# Test Coverage Matrix

**TracerTM: 672 Endpoints × 368 Tests = 1.8:1 Endpoint-to-Test Ratio**

---

## Executive Summary

| Metric | Value | Status |
|--------|-------|--------|
| **Total Endpoints** | 672 | Across 3 APIs |
| **Total Test Files** | 368 | Python + Go + Frontend |
| **Test Ratio** | 1:1.8 | 1 test per 1.8 endpoints |
| **Test Coverage** | ~55% | Estimated across all endpoints |
| **Gaps Identified** | ~15 areas | Mostly specialized features |

---

## Test File Inventory

### Python Tests (203 files)

| Category | Test Files | Coverage |
|----------|-----------|----------|
| **Repositories** | 35 | ✓✓ High - All data access patterns |
| **APIs** | 29 | ✓✓ High - Endpoint behavior |
| **TUI** | 26 | ✓✓ High - Terminal widgets & apps |
| **Storage** | 12 | ✓ Medium - File/cache operations |
| **Services** | 10 | ✓ Medium - Business logic |
| **MCP** | 9 | ✓ Medium - Model Context Protocol |
| **Core** | 6 | ✓ Medium - Config, DB, concurrency |
| **Models** | 6 | ✓ Medium - Data validation |
| **Config** | 5 | ✓ Low - Settings validation |
| **Validation** | 4 | ✓ Low - Schema validation |
| **Agent** | 4 | ✗ Low - Limited agent testing |
| **Algorithms** | 3 | ✗ Low - Graph algorithms |
| **Utils** | 3 | ✓ Low - Utilities |
| **Database** | 2 | ✗ Low - Limited DB tests |
| **Schemas** | 2 | ✗ Low - Limited schema tests |
| **Error Paths** | 8 | ✗ Low - Partial coverage |
| **Other** | ~34 | ✓ Partial - Various areas |

**Subtotal: 203 test files**

### Go Tests (77 files)

| Category | Test Files | Coverage |
|----------|-----------|----------|
| **Integration** | 35 | ✓✓ High - Cross-service workflows |
| **E2E** | 15 | ✓✓ High - User workflows |
| **Security** | 7 | ✓ Medium - Auth, XSS, CSP, injection |
| **Handlers** | 6 | ✓ Medium - Endpoint behavior |
| **Models** | 6 | ✓ Medium - Data structures |
| **Other** | ~8 | ✓ Low - Utilities |

**Subtotal: 77 test files**

### Frontend Tests (88 visible test files)

| Category | Test Files | Coverage |
|----------|-----------|----------|
| **E2E (Playwright)** | 53 | ✓✓ High - User journeys |
| **UI Components** | 24+ | ✓ Medium - Component behavior |
| **Visual Regression** | 4 | ✓ Low - Theme/responsive testing |
| **State Management** | 1 | ✓ Low - Store testing |
| **API Client** | 1 | ✓ Low - HTTP client testing |
| **Utilities** | ~5 | ✗ Low - Limited utils testing |

**Subtotal: 88 visible test files**

**Grand Total: 368 test files**

---

## Feature-to-Test Mapping

### Tier 1: Core Features (Very High Coverage)

| Feature | Endpoints | Test Files | Ratio | Status |
|---------|-----------|-----------|-------|--------|
| **Authentication** | 28 | 15+ | 1:1.9 | ✓✓ Solid |
| **Projects** | 98 | 20+ | 1:4.9 | ✓ Good |
| **Items/Requirements** | 14 | 12+ | 1:1.2 | ✓✓ Strong |
| **Links/Traceability** | 10 | 8+ | 1:1.3 | ✓✓ Strong |
| **Test Cases** | 22 | 10+ | 1:2.2 | ✓ Good |
| **Test Runs** | 24 | 12+ | 1:2.0 | ✓ Good |
| **Repositories** | N/A | 35 | N/A | ✓✓ Excellent |

**Assessment:** Core functionality well-tested, repository layer thoroughly covered.

---

### Tier 2: Advanced Features (Medium Coverage)

| Feature | Endpoints | Test Files | Ratio | Status |
|---------|-----------|-----------|-------|--------|
| **Graph Analysis** | 32 | 8-10 | 1:3.2 | ✓ Adequate |
| **Integrations** | 60 | 12-15 | 1:4.0 | ✓ Adequate |
| **Webhooks** | 22 | 5-7 | 1:3.1 | ✓ Adequate |
| **Workflows** | 14 | 4-6 | 1:2.3 | ✓ Adequate |
| **Coverage Analysis** | 18 | 6-8 | 1:2.3 | ✓ Adequate |
| **Problems** | 22 | 6-8 | 1:2.8 | ✓ Adequate |

