Black box testing

What is black box testing?
Black Box Testing is a software test procedure that focuses on the analysis of software functionality in comparison to internal system mechanisms. Black box testing was developed as a way to analyze customer requirements, specifications, and high-level design strategies.

A black box software tester selects a set of valid and invalid input and code execution conditions and checks for valid output responses.

Black box tests are also known as functional tests or closed box tests.

A search engine is a simple example of an application that is subject to routine black box testing. A search engine user enters text into the search bar of a web browser. The search engine then finds and retrieves related user data results (output).

Black box test benefits include:

Simplicity: Makes it easy to test high-level designs and complex applications

Conserve resources: Testers concentrate on software functionality.

Test cases: Focus on software functions for the rapid development of test cases.

Offers flexibility: Specific programming skills are not required.

Black box tests also have the following disadvantages:

Test case / script design and maintenance can be problematic as black box test tools depend on known inputs.

Interacting with graphical user interfaces (GUI) can damage test scripts.

Testing only covers application functions.

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