Coverage Analyzer

Analyzes test coverage by comparing source files with corresponding test files.

Execution: Runs in forked context with Explore agent for read-only analysis.

Analysis Approach

Since we can't run actual code coverage tools via CLI, this agent uses heuristic analysis:

•Find all source files
•Find corresponding test files
•Identify files without tests
•Prioritize based on importance

Priority Scoring

Layer	Priority	Rationale
Domain/UseCases	Highest (10)	Core business logic
Domain/Entities	High (8)	Data validation
Presentation/ViewModels	High (8)	State management
Infrastructure/Repositories	Medium (6)	Data access
Presentation/Views	Low (3)	UI (better suited for UI tests)
Utilities	Low (2)	Helper functions

Implementation

Find Source Files

bash

# Domain layer
find VitalArc/Domain -name "*.swift" -not -name "*Tests*"

# Presentation layer
find VitalArc/Presentation -name "*ViewModel*.swift"
find VitalArc/Presentation -name "*View.swift"

# Infrastructure
find VitalArc/Infrastructure -name "*.swift"

Find Test Files

bash

find . -name "*Tests.swift" -o -name "*Test.swift"

Match Source to Tests

For each source file, look for corresponding test:

•ProfileViewModel.swift → ProfileViewModelTests.swift
•CreateWorkoutUseCase.swift → CreateWorkoutUseCaseTests.swift

Output Format

Coverage Summary

markdown

## Test Coverage Analysis

### Summary
| Layer | Files | Tested | Coverage |
|-------|-------|--------|----------|
| Domain/UseCases | 16 | 4 | 25% |
| Domain/Entities | 12 | 2 | 17% |
| ViewModels | 10 | 3 | 30% |
| Infrastructure | 8 | 1 | 12% |
| **Total** | **46** | **10** | **22%** |

### Priority Queue (Top 10 Files to Test)

| Priority | File | Layer | Why |
|----------|------|-------|-----|
| 10 | CreateWorkoutUseCase.swift | UseCases | Core workout logic |
| 10 | CalculateRecoveryScoreUseCase.swift | UseCases | Critical calculation |
| 10 | LogFoodUseCase.swift | UseCases | Nutrition tracking |
| 8 | Workout.swift | Entities | Complex validation |
| 8 | WorkoutViewModel.swift | ViewModels | State management |
| 8 | NutritionViewModel.swift | ViewModels | Async operations |
| 6 | SwiftDataWorkoutRepository.swift | Repositories | Data persistence |
| 6 | HealthKitManager.swift | Infrastructure | HealthKit integration |
| 3 | ProfileView.swift | Views | UI (preview exists) |
| 2 | DateFormatters.swift | Utilities | Simple helpers |

### Existing Tests

| Test File | Covers |
|-----------|--------|
| WorkoutTests.swift | Workout entity |
| RecoveryScoreTests.swift | Recovery calculation |
| FoodTests.swift | Food entity |
| UserProfileTests.swift | Profile entity |
| HealthDashboardViewModelTests.swift | Dashboard VM |
| ExerciseFilterTests.swift | Filter logic |

Untested Critical Paths

markdown

### Critical Untested Code

These code paths handle important logic and have no test coverage:

#### 1. TRIMP Calculation
**File**: `CalculateStrainScoreUseCase.swift`
**Risk**: Incorrect training load calculation
**Suggested Tests**:
- Test Banister method with known inputs
- Test Edwards method zone calculations
- Test edge cases (zero duration, max HR)

#### 2. Notification Scheduling
**File**: `NotificationSettingsViewModel.swift`
**Risk**: Notifications not delivered correctly
**Suggested Tests**:
- Test reminder scheduling
- Test notification cancellation
- Test permission handling

#### 3. Food API Coordination
**File**: `FoodAPICoordinator.swift`
**Risk**: Search results missing or duplicated
**Suggested Tests**:
- Test multi-source aggregation
- Test error handling per source
- Test caching behavior

Layer-Specific Analysis

--layer=domain

markdown

## Domain Layer Coverage

### Use Cases (16 files, 4 tested)
| File | Status | Priority |
|------|--------|----------|
| CreateWorkoutUseCase.swift | Untested | High |
| GetWorkoutsUseCase.swift | Untested | Medium |
| CalculateRecoveryScoreUseCase.swift | Tested | - |
| LogFoodUseCase.swift | Untested | High |
...

### Entities (12 files, 2 tested)
| File | Status | Priority |
|------|--------|----------|
| Workout.swift | Tested | - |
| Food.swift | Tested | - |
| Exercise.swift | Untested | Medium |
| UserProfile.swift | Tested | - |
...

--layer=presentation

markdown

## Presentation Layer Coverage

### ViewModels (10 files, 3 tested)
| File | Status | Has Preview |
|------|--------|-------------|
| WorkoutViewModel.swift | Untested | Yes |
| ProfileViewModel.swift | Untested | Yes |
| HealthDashboardViewModel.swift | Tested | Yes |
| NutritionViewModel.swift | Untested | Yes |
...

### Views (70 files)
Views are primarily covered by SwiftUI Previews.
**Preview Coverage**: 68% (48/70 have #Preview)

Recommendations

markdown

## Testing Recommendations

### Quick Wins (Easy to test, high value)
1. **Entity tests** - Pure data, no dependencies
2. **Utility tests** - Isolated helper functions
3. **ViewModel state tests** - Predictable state changes

### High Impact (Complex but critical)
1. **Use case tests** - Core business logic
2. **Repository tests** - Data integrity
3. **Integration tests** - End-to-end flows

### Suggested Test Sprint
Week 1: All use cases (16 files)
Week 2: All ViewModels (10 files)
Week 3: Critical infrastructure (5 files)

**Estimated effort**: 31 test files
**Target coverage**: 70%+

Error Handling

No Test Directory

markdown

## Test Directory Not Found

No test files found in expected locations:
- VitalArcTests/
- Tests/

Create test target or specify custom test path.