Functionality testing of a program's constituent components is done via unit testing.
<h3>What is Unit Testing?</h3>
- Program testing known as "unit testing" involves testing individual software components.
- When developing an application, unit testing is done on the software product.
- Unit testing is a software testing technique used in computer programming to evaluate the suitability of individual units of source code—sets of one or more computer program modules along with related control data, usage processes, and operating procedures.
- The smallest testable components of an application, known as units, are separately and independently examined for appropriate operation as part of the unit testing phase of software development.
- Software developers and occasionally QA employees use this testing methodology when the software is still in the development stage.
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