# GoodGo Platform AI - Test Coverage Audit Report
**Date:** April 10, 2026
**Repository:** /Users/velikho/Desktop/WORKING/goodgo-platform-ai/apps/api/src/modules/

---

## EXECUTIVE SUMMARY

This audit analyzes test coverage across three critical modules in the GoodGo Platform AI backend:

| Module | Source Files | Test Files | Coverage |
|--------|-------------|-----------|----------|
| **Listings** | 42 | 13 | 31% |
| **Auth** | 56 | 21 | 38% |
| **Search** | 22 | 10 | 45% |
| **TOTAL** | **120** | **44** | **37%** |

**Key Finding:** While test files exist for major handlers and domain entities, many critical infrastructure services, value objects, repositories, and presentation layer components lack test coverage.

---

## 1. LISTINGS MODULE AUDIT

**Location:** `apps/api/src/modules/listings/`

### Module Statistics
- **Total Source Files:** 42 (excluding index.ts files)
- **Total Test Files:** 13
- **Overall Coverage:** 31% (13 of 42 key files have tests)

### Existing Test Files (13 total)

#### Application Layer Tests (8 files)
- ✓ `create-listing.handler.spec.ts` → Tests CreateListingHandler
- ✓ `get-listing.handler.spec.ts` → Tests GetListingHandler
- ✓ `get-pending-moderation.handler.spec.ts` → Tests GetPendingModerationHandler
- ✓ `moderate-listing.handler.spec.ts` → Tests ModerateListingHandler
- ✓ `search-listings.handler.spec.ts` → Tests SearchListingsHandler
- ✓ `update-listing-status.handler.spec.ts` → Tests UpdateListingStatusHandler
- ✓ `upload-media.handler.spec.ts` → Tests UploadMediaHandler
- ✓ `price-validator.spec.ts` → Tests PrismaPriceValidator (Infrastructure)

#### Domain Layer Tests (5 files)
- ✓ `duplicate-detector.spec.ts` → Tests trigram similarity logic
- ✓ `listing-events.spec.ts` → Tests domain events
- ✓ `listing.entity.spec.ts` → Tests ListingEntity
- ✓ `property.entity.spec.ts` → Tests PropertyEntity & PropertyMediaEntity
- ✓ `value-objects.spec.ts` → Tests Address, GeoPoint, Price VOs

---

### UNTESTED SOURCE FILES - HIGH PRIORITY

#### 🔴 Domain Entities & Value Objects (NOT TESTED - 9 files)
These are critical for business logic:

**Domain Entities:**
1. `domain/entities/listing.entity.ts` ⚠️ **HAS TESTS** - listed.entity.spec.ts
2. `domain/entities/property.entity.ts` ⚠️ **HAS TESTS** - property.entity.spec.ts
3. `domain/entities/property-media.entity.ts` ⚠️ **HAS TESTS** - property.entity.spec.ts

**Domain Value Objects:**
4. `domain/value-objects/address.vo.ts` ⚠️ **HAS TESTS** - value-objects.spec.ts
5. `domain/value-objects/geo-point.vo.ts` ⚠️ **HAS TESTS** - value-objects.spec.ts
6. `domain/value-objects/price.vo.ts` ⚠️ **HAS TESTS** - value-objects.spec.ts

**Domain Events (MISSING TESTS - 4 files):**
7. `domain/events/listing-created.event.ts` - ⚠️ Has test coverage in listing-events.spec.ts
8. `domain/events/listing-approved.event.ts` - ✗ **NO TEST FILE**
9. `domain/events/listing-sold.event.ts` - ✗ **NO TEST FILE**
10. `domain/events/listing-status-changed.event.ts` - ✗ **NO TEST FILE**

**Domain Services (3 files):**
11. `domain/services/duplicate-detector.ts` ⚠️ **HAS TESTS** - duplicate-detector.spec.ts
12. `domain/services/moderation.service.ts` - ✗ **NO TEST FILE** (business logic interface)
13. `domain/services/price-validator.ts` ⚠️ **HAS TESTS** - price-validator.spec.ts

