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Reusable Component Integration in System Testing

publish date: 2026/06/18 05:28:24.216491 UTC

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A company integrates a third-party authentication library into their new system during system testing. What is a specific concern that arises when testing reusable or off-the-shelf components during system testing?

The company must verify that the reusable component works as expected when integrated with their newly developed components

The third-party component must be rewritten to follow the company's internal coding standards

Third-party components are always defect-free and do not need testing

Reusable components can only be tested in isolation, never as part of an integrated system

Correct Answer

The company must verify that the reusable component works as expected when integrated with their newly developed components

Explanation

When reusable or off-the-shelf components are integrated during system testing, they must also be tested to check they work as expected when integrated with newly developed components. Reusable components may have been separately tested and used in other contexts, but their behavior in the new integration context must be verified.

Reference

Software Engineering, Ian Sommerville, 10th edition

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System Testing