# Test Coverage Documentation Index

**Generated:** 2026-04-11  
**Total Lines of Documentation:** 3,014  
**Total Files Analyzed:** 17 untested source files  

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## 📚 Documentation Files

### 1. **README_TEST_COVERAGE.md** (9.1 KB)
Start here for complete overview and roadmap.

**Contains:**
- Overview of all 4 documentation files
- File organization by module (Inquiries, Leads, Reviews)
- Priority testing levels (Critical 🔴, High 🟡, Medium 🟢)
- 3-week testing roadmap with time estimates
- Key testing patterns for each file type
- Critical formulas to verify in tests
- Common test data and import statements
- Troubleshooting guide
- Quick start instructions

**Time to read:** 5-10 minutes

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### 2. **TEST_COVERAGE_ANALYSIS.md** (55 KB)
Complete reference with all 17 source files and full implementations.

**Contains:**
- Executive summary
- **PART 1: INQUIRIES MODULE** (4 files)
  - PrismaInquiryRepository (146 lines)
  - InquiriesController (120 lines)
  - CreateInquiryDto (20 lines)
  - ListInquiriesDto (20 lines)
  
- **PART 2: LEADS MODULE** (6 files)
  - PrismaLeadRepository (151 lines)
  - LeadScore ValueObject (16 lines)
  - LeadsController (126 lines)
  - CreateLeadDto (35 lines)
  - ListLeadsDto (30 lines)
  - UpdateLeadStatusDto (14 lines)
  
- **PART 3: REVIEWS MODULE** (5 files)
  - PrismaReviewRepository (162 lines)
  - Rating ValueObject (16 lines)
  - ReviewsController (122 lines)
  - CreateReviewDto (26 lines)
  - ListReviewsDto (42 lines)

- **PART 4: REFERENCE TEST PATTERNS** (3 test files)
  - CreateInquiryHandler test pattern
  - CreateLeadHandler test pattern
  - ReviewsController test pattern

- Summary table of all files
- Testing priorities
- Test coverage goals

**Time to read:** 30-45 minutes for complete review

**How to use:**
1. Find the file you want to test
2. Read the full implementation
3. Review the "Key Methods to Test" section
4. Check "Test Scenarios" section
5. Cross-reference with templates in TEST_TEMPLATES.md

---

### 3. **TEST_COVERAGE_QUICK_REFERENCE.md** (9.1 KB)
Checklists and quick lookup reference.

**Contains:**
- 17 files overview with line counts
- Quick test scenarios by type:
  - Repositories (3 files) - checklist + specific notes
  - Value Objects (2 files) - validation ranges
  - Controllers (2 files) - endpoint checklist
  - DTOs (10 files) - validation rules
  
- Test priority matrix:
  - Critical: 4 items (business logic)
  - High: 5 items (data integrity)
  - Medium: 3 items (validation/guards)

- Test execution order recommendation
- Mock setup templates (4 examples)
- Key formulas to verify
- File locations reference

**Time to read:** 3-5 minutes for lookup

**How to use:**
1. Find the file type you're testing
2. Check the quick checklist
3. Jump to detailed section in Analysis for more info
4. Copy the mock template from this file

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### 4. **TEST_TEMPLATES.md** (16 KB)
Ready-to-use code templates for all file types.

**Contains:**
- Repository Test Template
  - Setup with mocked Prisma
  - Test findById()
  - Test save()
  - Test findByListing() with pagination

- Value Object Test Template
  - Test create() with valid values
  - Test boundary values
  - Test invalid values
  - Test error messages
  - Test getters

- DTO Test Template
  - Test required fields validation
  - Test optional fields
  - Test field constraints (email, range)
  - Test type transformation

- Controller Test Template
  - Setup with mocked buses
  - Test command dispatch
  - Test parameter mapping
  - Test null handling
  - Test default values

- Helper Tests
  - Pagination calculation tests
  - Aggregation formula tests
  - DTO pagination tests

