Mechanism to leverage the strength of the existing system while attempting to improve the accessibility or while considering an application's re-design

1. INDIUM SOFTWARE
An Independent Software Testing Firm
BUILDING A MIGRATION TESTING
STRATEGY FOR EARLY DEFECT
DETECTION
“Business Assurance through Quality Assurance”

2. © 2014 Indium Software
ENHANCING SOFTWARE QUALITY
Agenda
 What – Why – When – Migration testing performed?
 Migration Process
 Migration Success Roadmap
 Traditional Migration Testing (Post-Migration)
 New Migration Testing Strategy (Pre-Migration)
 Conclusion
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3. © 2014 Indium Software
ENHANCING SOFTWARE QUALITY
What – Why – When – Migration testing
performed?
What ?
 Mechanism to leverage the strength of the existing system while attempting to improve the
accessibility or while considering an application's re-design
Why?
 Ensure Compatibility
 Ensure existing Functionality
 High possibility of large number of defects
When?
 Traditional Process – Post Migration Testing
 New Process – Pre Migration Testing
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Analysis Conversion Re-Factoring Testing
Application Density
Dependencies
Prepare Source Code
Pre-Migration Changes
Reengineering of UI
Implement Enhancement
Validate Functionality
Performance
Migration Process

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Migration Success Roadmap
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Traditional Migration Testing
Migrations have been tested as a form of post-migration testing.
Post-Migration Testing
 Performed once the migration is completed
 The sum of errors identified are very significant
Disadvantages
 Testing to start relatively late in the overall process
 Labour intensive and causes many data-level errors
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6. © 2014 Indium Software
ENHANCING SOFTWARE QUALITY
A New Migration Testing Strategy
Pre-Migration Testing
 Testing takes place prior to the actual migration of any data, including test migrations
Pre-migration testing will assist in
 Defect Detection in Early Phase
 Risk Reduction
 Cost –Effectiveness
 Migration is released with zero defects
 Less challenges during production migration
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7. © 2014 Indium Software
ENHANCING SOFTWARE QUALITY
Defect Detection in Early Phase
 Reduction of Defects using Pre-Migration method
 Early defect identification results in transparency of Requirements
 Ease in Rework
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∑ Defects = 415
∑ Defects = 304

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Risk Reduction
 Early Completion of Development/Testing
 High in Quality
 Reduction of Downtime
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9. © 2014 Indium Software
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Cost Reduction
 Early Defect leads to low cost
 Earlier a defect is found/fixed, the cost is less
 Overall Cost is reduced in Pre-Migration testing.
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ΣCosttoFix

10. © 2014 Indium Software
ENHANCING SOFTWARE QUALITY
Conclusion
 This new technique of early defect detection in migration testing fine-tunes the application
 Reduces the laborious effort at the last moment
 Yields a good leverage in business point of view
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11. © 2014 Indium Software
ENHANCING SOFTWARE QUALITY
11
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