It is based on evaluating the code to test which line of the code is causing the error. White-box testing can be applied at the unit, integration and system levels of the software testing process. Dies kann durch Black-Box-Tests leichter festgestellt werden als durch White-Box-Tests. It can test paths within a unit, paths between units during integration, and between subsystems during a system–level test. White-box testing requires a programmer with a high level of knowledge due to the complexity of the level of testing that needs to be done. It is also called glass box testing or clear box testing or structural testing. White box testing is done at the lower levels of testing such as unit testing and integration testing, whereas black box testing is done at a higher level testing such as system testing, acceptance testing, security testing, etc. The following are the three basic steps that white-box testing takes in order to create test cases: White-box testing is one of the two biggest testing methods used today. Method of software testing of internal structure, It has been suggested that this article be, Learn how and when to remove this template message, http://www.testingstandards.co.uk/Component%20Testing.pdf, http://agile.csc.ncsu.edu/SEMaterials/WhiteBox.pdf, http://research.microsoft.com/en-us/projects/pex/, https://en.wikipedia.org/w/index.php?title=White-box_testing&oldid=982064871, Wikipedia articles needing factual verification from February 2013, Short description is different from Wikidata, Articles to be merged from September 2020, Articles needing additional references from February 2013, All articles needing additional references, Articles with unsourced statements from November 2019, Articles with unsourced statements from October 2015, Creative Commons Attribution-ShareAlike License. Das System wird deshalb als Blackbox bezeichnet, bei dem nur die Schnittstellen zur Außenwelt relevant sind, nicht der Ablauf innerhalb des Systems selbst. D.h. Tests werden ohne Kenntnisse über die innere Funktionsweise/ Implementierung des zu testenden Systems entwickelt. Will man ein System auch in seinen Teilsystemen testen, benötigt man dazu Kenntnisse über die innere Funktionsweise des zu testenden Systems. Pros: Cons: 1. https://www.guru99.com/white-box-testing.html This Beginner’s tutorial explains White Box Testing in software engineering. In white-box testing an internal perspective of the system, as well as programming skills, are used to design test cases. In this method, testing is based on coverage of code statements, branches, paths or conditions. Input involves different types of requirements, functional specifications, detailed designing of documents, proper source code and security specifications. White-box testing (also known as clear box testing, glass box testing, transparent box testing, and structural testing) is a method of software testing that tests internal structures or workings of an application, as opposed to its functionality (i.e. White box is a type of penetration testing that assesses an application’s internal working structure and identifies its potential security loopholes. Offered by University of Minnesota. The code under test could be rewritten to implement the same functionality in a different way that invalidates the assumptions baked into the test. [citation needed]. White-box testing (also known as clear box testing, glass box testing, transparent box testing, and structural testing) looks inside the software that is being tested and uses that knowledge as part of the testing process. in-circuit testing (ICT). Once the source code is understood then the source code can be analyzed for test cases to be created. BCS SIGIST (British Computer Society Specialist Interest Group in Software Testing): Diese Seite wurde zuletzt am 19. White-box testing is the use of these techniques as guidelines to create an error-free environment by examining all code. White box testing does not separate the program and the testing environment. White-box testing requires internal knowledge of the system and programming skills. Selbst wenn ein Softwaresystem in Bezug auf ein Hinlänglichkeitskriterium erfolgreich getestet wurde, schließt das nicht aus, dass es Fehler enthält. White box testing is a predominantly used software testing technique. Zudem sei genannt, dass die Unterscheidung zwischen Black-Box-Test und White-Box-Test teilweise von der Perspektive abhängt. [2] These different techniques exercise every visible path of the source code to minimize errors and create an error-free environment. This could result in tests that fail unnecessarily or, in the worst case, tests that now give false positives and mask errors in the code. Der Fall, dass im Graphen des Kontrollflusses Kanten fehlen, wird nicht erkannt. Jetzt ausprobieren! White Box Testing Pros and Cons. 2. The focal points of this project is the withdrawal, the deposit, and the transfer operations. Although traditional testers tended to think of white-box testing as being done at the unit level, it is used for integration and system testing more frequently today. White box testing is a type of testing where the tester can see the code. Je nach Art und Struktur der zu testenden Software können andere Maße für ein System als Ganzes oder für Module sinnvoll sein. Blackboxtest. 3. Als Robo Advisor der neuen Generation betreibt Whitebox ein aktives Risikomanagement. This makes it preferable when programmers wish to test early application builds. White box test design is sophisticated, requires relevant programming skills, and the resources who have a thorough knowledge of the application design. White-box testing verifies code according to design specifications and uncovers application vulnerabilities. White-Box-Tests werden eingesetzt, um Fehler in den Teilkomponenten aufzudecken und zu lokalisieren, sind aber aufgrund ihrer Methodik kein geeignetes Werkzeug, Fehler gegenüber der Spezifikation aufzudecken. Nur nach außen sichtbares Verhalten fließt in den Test ein. The resulting test can be fragile because they are tightly coupled to the specific implementation of the thing being tested. sowie Dokumentation). [4] That can be the source code, requirements, input space descriptions, or one of dozens of types of design models. If we go by the definition, “White box testing” (also known as clear, glass box or structural testing) is a testing technique which evaluates the code and the internal structure of a program. Processing involves performing risk analysis to guide whole testing process, proper test plan, execute test cases and communicate results. This type of testing has tight coupling with the source of the application under test. Kantenüberdeckung wird im Allgemeinen als minimales Testkriterium angesehen. black-box testing). 3., überarbeitete und aktualisierte Auflage, dpunkt.verlag GmbH, Heidelberg 2005, ISBN 3-89864-358-1. The whole point of white-box testing is the ability to know which line of the code is being executed and being able to identify what the correct output should be.[2]. The main purposes of this type of testing are to test the inner workings of the software, as well as strengthen its security, and improve its usability and design. White box testing and black box testing are both important for enterprise applications. Managing the test code and the scripts are additional tasks and require extra efforts. White-Box-Testing. The programmer must have a deep understanding of the application to know what kinds of test cases to create so that every visible path is exercised for testing. Für letzteres benötigt man Black-Box-Tests. On some occasions, it is not realistic to be able to test every single existing condition of the application and some conditions will be untested. Independent Testing Team usually performs this type of testing during the software testing life cycle. In white-box testing, an internal perspective of the system, as well as programming skills, are used to design test cases. Weil die Entwickler der Tests Kenntnisse über die innere Funktionsweise des zu testenden Systems besitzen müssen, werden White-Box-Tests von demselben Team, häufig sogar von denselben Entwicklern entwickelt wie die zu testenden Komponenten. Qualitätskriterien): Die Zahl der benötigten Testfälle für die einzelnen Maße unterscheidet sich z. T. deutlich. 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