**Domain Repositories (INTERFACE - 3 files):**
14. `domain/repositories/listing.repository.ts` - ✗ **NO TEST** (abstract/interface only)
15. `domain/repositories/property.repository.ts` - ✗ **NO TEST** (abstract/interface only)
16. `domain/repositories/listing-read.dto.ts` - ✗ **NO TEST** (data transfer object)

---

#### 🔴 Application Handlers & Commands (PARTIALLY TESTED - 14 files)

**Commands (8 files):**
1. `application/commands/create-listing/create-listing.command.ts` - ✓ Tested via handler
2. `application/commands/create-listing/create-listing.handler.ts` - ✓ TESTED
3. `application/commands/moderate-listing/moderate-listing.command.ts` - ✓ Tested via handler
4. `application/commands/moderate-listing/moderate-listing.handler.ts` - ✓ TESTED
5. `application/commands/update-listing-status/update-listing-status.command.ts` - ✓ Tested via handler
6. `application/commands/update-listing-status/update-listing-status.handler.ts` - ✓ TESTED
7. `application/commands/upload-media/upload-media.command.ts` - ✓ Tested via handler
8. `application/commands/upload-media/upload-media.handler.ts` - ✓ TESTED

**Queries (6 files):**
9. `application/queries/get-listing/get-listing.query.ts` - ✓ Tested via handler
10. `application/queries/get-listing/get-listing.handler.ts` - ✓ TESTED
11. `application/queries/get-pending-moderation/get-pending-moderation.query.ts` - ✓ Tested via handler
12. `application/queries/get-pending-moderation/get-pending-moderation.handler.ts` - ✓ TESTED
13. `application/queries/search-listings/search-listings.query.ts` - ✓ Tested via handler
14. `application/queries/search-listings/search-listings.handler.ts` - ✓ TESTED

---

#### 🔴 Infrastructure Layer - Services & Repositories (MISSING TESTS - 6 files)

**Critical Infrastructure Services:**
1. `infrastructure/services/media-storage.service.ts` - ✗ **NO TEST FILE**
   - Handles file upload/storage operations
   - Should test: upload success, error handling, path resolution

2. `infrastructure/services/prisma-duplicate-detector.ts` - ✗ **NO TEST FILE**
   - Implements domain duplicate detection interface
   - Should test: database queries, similarity logic integration

3. `infrastructure/services/prisma-price-validator.ts` - ✗ **NO TEST FILE**
   - Implements domain price validation interface
   - Should test: price range queries, validation logic

**Infrastructure Repositories:**
4. `infrastructure/repositories/prisma-listing.repository.ts` - ✗ **NO TEST FILE**
   - Primary data access for listings
   - Should test: CRUD operations, complex queries

5. `infrastructure/repositories/prisma-property.repository.ts` - ✗ **NO TEST FILE**
   - Data access for properties
   - Should test: property creation, media operations

6. `infrastructure/repositories/listing-read.queries.ts` - ✗ **NO TEST FILE**
   - Complex read queries for listing features
   - Should test: query building, filtering logic

---

#### 🔴 Presentation Layer (MISSING TESTS - 6 files)

**Controllers:**
1. `presentation/controllers/listings.controller.ts` - ✗ **NO TEST FILE**
   - Main API endpoint handler
   - Should test: request routing, response formatting

**DTOs/Data Transfer Objects:**
2. `presentation/dto/create-listing.dto.ts` - ✗ **NO TEST FILE**
3. `presentation/dto/moderate-listing.dto.ts` - ✗ **NO TEST FILE**
4. `presentation/dto/search-listings.dto.ts` - ✗ **NO TEST FILE**
5. `presentation/dto/update-listing-status.dto.ts` - ✗ **NO TEST FILE**

**Module Definition:**
6. `listings.module.ts` - ✗ **NO TEST FILE** (NestJS module configuration)

---

### PRIORITY RANKING FOR NEW TESTS

**TIER 1 - CRITICAL (Business Logic, Must Test First):**
1. `infrastructure/services/prisma-duplicate-detector.ts` - Core duplicate detection
2. `infrastructure/services/prisma-price-validator.ts` - Price validation logic
3. `infrastructure/repositories/prisma-listing.repository.ts` - Primary data access layer
4. `domain/services/moderation.service.ts` - Moderation business rules

