Who carries out unit testing__________________?
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Answer: B. Developers
Explanation
Developers write the source code and are therefore best positioned to verify its foundational units. Unit testing requires direct access to internal code structures which developers implement daily. Software engineering best practices assign initial verification responsibilities directly to the software author. Unit testing isolates individual functions, methods, or classes to verify their correct logical behavior. Automated unit testing frameworks allow developers to execute test suites repeatedly during development. Writing tests alongside code helps developers clarify requirements and reduce defect introduction.
Agile development teams practice test-driven development where developers write unit tests before implementation. Continuous integration pipelines automatically execute developer unit tests whenever new code is committed. Catching defects at the unit level prevents costly errors from propagating into integrated systems. Users focus on validation and overall system usability rather than inspecting raw source code. Customers evaluate business requirements and system acceptance rather than performing low-level developer tests. Independent testing teams usually perform integration and system testing instead of low-level unit testing.
- Subject
- Computer Science
- Category
- Software Engineering
- Topic
- —
- Difficulty
- medium
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