Explain the hierarchy of software testing levels: Unit Testing,

Question

Explain the hierarchy of software testing levels: Unit Testing, Integration Testing, and System Testing. Describe the primary goal of each level.

16 Sep 2025

Answer :

Word Count : 250

Unit testing is the first level of software testing that focuses on verifying the smallest testable components of the software, such as individual functions, classes, or modules. Its primary goal is to ensure that each unit of code performs as expected and produces the correct outputs for given inputs. By identifying errors early in the development cycle, unit testing reduces the cost ______ _________ __________ ___ _________.
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