# Injurious Affection Calculator - Test Results

## Test Summary

All tests passed successfully on 2025-11-15.

### Test 1: Residential Construction Impact
**Input:** `sample_residential_construction_impact.json`
- Property Type: Residential duplex (2 units)
- Distance: 40m from construction
- Duration: 6 months
- Equipment: Pile driver (95 dBA), excavator, concrete mixer

**Results:**
- Noise Impact: $5,760 (severe, 86.5 dBA at property, 20% rent reduction)
- Dust Impact: $20,000 (high zone, weekly cleaning + health impacts)
- Vibration: $2,500 (cosmetic damage, 8.5 mm/s PPV)
- **Total: $28,260**

**Status:** ✓ PASSED

### Test 2: Commercial Traffic Impact
**Input:** `sample_commercial_traffic_impact.json`
- Property Type: Commercial restaurant
- Distance: 25m from construction
- Duration: 9 months
- Traffic Reduction: 35%
- Permanent Visual Impact: 8%

**Results:**
- Noise Impact: $6,750 (severe, 85.6 dBA)
- Dust Impact: $19,000 (moderate zone, bi-weekly cleaning)
- Traffic Disruption: $84,009 (lost profit from 35% traffic reduction)
- Business Loss: $15,000 (operational disruption)
- Visual Impact: $96,000 (permanent, 8% value reduction)
- **Total: $220,759**

**Status:** ✓ PASSED

### Test 3: Industrial Minimal Impact
**Input:** `sample_industrial_minimal_impact.json`
- Property Type: Industrial manufacturing
- Distance: 60m from construction
- Duration: 12 months
- Background Noise: 70 dBA (high ambient)

**Results:**
- Noise Impact: $0 (70 dBA at property, below 85 dBA industrial threshold)
- Dust Impact: $9,600 (low zone, monthly cleaning)
- Vibration: $0 (2.0 mm/s, below threshold)
- **Total: $9,600**

**Status:** ✓ PASSED

### Test 4: Python API Usage
**Method:** Direct Python API calls (not JSON input)

**Results:**
- PropertyDetails, ConstructionActivity, MarketParameters classes: ✓ Working
- calculate_injurious_affection() function: ✓ Working
- All dataclass structures: ✓ Working
- **Total: $28,260** (matches Test 1)

**Status:** ✓ PASSED

## Validation Checks

### Noise Attenuation Formula
- ✓ 6 dBA per doubling rule implemented correctly
- ✓ Distance calculations accurate (log₂ formula)
- ✓ Equipment-specific noise levels tracked
- ✓ Maximum noise level logic working

### Threshold Classifications
- ✓ Residential: 65 dBA (moderate), 75 dBA (severe)
- ✓ Commercial: 70 dBA (moderate), 80 dBA (severe)
- ✓ Industrial: 85 dBA threshold
- ✓ Night work multiplier (1.5×) for residential

### Dust Impact Zones
- ✓ High zone: Weekly cleaning
- ✓ Moderate zone: Bi-weekly cleaning
- ✓ Low zone: Monthly cleaning
- ✓ Health impacts for high zone + 6+ months

### Vibration Thresholds
- ✓ Cosmetic: 5-12 mm/s → $2,500
- ✓ Structural: >12 mm/s → $25,000
- ✓ No damage: <5 mm/s → $0

### Traffic Calculations
- ✓ Revenue-based traffic estimation
- ✓ Conversion rate application (2%)
- ✓ Margin calculation (40%)
- ✓ Daily to total period conversion

### Visual Impact
- ✓ Percentage-based value reduction
- ✓ Capitalization calculation
- ✓ Optional visual impact handling

## Edge Cases Tested

1. **Zero impacts:** Industrial property with all impacts below threshold → ✓ Works
2. **Multiple equipment:** Correctly uses maximum noise level → ✓ Works
3. **Commercial without revenue:** Defaults to estimated traffic → ✓ Works
4. **Residential without rental income:** Business loss = 0 → ✓ Works
5. **No visual impact:** Optional field handled correctly → ✓ Works

## Performance

- Calculation time: <1 second per scenario
- JSON parsing: Fast, no errors
- Output file generation: Working correctly
- Memory usage: Minimal (standard dataclasses)

## Code Quality

- ✓ Python syntax validation passed
- ✓ No import errors
- ✓ All dataclasses properly defined
- ✓ Type hints present
- ✓ Docstrings comprehensive
- ✓ Error handling implemented

## Documentation Quality

- ✓ README.md: Comprehensive (11KB)
- ✓ QUICKSTART.md: User-friendly (7.4KB)
- ✓ SKILL.md: Technical depth (20KB)
- ✓ Sample inputs: 3 scenarios with detailed metadata
- ✓ Code comments: Clear and detailed

## Integration Readiness

The calculator is ready for integration with:
1. Expropriation compensation frameworks
2. Construction impact assessment workflows
3. Property damage claim processes
4. Expert witness report generation

## Recommendations for Future Enhancement

1. **Multi-receptor analysis:** Calculate impacts for multiple properties simultaneously
2. **Time-varying impacts:** Model construction phases with different equipment
3. **Barrier modeling:** Account for noise barriers and reflections
4. **Sensitivity analysis:** Run scenarios with parameter ranges
5. **Report generation:** Auto-generate expert witness reports in PDF format

## Conclusion

All tests passed. Calculator is production-ready and follows established patterns from other calculators in the codebase (Option Valuation, Default Calculator, IFRS16 Calculator).

**Overall Status: ✓ PRODUCTION READY**

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Test Date: 2025-11-15
Tested By: Claude Code
Version: 1.0.0