**TIER 2 - HIGH (Infrastructure, Data Access):**
5. `infrastructure/repositories/prisma-property.repository.ts` - Property data access
6. `infrastructure/repositories/listing-read.queries.ts` - Read query optimization
7. `infrastructure/services/media-storage.service.ts` - File handling

**TIER 3 - MEDIUM (Presentation, DTOs):**
8. `presentation/controllers/listings.controller.ts` - HTTP endpoints
9. `presentation/dto/create-listing.dto.ts` - Input validation
10. `presentation/dto/moderate-listing.dto.ts` - Input validation
11. `presentation/dto/search-listings.dto.ts` - Input validation
12. `presentation/dto/update-listing-status.dto.ts` - Input validation

**TIER 4 - LOW (Configuration, Events):**
13. `listings.module.ts` - Module configuration
14. `domain/events/listing-approved.event.ts` - Event models
15. `domain/events/listing-sold.event.ts` - Event models
16. `domain/events/listing-status-changed.event.ts` - Event models

---

---

## 2. AUTH MODULE AUDIT

**Location:** `apps/api/src/modules/auth/`

### Module Statistics
- **Total Source Files:** 56 (excluding index.ts files)
- **Total Test Files:** 21
- **Overall Coverage:** 38% (21 of 56 files have comprehensive tests)

### Existing Test Files (21 total)

#### Application Layer Tests (12 files)
- ✓ `cancel-user-deletion.handler.spec.ts` → CancelUserDeletionHandler
- ✓ `export-user-data.handler.spec.ts` → ExportUserDataHandler
- ✓ `force-delete-user.handler.spec.ts` → ForceDeleteUserHandler
- ✓ `get-agent-by-user-id.handler.spec.ts` → GetAgentByUserIdHandler
- ✓ `get-profile.handler.spec.ts` → GetProfileHandler
- ✓ `login-user.handler.spec.ts` → LoginUserHandler
- ✓ `process-scheduled-deletions.handler.spec.ts` → ProcessScheduledDeletionsHandler
- ✓ `refresh-token.handler.spec.ts` → RefreshTokenHandler
- ✓ `register-user.handler.spec.ts` → RegisterUserHandler
- ✓ `request-user-deletion.handler.spec.ts` → RequestUserDeletionHandler
- ✓ `verify-kyc.handler.spec.ts` → VerifyKycHandler

#### Infrastructure Layer Tests (4 files)
- ✓ `google-oauth.strategy.spec.ts` → GoogleOAuthStrategy
- ✓ `oauth.service.spec.ts` → OAuthService
- ✓ `token.service.spec.ts` → TokenService
- ✓ `zalo-oauth.strategy.spec.ts` → ZaloOAuthStrategy

#### Domain Layer Tests (5 files)
- ✓ `auth-events.spec.ts` → Domain events (UserRegistered, etc.)
- ✓ `email.vo.spec.ts` → Email value object
- ✓ `hashed-password.vo.spec.ts` → HashedPassword value object
- ✓ `phone.vo.spec.ts` → Phone value object
- ✓ `user.entity.spec.ts` → UserEntity

#### Root Level Tests (1 file)
- ✓ `auth.integration.spec.ts` → Integration tests for auth controller

---

### UNTESTED SOURCE FILES - HIGH PRIORITY

#### 🔴 Domain Entities & Value Objects

**Domain Entities (1 file):**
1. `domain/entities/user.entity.ts` ⚠️ **HAS TESTS** - user.entity.spec.ts

**Domain Value Objects (3 files):**
2. `domain/value-objects/email.vo.ts` ⚠️ **HAS TESTS** - email.vo.spec.ts
3. `domain/value-objects/hashed-password.vo.ts` ⚠️ **HAS TESTS** - hashed-password.vo.spec.ts
4. `domain/value-objects/phone.vo.ts` ⚠️ **HAS TESTS** - phone.vo.spec.ts

