# Comprehensive Test Coverage Plan - TraceRTM 2025

## Target Metrics

- **Coverage:** 85-95% across all services
- **Pass Rate:** 100% (all tests passing)
- **Lint Errors:** 0
- **Type Errors:** 0
- **Compile Errors:** 0

## Backend Testing (Go)

### Unit Tests (70% of coverage)

**Service Tests (17 services)**
```
backend/tests/unit/services/
├── project_service_test.go (90% coverage)
├── item_service_test.go (90% coverage)
├── link_service_test.go (90% coverage)
├── agent_service_test.go (90% coverage)
├── search_service_test.go (95% coverage)
├── graph_service_test.go (85% coverage)
├── cache_service_test.go (95% coverage)
├── event_service_test.go (90% coverage)
├── nats_service_test.go (85% coverage)
├── neo4j_service_test.go (85% coverage)
├── embeddings_service_test.go (95% coverage)
├── rag_service_test.go (90% coverage)
├── workflow_service_test.go (85% coverage)
├── auth_service_test.go (95% coverage)
├── notification_service_test.go (85% coverage)
├── validation_service_test.go (95% coverage)
└── utility_service_test.go (90% coverage)
```

**Handler Tests (7 handlers)**
```
backend/tests/unit/handlers/
├── project_handler_test.go (90% coverage)
├── item_handler_test.go (90% coverage)
├── link_handler_test.go (90% coverage)
├── agent_handler_test.go (90% coverage)
├── search_handler_test.go (95% coverage)
├── graph_handler_test.go (85% coverage)
└── websocket_handler_test.go (85% coverage)
```

**Middleware Tests**
```
backend/tests/unit/middleware/
├── auth_middleware_test.go (95% coverage)
├── cors_middleware_test.go (90% coverage)
├── error_handler_test.go (90% coverage)
└── request_logger_test.go (85% coverage)
```

### Integration Tests (20% of coverage)

**Service Integration**
```
backend/tests/integration/
├── service_integration_test.go
├── database_integration_test.go
├── cache_integration_test.go
├── event_integration_test.go
├── search_integration_test.go
├── graph_integration_test.go
└── workflow_integration_test.go
```

**API Integration**
```
backend/tests/integration/api/
├── project_api_test.go
├── item_api_test.go
├── link_api_test.go
├── agent_api_test.go
├── search_api_test.go
├── graph_api_test.go
└── websocket_api_test.go
```

### E2E Tests (10% of coverage)

```
backend/tests/e2e/
├── project_workflow_test.go
├── item_workflow_test.go
├── link_workflow_test.go
├── search_workflow_test.go
├── graph_workflow_test.go
├── agent_workflow_test.go
└── performance_test.go
```

## Frontend Testing (TypeScript/React)

### Unit Tests (70% of coverage)

**Component Tests**
```
frontend/tests/unit/components/
├── ProjectList.test.tsx (85% coverage)
├── ItemDetail.test.tsx (85% coverage)
├── LinkViewer.test.tsx (85% coverage)
├── SearchBar.test.tsx (90% coverage)
├── GraphViewer.test.tsx (80% coverage)
└── Dashboard.test.tsx (85% coverage)
```

**Hook Tests**
```
frontend/tests/unit/hooks/
├── useProject.test.ts (90% coverage)
├── useItem.test.ts (90% coverage)
├── useSearch.test.ts (90% coverage)
├── useCache.test.ts (90% coverage)
└── useWebSocket.test.ts (85% coverage)
```

**Utility Tests**
```
frontend/tests/unit/utils/
├── api.test.ts (95% coverage)
├── cache.test.ts (95% coverage)
├── validation.test.ts (95% coverage)
└── formatting.test.ts (90% coverage)
```

### Integration Tests (20% of coverage)

```
frontend/tests/integration/
├── api_integration.test.ts
├── cache_integration.test.ts
├── websocket_integration.test.ts
└── auth_integration.test.ts
```

### E2E Tests (10% of coverage)

```
frontend/tests/e2e/
├── project_workflow.spec.ts
├── item_workflow.spec.ts
├── search_workflow.spec.ts
├── graph_workflow.spec.ts
└── performance.spec.ts
```


## Phase-by-Phase Test Implementation

### Phase 1: AI Foundation (Weeks 1-2)

**Services to Test**
- EmbeddingsService (95% coverage)
- SearchService (95% coverage)
- RAGService (90% coverage)
- CacheService (95% coverage)

**Test Files to Create**
```
backend/tests/unit/services/embeddings_service_test.go
backend/tests/unit/services/search_service_test.go
backend/tests/unit/services/rag_service_test.go
backend/tests/integration/search_integration_test.go
backend/tests/e2e/search_workflow_test.go
```

**Test Cases**
- Embedding generation
- Vector search
- Hybrid search (full-text + vector)
- Reranking
- Caching
- Error handling

### Phase 2: Event Sourcing (Weeks 3-4)

**Services to Test**
- EventService (90% coverage)
- NATSService (85% coverage)
- ValidationService (95% coverage)

**Test Files to Create**
```
backend/tests/unit/services/event_service_test.go
backend/tests/unit/services/nats_service_test.go
backend/tests/integration/event_integration_test.go
backend/tests/e2e/event_workflow_test.go
```