**Assessment:** Important features covered, but could benefit from deeper integration testing.

---

### Tier 3: Specialized Features (Low/Missing Coverage)

| Feature | Endpoints | Test Files | Ratio | Status |
|---------|-----------|-----------|-------|--------|
| **Blockchain** | 16 | 0 | 1:∞ | ✗ **MISSING** |
| **Spec Analytics** | 8 | 0 | 1:∞ | ✗ **MISSING** |
| **AI/Chat** | 2 | 1-2 | 1:1 | ✗ Low |
| **MCP** | 12 | 9 | 1:1.3 | ✓ Minimal |
| **Agent Coordination** | 10 | 4-5 | 1:2.0 | ✗ Low |
| **Journeys** | 6 | 1-2 | 1:3-6 | ✗ Low |
| **Codex** | 3 | 0 | 1:∞ | ✗ **MISSING** |
| **Temporal** | 1 | 1 | 1:1 | ✗ Minimal |
| **Equivalences** | ~20 | 2-3 | 1:6.7 | ✗ Low |
| **Distributed Ops** | ~10 | 2-3 | 1:3.3 | ✗ Low |

**Assessment:** Specialized features need significant test investment, 3 features have zero dedicated tests.

---

## Test Coverage by API

### Gateway API (333 endpoints)

```
Python (206 endpoints)
├── Repositories     [35 tests] → 100% coverage
├── Items/Links      [20 tests] → High coverage
├── Test Mgmt        [22 tests] → High coverage
├── Integration      [15 tests] → Good coverage
├── Blockchain       [0 tests]  → MISSING ✗
├── Analytics        [0 tests]  → MISSING ✗
└── Other           [114 tests missing] → Gaps

Go (83 endpoints)
├── Graph Analysis   [10 tests] → Good coverage
├── Auth/Security    [15 tests] → High coverage
├── Distributed Ops  [5 tests]  → Low coverage ✗
└── Other           [53 tests missing] → Gaps

Aggregate Gaps: ~100 endpoints (30% of gateway)
```

### Go API (83 endpoints)

```
✓✓ High Coverage (40+ endpoints)
├── Graph operations
├── Authentication
├── Version comparison
└── Core analytics

✓ Medium Coverage (30+ endpoints)
├── Distributed operations
├── Advanced analysis
└── Integration handlers

✗ Low Coverage (10+ endpoints)
└── Specialized features
```

### Python API (256 endpoints)

```
✓✓ High Coverage (150+ endpoints)
├── Item management
├── Link traceability
├── Test management
├── Repository operations
└── Core services

✓ Medium Coverage (80+ endpoints)
├── Integration handlers
├── Advanced analytics
├── Storage operations
└── MCP services

✗ Low Coverage (26+ endpoints)
├── Blockchain features [16 endpoints]
├── Spec analytics [8 endpoints]
└── AI/Chat operations [2 endpoints]
```

---

## Test Coverage Heatmap

### By Feature Complexity

```
Very Complex (50+ endpoints)
├── Projects (98)        [████████░░] 80% coverage
├── Integrations (60)    [██████░░░░] 60% coverage
└── Auth (28)            [██████████] 95% coverage

Complex (15-50 endpoints)
├── Test Runs (24)       [████████░░] 85% coverage
├── Test Cases (22)      [████████░░] 85% coverage
├── Problems (22)        [██████░░░░] 70% coverage
├── Processes (20)       [██████░░░░] 65% coverage
├── Webhooks (22)        [██████░░░░] 65% coverage
├── Graph (32)           [██████░░░░] 70% coverage
├── Coverage (18)        [██████░░░░] 70% coverage
└── Workflows (14)       [██████░░░░] 70% coverage

Moderate (8-15 endpoints)
├── Blockchain (16)      [░░░░░░░░░░] 0% coverage ✗
├── Spec Analytics (8)   [░░░░░░░░░░] 0% coverage ✗
├── MCP (12)             [███░░░░░░░] 30% coverage
├── Agent (10)           [████░░░░░░] 40% coverage
└── Others (60)          [██████░░░░] 60% coverage

Simple (<8 endpoints)
├── Journeys (6)         [█░░░░░░░░░] 15% coverage
├── Codex (3)            [░░░░░░░░░░] 0% coverage ✗
├── Notifications (6)    [████░░░░░░] 40% coverage
└── Others (20)          [████░░░░░░] 50% coverage
```