**Domain Events (4 files - All Missing Individual Tests):**
5. `domain/events/user-registered.event.ts` ⚠️ **HAS TESTS** - auth-events.spec.ts
6. `domain/events/user-deactivated.event.ts` ⚠️ **HAS TESTS** - auth-events.spec.ts
7. `domain/events/user-kyc-updated.event.ts` ⚠️ **HAS TESTS** - auth-events.spec.ts
8. `domain/events/agent-verified.event.ts` ⚠️ **HAS TESTS** - auth-events.spec.ts

**Domain Repositories (2 files - Abstract Interfaces):**
9. `domain/repositories/user.repository.ts` - ✗ **NO TEST** (interface/contract only)
10. `domain/repositories/refresh-token.repository.ts` - ✗ **NO TEST** (interface/contract only)

---

#### 🔴 Application Handlers & Commands (PARTIALLY TESTED - 20 files)

**Commands (18 files):**
1-18. All command files HAVE corresponding handler tests:
- `application/commands/cancel-user-deletion/*` ✓ TESTED
- `application/commands/export-user-data/*` ✓ TESTED
- `application/commands/force-delete-user/*` ✓ TESTED
- `application/commands/login-user/*` ✓ TESTED
- `application/commands/process-scheduled-deletions/*` ✓ TESTED
- `application/commands/refresh-token/*` ✓ TESTED
- `application/commands/register-user/*` ✓ TESTED
- `application/commands/request-user-deletion/*` ✓ TESTED
- `application/commands/verify-kyc/*` ✓ TESTED

**Queries (4 files):**
19. `application/queries/get-profile/get-profile.query.ts` ✓ Tested via handler
20. `application/queries/get-profile/get-profile.handler.ts` ✓ TESTED
21. `application/queries/get-agent-by-user-id/get-agent-by-user-id.query.ts` ✓ Tested via handler
22. `application/queries/get-agent-by-user-id/get-agent-by-user-id.handler.ts` ✓ TESTED

---

#### 🔴 Infrastructure Layer - Services & Repositories (MISSING TESTS - 6 files)

**Infrastructure Services (2 files):**
1. `infrastructure/services/oauth.service.ts` ⚠️ **HAS TESTS** - oauth.service.spec.ts
2. `infrastructure/services/token.service.ts` ⚠️ **HAS TESTS** - token.service.spec.ts

**Infrastructure Strategies (4 files - Missing Tests):**
3. `infrastructure/strategies/google-oauth.strategy.ts` ⚠️ **HAS TESTS** - google-oauth.strategy.spec.ts
4. `infrastructure/strategies/zalo-oauth.strategy.ts` ⚠️ **HAS TESTS** - zalo-oauth.strategy.spec.ts
5. `infrastructure/strategies/jwt.strategy.ts` - ✗ **NO TEST FILE**
   - JWT authentication strategy
   - Should test: token validation, user extraction

6. `infrastructure/strategies/local.strategy.ts` - ✗ **NO TEST FILE**
   - Local (username/password) authentication
   - Should test: credential validation, user lookup

**Infrastructure Repositories (2 files):**
7. `infrastructure/repositories/prisma-user.repository.ts` - ✗ **NO TEST FILE**
   - Primary user data access
   - Should test: CRUD operations, user lookup queries

8. `infrastructure/repositories/prisma-refresh-token.repository.ts` - ✗ **NO TEST FILE**
   - Refresh token persistence layer
   - Should test: token creation, validation, rotation

---

#### 🔴 Presentation Layer (MISSING TESTS - 14 files)

**Controllers (3 files):**
1. `presentation/controllers/auth.controller.ts` - ✗ **NO TEST FILE** (covered by integration test)
2. `presentation/controllers/oauth.controller.ts` - ✗ **NO TEST FILE**
3. `presentation/controllers/user-data.controller.ts` - ✗ **NO TEST FILE**

**Guards (4 files - Critical for Security):**
4. `presentation/guards/jwt-auth.guard.ts` - ✗ **NO TEST FILE**
   - JWT token verification guard
   - **CRITICAL:** Should test: valid tokens, expired tokens, invalid signatures

5. `presentation/guards/local-auth.guard.ts` - ✗ **NO TEST FILE**
   - Local authentication guard
   - Should test: authentication flow, user verification

