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8.5. Bug Fix Verification & Test Case Updates

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After defects identified during feature testing are addressed by the development team, QA performs verification of the implemented fixes.

The goal of this phase is to ensure that reported defects have been resolved correctly and that the implemented fixes do not introduce new issues.

8.5.1 Objectives

  • Verify that reported defects have been fixed
  • Confirm expected behavior after fixes
  • Ensure no regression introduced by fixes
  • Update test cases to reflect final behavior
  • Close verified defects

8.5.2 Testing Environment

Bug fix verification (after feature testing phase) is typically performed in the DEV environment where the fixes are deployed.

8.5.3 QA Activities

During this phase QA performs the following activities:

Test Case Updates - updating existing test cases if changes in system behavior or requirements require adjustments to test coverage - documenting new test scenarios based on defect fixes - refining test steps to reflect actual implementation - updating expected results based on verified behavior

Defect Verification (Retesting) - verifying fixes for previously reported defects - retesting the specific issue using original reproduction steps - confirming that the issue has been resolved according to the expected behavior - validating fix across different scenarios and configurations

Regression Validation - performing additional validation when necessary to ensure the fix does not negatively affect related functionality - testing adjacent features and workflows - verifying system stability after fix - checking for unintended side effects

Defect Closure - marking verified defects as Verified/Closed - documenting verification results - providing feedback on fix quality - communicating status to development team

8.5.4 Verification Approach

For Each Fixed Defect:

  1. Review the Fix – understand what was changed
  2. Retest Original Issue – verify the defect is resolved
  3. Test Related Scenarios – ensure no regression
  4. Validate Edge Cases – test boundary conditions
  5. Close or QA Failed – mark as verified or reopen if issues persist

8.5.5 Entry Criteria

Before bug fix verification begins:

  • Defects marked as QA Review
  • Fixes deployed to testing environment
  • Development team provided fix details
  • Original defect reports available with reproduction steps

8.5.6 Quality Gates

  • All fixed defects are retested and results are documented
  • Regression validation is performed on relevant areas
  • No critical/blocker regressions remain
  • All defects are either closed or reopened with new details
  • Test cases and documentation are updated
  • Status and fix quality are communicated to the development team and stakeholders

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