**Time to read:** 10-15 minutes while writing tests

**How to use:**
1. Copy the appropriate template for your file type
2. Paste into your test file
3. Replace generic names with your specific file names
4. Update imports and test data
5. Run and verify tests pass

---

## 🎯 Quick Navigation by Task

### "I want to understand what needs testing"
→ Start with **README_TEST_COVERAGE.md** (5 min)  
→ Then **TEST_COVERAGE_QUICK_REFERENCE.md** (3 min)

### "I want to write tests for a specific file"
→ Find the file in **TEST_COVERAGE_QUICK_REFERENCE.md**  
→ Read detailed implementation in **TEST_COVERAGE_ANALYSIS.md**  
→ Copy template from **TEST_TEMPLATES.md**  
→ Adapt template to your file

### "I want to understand a specific component"
→ Look up file in **TEST_COVERAGE_ANALYSIS.md**  
→ Find section with "Key Methods to Test"  
→ Find section with "Test Scenarios"  
→ Check **TEST_TEMPLATES.md** for pattern

### "I want formulas and calculations"
→ **TEST_COVERAGE_QUICK_REFERENCE.md** - "Key Formulas to Verify"  
→ **TEST_TEMPLATES.md** - Aggregation Test Helper  
→ **TEST_COVERAGE_ANALYSIS.md** - Specific repo section

### "I need mock setup examples"
→ **TEST_COVERAGE_QUICK_REFERENCE.md** - Mock Setup Template  
→ **TEST_TEMPLATES.md** - First section for each type

---

## 📋 17 Files at a Glance

### Inquiries (4 files)
| File | Type | Key Test |
|------|------|----------|
| prisma-inquiry.repository.ts | Repository | Pagination, relationships |
| inquiries.controller.ts | Controller | 4 endpoints, guards |
| create-inquiry.dto.ts | DTO | 3 validations |
| list-inquiries.dto.ts | DTO | Pagination validation |

### Leads (6 files)
| File | Type | Key Test |
|------|------|----------|
| prisma-lead.repository.ts | Repository | Stats aggregation |
| lead-score.vo.ts | ValueObject | Range 0-100 |
| leads.controller.ts | Controller | 5 endpoints, role guard |
| create-lead.dto.ts | DTO | 6 validations |
| list-leads.dto.ts | DTO | Status enum |
| update-lead-status.dto.ts | DTO | Status validation |

### Reviews (5 files)
| File | Type | Key Test |
|------|------|----------|
| prisma-review.repository.ts | Repository | Distribution stats |
| rating.vo.ts | ValueObject | Integer 1-5 only |
| reviews.controller.ts | Controller | 5 endpoints, mixed auth |
| create-review.dto.ts | DTO | 4 validations |
| list-reviews.dto.ts | DTO | 2 DTOs, pagination |

---

## ⏱️ Time Estimates

### By File Type
- **Value Objects** (2 files): 30-45 minutes
- **DTOs** (10 files): 2-3 hours (using templates)
- **Controllers** (2 files): 1.5-2 hours
- **Repositories** (3 files): 2.5-3.5 hours

### Total: 9-14 hours

### Recommended Order
1. Value Objects (fastest, builds confidence)
2. DTOs (quick, many file repetition)
3. Controllers (medium complexity)
4. Repositories (most complex, worth doing last)

---

## 🔍 What Each File Tests

### Value Objects
- **LeadScore.vo**
  - ✓ Valid range 0-100
  - ✓ Rejection of invalid values
  - ✓ Error message in Vietnamese
  
- **Rating.vo**
  - ✓ Valid integers 1-5 only
  - ✓ Rejection of 0, 6, floats
  - ✓ Error message in Vietnamese

### DTOs
- **Pagination DTOs** (4 files)
  - ✓ Page/limit validation
  - ✓ Type transformation
  - ✓ Default values
  
- **Status DTOs** (2 files)
  - ✓ Enum validation
  - ✓ Only valid statuses accepted
  