6. `presentation/guards/google-oauth.guard.ts` - ✗ **NO TEST FILE**
   - OAuth guard for Google
   - Should test: OAuth callback, user profile retrieval

7. `presentation/guards/roles.guard.ts` - ✗ **NO TEST FILE**
   - Role-based access control
   - **CRITICAL:** Should test: admin access, user access, denied access

**Decorators (2 files):**
8. `presentation/decorators/current-user.decorator.ts` - ✗ **NO TEST FILE**
   - Extracts current user from request
   - Should test: decorator application, user extraction

9. `presentation/decorators/roles.decorator.ts` - ✗ **NO TEST FILE**
   - Marks routes with required roles
   - Should test: decorator metadata setting

**DTOs (6 files):**
10. `presentation/dto/login.dto.ts` - ✗ **NO TEST FILE**
11. `presentation/dto/register.dto.ts` - ✗ **NO TEST FILE**
12. `presentation/dto/refresh-token.dto.ts` - ✗ **NO TEST FILE**
13. `presentation/dto/verify-kyc.dto.ts` - ✗ **NO TEST FILE**
14. `presentation/dto/force-delete-user.dto.ts` - ✗ **NO TEST FILE**
15. `presentation/dto/request-deletion.dto.ts` - ✗ **NO TEST FILE**

**Module Definition:**
16. `auth.module.ts` - ✗ **NO TEST FILE** (NestJS module configuration)

---

### PRIORITY RANKING FOR NEW TESTS

**TIER 1 - CRITICAL (Security-Critical, Must Test First):**
1. `presentation/guards/jwt-auth.guard.ts` - Token validation security
2. `presentation/guards/roles.guard.ts` - Authorization enforcement
3. `infrastructure/repositories/prisma-user.repository.ts` - User data access
4. `infrastructure/repositories/prisma-refresh-token.repository.ts` - Token management

**TIER 2 - HIGH (Authentication Strategies):**
5. `infrastructure/strategies/jwt.strategy.ts` - JWT strategy
6. `infrastructure/strategies/local.strategy.ts` - Local auth strategy
7. `presentation/guards/local-auth.guard.ts` - Local auth guard
8. `presentation/guards/google-oauth.guard.ts` - OAuth guard

**TIER 3 - MEDIUM (Presentation & DTOs):**
9. `presentation/controllers/auth.controller.ts` - Main auth controller
10. `presentation/controllers/oauth.controller.ts` - OAuth endpoints
11. `presentation/controllers/user-data.controller.ts` - User data endpoints
12. `presentation/decorators/current-user.decorator.ts` - Current user extraction
13. `presentation/decorators/roles.decorator.ts` - Role marking
14. `presentation/dto/login.dto.ts` - Login input validation
15. `presentation/dto/register.dto.ts` - Registration input validation
16. `presentation/dto/refresh-token.dto.ts` - Token refresh validation

**TIER 4 - LOW (Configuration):**
17. `auth.module.ts` - Module configuration

---

---

## 3. SEARCH MODULE AUDIT

**Location:** `apps/api/src/modules/search/`

### Module Statistics
- **Total Source Files:** 22 (excluding index.ts files)
- **Total Test Files:** 10
- **Overall Coverage:** 45% (10 of 22 files have tests - HIGHEST of three modules!)

### Existing Test Files (10 total)

#### Application Layer Tests (4 files)
- ✓ `geo-search.handler.spec.ts` → GeoSearchHandler
- ✓ `reindex-all.handler.spec.ts` → ReindexAllHandler
- ✓ `search-properties.handler.spec.ts` → SearchPropertiesHandler
- ✓ `sync-listing.handler.spec.ts` → SyncListingHandler

#### Infrastructure Layer Tests (4 files)
- ✓ `listing-approved.handler.spec.ts` → ListingApprovedEventHandler
- ✓ `listing-indexer.service.spec.ts` → ListingIndexerService
- ✓ `resilient-search.repository.spec.ts` → ResilientSearchRepository
- ✓ `typesense-search.repository.spec.ts` → TypesenseSearchRepository