**Test Cases**
- Event creation
- Event replay
- Event snapshots
- Event publishing
- Event subscription
- Error recovery

### Phase 3: Distributed Systems (Weeks 5-6)

**Services to Test**
- CacheService (95% coverage)
- GraphService (85% coverage)
- Neo4jService (85% coverage)

**Test Files to Create**
```
backend/tests/unit/services/graph_service_test.go
backend/tests/unit/services/neo4j_service_test.go
backend/tests/integration/cache_integration_test.go
backend/tests/integration/graph_integration_test.go
backend/tests/e2e/graph_workflow_test.go
```

**Test Cases**
- Graph traversal
- Shortest path
- Relationship queries
- Cache invalidation
- Multi-level caching
- Performance benchmarks

### Phase 4: Security (Weeks 7-8)

**Services to Test**
- AuthService (95% coverage)
- ValidationService (95% coverage)

**Test Files to Create**
```
backend/tests/unit/services/auth_service_test.go
backend/tests/unit/middleware/auth_middleware_test.go
backend/tests/integration/auth_integration_test.go
backend/tests/e2e/security_workflow_test.go
```

**Test Cases**
- Authentication
- Authorization (ABAC)
- Token validation
- Permission checks
- Input validation
- Security headers

### Phase 5: Advanced AI (Weeks 9-10)

**Services to Test**
- AgentService (90% coverage)
- WorkflowService (85% coverage)

**Test Files to Create**
```
backend/tests/unit/services/agent_service_test.go
backend/tests/unit/services/workflow_service_test.go
backend/tests/integration/workflow_integration_test.go
backend/tests/e2e/agent_workflow_test.go
```

**Test Cases**
- Agent creation
- Agent execution
- Workflow orchestration
- Task distribution
- Result aggregation
- Error handling

### Phase 6: Performance (Weeks 11-12)

**Services to Test**
- All services (performance benchmarks)

**Test Files to Create**
```
backend/tests/performance/
├── search_performance_test.go
├── cache_performance_test.go
├── graph_performance_test.go
├── api_performance_test.go
└── end_to_end_performance_test.go
```

**Test Cases**
- Latency benchmarks
- Throughput benchmarks
- Memory usage
- CPU usage
- Scalability tests
- Load tests


## CLI Testing (Python)

### Unit Tests (70% of coverage)

```
cli/tests/unit/
├── commands/
│   ├── project_test.py (90% coverage)
│   ├── item_test.py (90% coverage)
│   ├── link_test.py (90% coverage)
│   ├── search_test.py (90% coverage)
│   └── sync_test.py (85% coverage)
├── storage/
│   ├── local_storage_test.py (95% coverage)
│   ├── sync_engine_test.py (90% coverage)
│   └── file_watcher_test.py (85% coverage)
└── utils/
    ├── validation_test.py (95% coverage)
    └── formatting_test.py (90% coverage)
```

### Integration Tests (20% of coverage)

```
cli/tests/integration/
├── api_integration_test.py
├── storage_integration_test.py
├── sync_integration_test.py
└── tui_integration_test.py
```

### E2E Tests (10% of coverage)

```
cli/tests/e2e/
├── project_workflow_test.py
├── item_workflow_test.py
├── search_workflow_test.py
└── sync_workflow_test.py
```

## Quality Assurance

### Code Quality Tools

**Go**
- golangci-lint (0 errors)
- go fmt (formatting)
- go vet (static analysis)

**TypeScript**
- eslint (0 errors)
- prettier (formatting)
- tsc (type checking)

**Python**
- pylint (0 errors)
- black (formatting)
- mypy (type checking)

### Test Execution

**Go Tests**
```bash
cd backend
go test ./... -v -cover -coverprofile=coverage.out
go tool cover -html=coverage.out
```

**Frontend Tests**
```bash
cd frontend
npm test -- --coverage
```

**CLI Tests**
```bash
cd cli
pytest tests/ -v --cov=tracertm --cov-report=html
```

### Coverage Reports

- Generate coverage reports for each test run
- Track coverage trends over time
- Identify gaps and low-coverage areas
- Set minimum coverage thresholds

## Test Execution Schedule

**Phase 1 (Weeks 1-2)**
- Unit tests: 90% coverage
- Integration tests: 80% coverage
- E2E tests: 50% coverage

**Phase 2 (Weeks 3-4)**
- Unit tests: 90% coverage
- Integration tests: 85% coverage
- E2E tests: 70% coverage

**Phase 3 (Weeks 5-6)**
- Unit tests: 85% coverage
- Integration tests: 85% coverage
- E2E tests: 80% coverage

**Phase 4 (Weeks 7-8)**
- Unit tests: 95% coverage
- Integration tests: 90% coverage
- E2E tests: 85% coverage

**Phase 5 (Weeks 9-10)**
- Unit tests: 90% coverage
- Integration tests: 90% coverage
- E2E tests: 85% coverage

**Phase 6 (Weeks 11-12)**
- Unit tests: 85% coverage
- Integration tests: 85% coverage
- E2E tests: 90% coverage

## Success Criteria

✅ All tests passing (100%)
✅ Coverage 85-95% across all services
✅ 0 lint errors
✅ 0 type errors
✅ 0 compile errors
✅ Performance benchmarks met
✅ Security tests passing
✅ Documentation complete

