How is debugging different to testing?

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BlackTom AI · Accepted Answer

Topic focus: understanding the distinction between debugging and testing in software quality assurance.
Option a: 'They are exactly the same!' This claim ignores the practical roles: testing is about finding where issues exist, validating behavior, and exploring the software under various conditions, while debugging is the focused process of identifying the root cause of a defect and applying a fix. Treating them as identical confuses activity type and purpose.
Option b: 'Debugging is searching for errors while testing is fixing errors.' Here the verbs are reversed relative to common practice. Testing is not primarily about fixing; it is about uncovering defects and verifying system behavior. Debugging is the subsequent corrective activity that follows defect detection.
Option c: 'Debugging creates errors while testing fixes errors.' This is counterintuitive: debugging is a diagnostic activity aimed at removing faults, not creating them; testing does not inherently fix errors, though it can reveal failures that require fixes. The statement also reverses typical causality between actions.
Option d: 'Testing is searching for errors while debugging is fixing errors.' This option aligns with standard definitions: testing probes the product to uncover defects, validating behavior and identifying where problems occur; debugging is the investigative and corrective process that follows to eliminate the root causes and implement fixes. The sequence and roles described here reflect common practice in software development and quality assurance.

How is debugging different to testing?

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