#### Domain Layer Tests (1 file)
- ✓ `search-domain.spec.ts` → SearchFilter & GeoFilter value objects

#### Presentation Layer Tests (1 file)
- ✓ `search.controller.spec.ts` → SearchController

---

### UNTESTED SOURCE FILES - HIGH PRIORITY

#### 🔴 Domain Layer (3 files)

**Repositories (1 file - Abstract Interface):**
1. `domain/repositories/search.repository.ts` - ✗ **NO TEST** (interface/contract only)
   - Defines search repository contract
   - Not critical to test (abstract interface)

**Value Objects (2 files - Missing Tests):**
2. `domain/value-objects/search-filter.vo.ts` ⚠️ **HAS TESTS** - search-domain.spec.ts
3. `domain/value-objects/geo-filter.vo.ts` ⚠️ **HAS TESTS** - search-domain.spec.ts

---

#### 🔴 Application Handlers & Commands (4 files)

**Commands (4 files - All Tested):**
1. `application/commands/reindex-all/reindex-all.command.ts` ✓ Tested via handler
2. `application/commands/reindex-all/reindex-all.handler.ts` ✓ TESTED
3. `application/commands/sync-listing/sync-listing.command.ts` ✓ Tested via handler
4. `application/commands/sync-listing/sync-listing.handler.ts` ✓ TESTED

**Queries (4 files - All Tested):**
5. `application/queries/geo-search/geo-search.query.ts` ✓ Tested via handler
6. `application/queries/geo-search/geo-search.handler.ts` ✓ TESTED
7. `application/queries/search-properties/search-properties.query.ts` ✓ Tested via handler
8. `application/queries/search-properties/search-properties.handler.ts` ✓ TESTED

---

#### 🔴 Infrastructure Layer - Services & Repositories (5 files)

**Infrastructure Services (3 files - Partially Tested):**
1. `infrastructure/services/listing-indexer.service.ts` ⚠️ **HAS TESTS** - listing-indexer.service.spec.ts
2. `infrastructure/services/resilient-search.repository.ts` ⚠️ **HAS TESTS** - resilient-search.repository.spec.ts
3. `infrastructure/services/typesense-search.repository.ts` ⚠️ **HAS TESTS** - typesense-search.repository.spec.ts

**Missing Infrastructure Services:**
4. `infrastructure/services/typesense-client.service.ts` - ✗ **NO TEST FILE**
   - Direct Typesense client wrapper
   - Should test: client initialization, connection, error handling

5. `infrastructure/services/postgres-search.repository.ts` - ✗ **NO TEST FILE**
   - PostgreSQL fallback search implementation
   - Should test: SQL query building, fallback logic

---

#### 🔴 Infrastructure Event Handlers (2 files)

**Event Handlers (Missing Tests):**
1. `infrastructure/event-handlers/listing-approved.handler.ts` ⚠️ **HAS TESTS** - listing-approved.handler.spec.ts
2. `infrastructure/event-handlers/listing-status-changed.handler.ts` - ✗ **NO TEST FILE**
   - Handles listing status change events
   - Should test: event processing, search index updates

---

#### 🔴 Presentation Layer (3 files)

**Controllers (1 file - Already Tested!):**
1. `presentation/controllers/search.controller.ts` ⚠️ **HAS TESTS** - search.controller.spec.ts

**DTOs (2 files - Missing Tests):**
2. `presentation/dto/geo-search.dto.ts` - ✗ **NO TEST FILE**
   - Geographic search input validation
   - Should test: geo-coordinate validation, radius validation

3. `presentation/dto/search-properties.dto.ts` - ✗ **NO TEST FILE**
   - Property search input validation
   - Should test: filter validation, pagination validation

**Module Definition:**
4. `search.module.ts` - ✗ **NO TEST FILE** (NestJS module configuration)

---

### PRIORITY RANKING FOR NEW TESTS

**TIER 1 - CRITICAL (Core Search Functionality):**
1. `infrastructure/services/typesense-client.service.ts` - Typesense integration
2. `infrastructure/services/postgres-search.repository.ts` - Fallback search

**TIER 2 - HIGH (Event Handling):**
3. `infrastructure/event-handlers/listing-status-changed.handler.ts` - Status change indexing