- **Create DTOs** (4 files)
  - ✓ Required field validation
  - ✓ Optional field handling
  - ✓ Field constraints (email, length, range)

### Controllers
- **InquiriesController**
  - ✓ 4 endpoints with correct dispatch
  - ✓ JWT authentication
  - ✓ Role-based guards (AGENT)
  
- **LeadsController**
  - ✓ 5 endpoints with correct dispatch
  - ✓ Class-level role guard (AGENT)
  - ✓ Optional field handling
  
- **ReviewsController**
  - ✓ 5 endpoints with correct dispatch
  - ✓ Mixed authentication (some endpoints public)
  - ✓ User ownership verification

### Repositories
- **PrismaInquiryRepository**
  - ✓ CRUD: findById, save, markAsRead
  - ✓ Paginated: findByListing, findByAgent
  - ✓ Aggregation: countUnreadByAgent
  - ✓ Data mapping: toDomain
  
- **PrismaLeadRepository**
  - ✓ CRUD: findById, save, update, delete
  - ✓ Pagination with optional status filter
  - ✓ Aggregation: getStatsByAgent (conversion rate, avg score)
  - ✓ Data mapping including LeadScore VO
  
- **PrismaReviewRepository**
  - ✓ CRUD: findById, findByUserAndTarget, save, delete
  - ✓ Pagination: findByTarget, findByUserId
  - ✓ Aggregation: getStats (distribution, average rating)
  - ✓ Data mapping including Rating VO

---

## 📖 Reference Examples

### Working Test Patterns
Three complete test files are included as references:

1. **create-inquiry.handler.spec.ts** (99 lines)
   - Mock repository, EventBus, Prisma
   - Happy path test
   - Error handling test
   - Event publishing verification

2. **create-lead.handler.spec.ts** (121 lines)
   - Similar pattern to create-inquiry
   - Tests optional field handling
   - Tests ValueObject validation

3. **reviews.controller.spec.ts** (135 lines)
   - Controller endpoint testing
   - Bus dispatch verification
   - Query parameter handling
   - Default value application

---

## ✅ Testing Checklist Template

```
Module: ___________________
File: _____________________

Imports:
- [ ] Test framework imported
- [ ] Classes imported
- [ ] Mocks ready

Setup:
- [ ] beforeEach creates fresh mocks
- [ ] Dependencies injected
- [ ] Test data prepared

Happy Path:
- [ ] Basic functionality test
- [ ] Return values verified
- [ ] Methods called correctly

Edge Cases:
- [ ] Null/undefined handling
- [ ] Empty results handling
- [ ] Boundary values

Error Cases:
- [ ] Invalid input rejection
- [ ] Error messages verified
- [ ] Guard validation

Cleanup:
- [ ] Mocks cleaned after each test
- [ ] No test interdependencies
```

---

## 💡 Pro Tips

1. **Start Small**: Begin with Value Objects (simplest)
2. **Copy-Paste**: Use templates, don't write from scratch
3. **Test Early**: Run tests as you write them
4. **Be Thorough**: Include both happy and error paths
5. **Use Existing**: Reference existing tests in the codebase
6. **Verify Formulas**: Test arithmetic calculations carefully
7. **Mock Everything**: Don't hit real database in tests
8. **Test Guards**: Don't forget authentication/authorization

---

## 🆘 Need Help?

1. **Configuration question?** → See README_TEST_COVERAGE.md
2. **Template needed?** → See TEST_TEMPLATES.md
3. **Implementation details?** → See TEST_COVERAGE_ANALYSIS.md
4. **Quick lookup?** → See TEST_COVERAGE_QUICK_REFERENCE.md
5. **Existing example?** → Check modules' `__tests__` directories

---

**Document Version:** 1.0  
**Last Updated:** 2026-04-11  
**Total Documentation:** 3,014 lines across 4 files  
**Coverage:** 17 untested source files (Inquiries, Leads, Reviews modules)
