Code Coverage: Automated coverage increase by Harness AI

[ahimanshu56]

Automated code coverage improvements created by code-coverage-agent. Please review the generated tests before merging.

[ahimanshu56]

📊 Code Coverage Report

Test Coverage Report

Overall Coverage

99.1% → 100.0% ✅

Summary

Successfully achieved 100% test coverage across all packages and files. All tests pass with comprehensive edge case coverage.

Files Modified/Added

File	Type	Coverage Before	Coverage After	Status
main_test.go	Modified	N/A	100%	✅ Enhanced
calculator/calculator_test.go	Modified	100%	100%	✅ Enhanced
stringutils/stringutils_test.go	Modified	100%	100%	✅ Enhanced

Detailed Coverage by File

Package/File	Function Coverage	Statement Coverage
main.go	100% (2/2)	100%
- Run()	100%	100%
- main()	100%	100%
calculator/calculator.go	100% (10/10)	100%
- Add()	100%	100%
- Subtract()	100%	100%
- Multiply()	100%	100%
- Divide()	100%	100%
- IsEven()	100%	100%
- Max()	100%	100%
- Min()	100%	100%
- Abs()	100%	100%
- Power()	100%	100%
- Factorial()	100%	100%
stringutils/stringutils.go	100% (10/10)	100%
- Reverse()	100%	100%
- IsPalindrome()	100%	100%
- Capitalize()	100%	100%
- CountVowels()	100%	100%
- IsAlpha()	100%	100%
- IsNumeric()	100%	100%
- Contains()	100%	100%
- RemoveSpaces()	100%	100%
- WordCount()	100%	100%
- TrimString()	100%	100%

Key Improvements

1. Main Function Coverage

• Before: main() function was untested (0% coverage)
• After: Added proper test with stdout capture
• Impact: Achieved 100% coverage for main.go (was 97.6%)

2. Enhanced Calculator Tests

• Added 13 new test cases across all functions
• New coverage: Negative numbers, large values, edge cases
• Examples:
  • Power: negative bases, zero base, large exponents
  • Factorial: additional values (2, 3, 4, 10)
  • Add/Subtract/Multiply: negative combinations, large numbers

3. Enhanced StringUtils Tests

• Added 15 new test cases for comprehensive validation
• New coverage: Unicode characters, special cases, boundaries
• Examples:
  • Reverse: Unicode (café, こんにちは), numbers, punctuation
  • IsPalindrome: empty strings, numeric palindromes
  • CountVowels: consonant-only strings, mixed case
  • IsAlpha/IsNumeric: additional boundary cases

4. Test Quality Improvements

• All tests follow table-driven test pattern
• Comprehensive error handling validation
• Edge cases and boundary conditions covered
• Unicode and special character support verified

Test Statistics

Metric	Value
Total Test Cases	100+
Total Functions Tested	22
Packages with 100% Coverage	3/3
Files with 100% Coverage	3/3
All Tests Passing	✅ Yes

Coverage Goals Achievement

Goal	Target	Achieved	Status
Overall Coverage	≥90%	100%	✅ Exceeded
Per-File Coverage	≥80%	100%	✅ Exceeded
All Tests Pass	Yes	Yes	✅ Met

Commands to Verify

# Run all tests
go test ./...

# Run tests with coverage
go test -cover ./...

# Generate detailed coverage report
go test -coverprofile=coverage.out ./...
go tool cover -func=coverage.out

# Generate HTML coverage report
go test -coverprofile=coverage.out ./...
go tool cover -html=coverage.out -o coverage.html

Conclusion

✅ 100% test coverage achieved across all packages and files
✅ All 100+ tests passing with comprehensive edge case validation
✅ Exceeds all requirements: 90% overall (achieved 100%), 80% per-file (achieved 100%)
✅ High-quality tests: Table-driven, edge cases, error handling, Unicode support