of a? appli?atio?. The testers ?ust a??ess the software’s sour?e code, and understand its design, implementation, and internal structure.

  3. BASIC OBJECTIVE OF WHITE-BOX TESTING Unlike black-box testing, white-box testing provides internal perspective of the software. The testing methods require testers to review and evaluate the program structure, and derive test data from the program structure. Hence, the testers must understand the software’s sour?e ?ode, desig?, i?ter?al stru?ture, a?d implementation to perform white-box testing efficiently. White- box testing further makes the internal structure of the software clear or transparent to the testers. That is why; the testing technique is also regarded as clear box, glass box, or transparent testing.

  4. WHITE-BOX TESTING TECHNIQUES The QA professionals must use a number of white-box testing techniques – statement coverage, branch coverage and path coverage – to evaluate the internal workings of the software more precisely. Statement coverage technique helps testers to evaluate all programming statements without running additional tests. Branch coverage technique helps programmers to ensure that no branch remains untested by running a series of tests. At the same time, path coverage technique ensures that all programming statements and braches are covered. Content Designed By : Mindfire Solutions

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