Regression testing ensures that new code changes do not negatively impact existing functionality. Depending on the scope, frequency, and purpose of testing, there are several types of regression testing teams can adopt.
Common types of regression testing include:
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Corrective Regression Testing: Reuses existing test cases when no changes have been made to the software design.
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Retest-All Regression Testing: Executes all test cases to ensure overall stability after significant updates.
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Selective Regression Testing: Runs only a subset of test cases affected by recent changes, saving time and effort.
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Progressive Regression Testing: Includes new test cases along with impacted existing ones when new functionality is added.
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Partial Regression Testing: Focuses on testing specific modules or components affected by changes.
Understanding these types helps teams choose the right regression strategy, balancing efficiency, coverage, and risk. Using the appropriate approach ensures software remains reliable even as features evolve and updates are introduced.