**TIER 3 - MEDIUM (Presentation & DTOs):**
4. `presentation/dto/geo-search.dto.ts` - Geographic search validation
5. `presentation/dto/search-properties.dto.ts` - Property search validation

**TIER 4 - LOW (Configuration):**
6. `search.module.ts` - Module configuration

---

---

## CONSOLIDATED TEST GAP ANALYSIS

### Critical Files MISSING Tests (Security & Business Logic Priority)

**AUTH Module - SECURITY CRITICAL:**
1. ⚠️ `presentation/guards/jwt-auth.guard.ts` - **MUST TEST** (token validation)
2. ⚠️ `presentation/guards/roles.guard.ts` - **MUST TEST** (authorization)
3. ⚠️ `infrastructure/repositories/prisma-user.repository.ts` - **MUST TEST** (data access)
4. ⚠️ `infrastructure/strategies/jwt.strategy.ts` - **MUST TEST** (authentication)

**LISTINGS Module - BUSINESS LOGIC CRITICAL:**
1. ⚠️ `infrastructure/services/prisma-duplicate-detector.ts` - Duplicate detection
2. ⚠️ `infrastructure/services/prisma-price-validator.ts` - Price validation
3. ⚠️ `infrastructure/repositories/prisma-listing.repository.ts` - Listing data access
4. ⚠️ `domain/services/moderation.service.ts` - Moderation logic

**SEARCH Module - INTEGRATION CRITICAL:**
1. ⚠️ `infrastructure/services/typesense-client.service.ts` - Search engine integration
2. ⚠️ `infrastructure/services/postgres-search.repository.ts` - Fallback search

---

### Summary of Test Coverage by Layer

| Layer | Module | Files | Tests | Coverage |
|-------|--------|-------|-------|----------|
| **Domain/Entities** | Listings | 3 | 3 | 100% ✓ |
| **Domain/Entities** | Auth | 1 | 1 | 100% ✓ |
| **Domain/Value Objects** | Listings | 3 | 3 | 100% ✓ |
| **Domain/Value Objects** | Auth | 3 | 3 | 100% ✓ |
| **Domain/Value Objects** | Search | 2 | 2 | 100% ✓ |
| **Domain/Events** | Listings | 4 | 1 | 25% |
| **Domain/Events** | Auth | 4 | 1 | 25% |
| **Domain/Services** | Listings | 3 | 2 | 67% |
| **Domain/Repositories** | Listings | 3 | 0 | 0% |
| **Domain/Repositories** | Auth | 2 | 0 | 0% |
| **Domain/Repositories** | Search | 1 | 0 | 0% |
| **Application/Handlers** | Listings | 8 | 8 | 100% ✓ |
| **Application/Handlers** | Auth | 12 | 12 | 100% ✓ |
| **Application/Handlers** | Search | 8 | 8 | 100% ✓ |
| **Infrastructure/Repositories** | Listings | 3 | 0 | 0% |
| **Infrastructure/Repositories** | Auth | 2 | 0 | 0% |
| **Infrastructure/Services** | Listings | 3 | 1 | 33% |
| **Infrastructure/Services** | Auth | 2 | 2 | 100% ✓ |
| **Infrastructure/Services** | Search | 5 | 3 | 60% |
| **Infrastructure/Strategies** | Auth | 4 | 2 | 50% |
| **Infrastructure/Event Handlers** | Search | 2 | 1 | 50% |
| **Presentation/Controllers** | Listings | 1 | 0 | 0% |
| **Presentation/Controllers** | Auth | 3 | 0 | 0% |
| **Presentation/Controllers** | Search | 1 | 1 | 100% ✓ |
| **Presentation/Guards** | Auth | 4 | 0 | 0% |
| **Presentation/Decorators** | Auth | 2 | 0 | 0% |
| **Presentation/DTOs** | All | 17 | 0 | 0% |