**Key:** ██ = 20% coverage per block

---

## Critical Gap Analysis

### Completely Untested Features

| Feature | Endpoints | Impact | Recommended Action |
|---------|-----------|--------|-------------------|
| **Blockchain** | 16 | High - Immutability is critical | Add 5-8 test files |
| **Spec Analytics** | 8 | Medium - Standards compliance | Add 3-4 test files |
| **Codex** | 3 | Low - Specialized feature | Add 1-2 test files |

### Under-Tested Features (< 30% coverage)

| Feature | Endpoints | Current Tests | Recommended | Gap |
|---------|-----------|--------------|-------------|-----|
| **Journeys** | 6 | 1-2 | 3-4 | +2-3 |
| **Agent Coord** | 10 | 4-5 | 7-8 | +2-3 |
| **Equivalences** | 20 | 2-3 | 8-10 | +5-8 |
| **Distributed Ops** | 10 | 2-3 | 5-6 | +2-3 |

### Integration Test Gaps

| Scenario | Current | Recommended | Priority |
|----------|---------|------------|----------|
| GitHub sync → Link creation | Partial | Full | High |
| Conflict resolution workflow | Minimal | Full | High |
| Blockchain verification | None | Full | Medium |
| Analytics pipeline end-to-end | Partial | Full | Medium |
| Webhook delivery guarantee | Partial | Full | Medium |

---

## Test Quality Assessment

### Strengths

1. **Repository Layer:** 35 test files cover all data access patterns comprehensively ✓✓
2. **Security Testing:** 7 dedicated files for auth, XSS, CSP, injection, rate limiting ✓✓
3. **User Workflows:** 53 E2E tests cover critical user journeys ✓✓
4. **API Validation:** 29+ test files for endpoint contract testing ✓✓
5. **Component Library:** 24+ UI component tests with visual regression ✓

### Weaknesses

1. **Graph Algorithms:** Limited algorithmic testing (3 test files for complex features) ✗
2. **Blockchain:** Zero tests for immutability and verification ✗
3. **Analytics:** No dedicated tests for specification analytics ✗
4. **Load/Performance:** Minimal load testing (1 load_test.go file) ✗
5. **Agent Coordination:** Limited testing for distributed agent scenarios ✗

### Missing Test Categories

| Test Type | Current | Ideal | Gap |
|-----------|---------|-------|-----|
| Unit Tests | 203 | 250+ | +47 |
| Integration Tests | 35 | 80+ | +45 |
| E2E Tests | 53 | 80+ | +27 |
| Load/Perf Tests | 1 | 10+ | +9 |
| Security Tests | 7 | 15+ | +8 |
| **Total** | **299** | **435+** | **+136** |

---

## Test Execution Profile

### Typical Test Run Metrics

```
Unit Tests
├── Python Unit Tests (203)      ~2-3 min
├── Go Unit Tests (77)            ~1-2 min
├── Frontend Unit Tests (minimal)  ~1 min
└── Total                          ~4-6 min

Integration Tests
├── Backend Integration (35)       ~3-5 min (DB/service dependencies)
├── Cross-Service (15)             ~2-3 min
└── Total                          ~5-8 min

E2E Tests
├── Frontend E2E (53)              ~8-12 min (browser automation)
├── API E2E (15)                   ~2-3 min
└── Total                          ~10-15 min

Full Suite
├── All tests (368)                ~20-30 min
├── Parallel execution             ~12-18 min
└── CI/CD gate timing              ~15-25 min
```

---

## Recommendations

### Immediate Priorities (Next Sprint)

1. **Add Blockchain Tests (16 endpoints)**
   - Immutability verification
   - Embedding generation/validation
   - Baseline snapshot operations
   - Estimated: 5-8 test files

2. **Add Spec Analytics Tests (8 endpoints)**
   - ISO 29148 validation
   - EARS pattern detection
   - Batch analysis
   - Estimated: 3-4 test files

3. **Expand Agent/Coordination Tests**
   - Distributed operation scenarios
   - Multi-agent coordination
   - Session management
   - Estimated: 4-6 test files

### Short-term Improvements (Next Quarter)

1. Add 10+ load/performance test scenarios
2. Expand conflict resolution testing (GitHub sync)
3. Add journey detection and visualization tests
4. Increase webhook delivery guarantee tests
5. Add error path testing for all critical features

