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What Component Testing Focuses On

publish date: 2026/06/18 03:56:36.491881 UTC

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When testing composite components made up of several interacting objects, what should testing focus on?

Verifying that the component's source code follows coding style standards

Measuring the execution speed of each method in the composite component

Re-testing each individual object in isolation within the composite component

Showing that the component interface or interfaces behave according to specification

Correct Answer

Showing that the component interface or interfaces behave according to specification

Explanation

Component testing should focus on showing that the component interface behaves according to its specification. Individual object unit tests are assumed to be complete. Interface errors in composite components may not be detectable by testing individual objects because they result from interactions between the objects.

Reference

Software Engineering, Ian Sommerville, 10th edition

Quizzes you can take where this question appears

Component Testing and Interface Types