What is Calculation Testing?
Calculation Testing ensures that all calculations in software applications are performed correctly according to defined rules and formulas. It is crucial for applications handling financial, scientific, or statistical data.
Objectives of Calculation Testing
- Validate correctness of all formulas and calculations
- Ensure consistency across different modules
- Identify rounding, truncation, or precision errors
Advantages
- Ensures reliable results for users
- Prevents business/financial losses due to incorrect calculations
- Helps maintain software credibility
Limitations
- Requires thorough test case preparation
- Complex formulas may be hard to test manually
- Time-consuming for large datasets
Calculation Testing Process
- Identify all modules performing calculations.
- Review formulas and expected results.
- Create test cases with sample inputs and expected outputs.
- Execute tests and compare results.
- Document defects and ensure corrections.
Example
Example: In an accounting software, verify that tax calculations, discounts, and total amounts are computed correctly for different invoices and scenarios.
Best Practices
- Use automated checks for repetitive calculations
- Test boundary and edge cases
- Validate rounding and decimal precision
- Document all calculation logic and expected results