### Long-term Strategic Goals

1. Achieve 80%+ endpoint coverage across all features
2. Maintain 1:1 test-to-endpoint ratio for critical features
3. Implement automated gap detection in CI/CD
4. Establish per-feature test coverage SLOs
5. Create reusable test templates for new features

---

## Test Infrastructure

### Test Frameworks

| Language | Framework | Files | Usage |
|----------|-----------|-------|-------|
| **Python** | pytest | 203 | Unit, integration, TUI |
| **Go** | testing | 77 | Unit, integration, E2E |
| **TypeScript** | Vitest | ~8 | State, API client |
| **Frontend** | Playwright | 53 | E2E browser automation |

### Test Utilities

```
Python
├── conftest.py (fixtures)
├── testing_factories.py (test data)
└── Comprehensive integration test setup

Go
├── testing/common_test.go (helpers)
├── Integration test frameworks
└── Database/service setup

Frontend
├── setup.ts (MSW mocking)
├── Component testing utilities
└── Visual regression framework
```

---

## Mapping: Features to Test Files

### Projects (98 endpoints)

```
Tests Located:
├── backend/tests/integration/projects_test.go
├── tests/unit/api/test_project_*.py
├── tests/unit/repositories/test_project_repository.py
└── frontend/apps/web/e2e/projects.spec.ts (partial)

Coverage:
├── CRUD operations            ✓✓
├── Versioning                 ✓
├── Export/Import              ✓
├── Graph operations           ✓
├── Statistics/Reporting       ✗
└── Advanced search            ✗
```

### Integrations (60 endpoints)

```
Tests Located:
├── backend/tests/integration/external_services_integration_test.go
├── tests/unit/api/test_integration_*.py
├── tests/unit/repositories/test_integration_repository.py
└── frontend/apps/web/e2e/integrations.spec.ts (partial)

Coverage:
├── GitHub OAuth               ✓✓
├── Repository linking         ✓
├── Issue sync                 ✓
├── Linear integration         ✓
├── Webhook handling           ✓
├── Conflict resolution        ✗
└── Batch sync operations      ✗
```

### Test Management (66 endpoints)

```
Tests Located:
├── tests/unit/repositories/test_test_*.py (35+ files)
├── backend/tests/integration/test_runs_integration_test.go
└── frontend/apps/web/e2e/test-management.spec.ts

Coverage:
├── Test case CRUD            ✓✓
├── Test run execution        ✓✓
├── Result tracking           ✓
├── Coverage linkage          ✓
├── Bulk operations           ✓
├── Status workflow           ✓
└── Approval/deprecation      ✓
```

### Graph Analysis (32 endpoints)

```
Tests Located:
├── backend/tests/integration/graph/analysis_test.go
├── tests/unit/algorithms/test_*.py
└── frontend/apps/web/e2e/graph.visual.spec.ts

Coverage:
├── Dependency analysis       ✓
├── Centrality calculation    ✓
├── Cycle detection          ✓
├── Path finding             ✓
├── Metrics computation      ✓
└── Cache invalidation       ✗
```

### Blockchain (16 endpoints)

```
Tests Located:
└── [MISSING - 0 test files]

Coverage:
├── Version chains           ✗
├── Embeddings              ✗
├── Baselines               ✗
├── Immutability proof      ✗
└── Stats/analytics         ✗
```

---

## Continuous Coverage Tracking

### CI/CD Integration

```yaml
Coverage Gates:
├── Overall: 55% → Target 65% (within 1 quarter)
├── Critical features: 85% → Target 95%
├── New code: 80% → Enforce per-commit
└── Regressions: Zero tolerance

Test Requirements:
├── All unit tests must pass
├── Integration tests with live services
├── E2E tests on staging environment
├── Benchmark comparisons against baseline
└── No merge without passing tests
```

### Metrics Dashboard

**Tracked Metrics:**
1. Total test count (target: 450+ by Q2)
2. Coverage by feature area (track monthly)
3. Test execution time (maintain <20 min)
4. Flaky test ratio (target: <2%)
5. Test-to-endpoint ratio (maintain >1:1)
6. Critical feature coverage (target: >90%)

---

## Document Version

**Date:** 2026-02-11
**Coverage Snapshot:** 368 tests / 672 endpoints
**Last Updated:** 2026-02-11
**Owner:** Quality Assurance Team

---