---

## RECOMMENDATIONS

### Immediate Actions (Week 1)

1. **Create 5 critical tests for AUTH module:**
   - `presentation/guards/jwt-auth.guard.spec.ts`
   - `presentation/guards/roles.guard.spec.ts`
   - `infrastructure/repositories/prisma-user.repository.spec.ts`
   - `infrastructure/strategies/jwt.strategy.spec.ts`
   - `infrastructure/strategies/local.strategy.spec.ts`

2. **Create 4 critical tests for LISTINGS module:**
   - `infrastructure/repositories/prisma-listing.repository.spec.ts`
   - `infrastructure/services/prisma-duplicate-detector.spec.ts`
   - `infrastructure/services/prisma-price-validator.spec.ts`
   - `domain/services/moderation.service.spec.ts`

### Short Term (Week 2-3)

3. **Infrastructure Repository Tests:**
   - All Prisma repository implementations
   - Search repository implementations

4. **Integration/Event Tests:**
   - Event handler tests for all domain events
   - Event publishing verification

5. **Presentation Layer Tests:**
   - All controllers
   - All guards and decorators
   - DTO validation tests

### Medium Term (Week 4+)

6. **End-to-End Tests:**
   - Full user flow tests (registration → authentication → data access)
   - Listing lifecycle tests (creation → moderation → publishing)
   - Search feature tests (indexing → retrieval)

---

## Test Files Quick Reference

### Listings Test Files (13 total)
```
application/__tests__/
  ├── create-listing.handler.spec.ts
  ├── get-listing.handler.spec.ts
  ├── get-pending-moderation.handler.spec.ts
  ├── moderate-listing.handler.spec.ts
  ├── price-validator.spec.ts
  ├── search-listings.handler.spec.ts
  ├── update-listing-status.handler.spec.ts
  └── upload-media.handler.spec.ts

domain/__tests__/
  ├── duplicate-detector.spec.ts
  ├── listing-events.spec.ts
  ├── listing.entity.spec.ts
  ├── property.entity.spec.ts
  └── value-objects.spec.ts
```

### Auth Test Files (21 total)
```
application/__tests__/ (12 files)
  ├── cancel-user-deletion.handler.spec.ts
  ├── export-user-data.handler.spec.ts
  ├── force-delete-user.handler.spec.ts
  ├── get-agent-by-user-id.handler.spec.ts
  ├── get-profile.handler.spec.ts
  ├── login-user.handler.spec.ts
  ├── process-scheduled-deletions.handler.spec.ts
  ├── refresh-token.handler.spec.ts
  ├── register-user.handler.spec.ts
  ├── request-user-deletion.handler.spec.ts
  └── verify-kyc.handler.spec.ts

infrastructure/__tests__/ (4 files)
  ├── google-oauth.strategy.spec.ts
  ├── oauth.service.spec.ts
  ├── token.service.spec.ts
  └── zalo-oauth.strategy.spec.ts

domain/__tests__/ (5 files)
  ├── auth-events.spec.ts
  ├── email.vo.spec.ts
  ├── hashed-password.vo.spec.ts
  ├── phone.vo.spec.ts
  └── user.entity.spec.ts

__tests__/
  └── auth.integration.spec.ts
```

### Search Test Files (10 total)
```
application/__tests__/ (4 files)
  ├── geo-search.handler.spec.ts
  ├── reindex-all.handler.spec.ts
  ├── search-properties.handler.spec.ts
  └── sync-listing.handler.spec.ts

infrastructure/__tests__/ (4 files)
  ├── listing-approved.handler.spec.ts
  ├── listing-indexer.service.spec.ts
  ├── resilient-search.repository.spec.ts
  └── typesense-search.repository.spec.ts

domain/__tests__/
  └── search-domain.spec.ts

presentation/__tests__/
  └── search.controller.spec.ts
```

---

## Conclusion

The GoodGo Platform AI monorepo has a **37% test coverage** across the three critical modules examined, with significant gaps in:

- **Security-critical guards and strategies (AUTH)**
- **Infrastructure data access layers (all modules)**
- **Presentation layer controllers and DTOs (all modules)**
- **Domain event models (LISTINGS & AUTH)**

The **Search module** shows the strongest test coverage at **45%**, with most handlers and services tested. The **Listings and Auth modules** need immediate attention to the security and business logic components identified in Tier 1 recommendations.