# 📑 Index: Admin Module Missing Test Files Analysis

## 📌 Document Overview

Three comprehensive documents have been created to guide you in writing tests for the 3 missing handler/listener files in the admin module:

### 1. **ADMIN_MODULE_TEST_ANALYSIS.md** (25 KB)
**Purpose:** Complete reference guide with all source code and patterns

**Contains:**
- ✅ Full source code of all 3 untested files
- ✅ All associated command/query classes
- ✅ Complete working test files for reference (approve-listing, ban-user, user-banned)
- ✅ Detailed interface definitions
- ✅ Complete file structure of admin module
- ✅ Step-by-step testing recommendations
- ✅ Test writing checklist

**Best for:** Reading through the full context and examples

---

### 2. **DETAILED_HANDLER_COMPARISON.md** (15 KB)
**Purpose:** Side-by-side comparisons and test code walkthroughs

**Contains:**
- ✅ File structure comparisons
- ✅ Side-by-side handler code comparison (approve vs reject)
- ✅ Test code walkthrough with annotations
- ✅ How to adapt existing tests for new handlers
- ✅ Query handler patterns explained
- ✅ Listener comparison tables
- ✅ Complete test examples ready to adapt

**Best for:** Understanding the patterns and adapting test code

---

### 3. **QUICK_REFERENCE.md** (3 KB)
**Purpose:** Fast lookup while writing tests

**Contains:**
- ✅ 3 files at a glance with all key details
- ✅ Location and pattern to follow for each
- ✅ Mock setup templates
- ✅ Test coverage checklist
- ✅ High-level overview

**Best for:** Quick lookup while actively coding tests

---

## 🎯 The 3 Missing Test Files

### 1. reject-listing.handler.spec.ts
**Type:** Command Handler Test
**Location:** `apps/api/src/modules/admin/application/__tests__/`
**Reference Pattern:** `approve-listing.handler.spec.ts`
**Complexity:** Medium

**Key Testing Points:**
- Happy path: Successfully reject PENDING_REVIEW listing
- Error: NotFoundException when listing doesn't exist
- Error: ValidationException for wrong listing status

---

### 2. get-revenue-stats.handler.spec.ts
**Type:** Query Handler Test
**Location:** `apps/api/src/modules/admin/application/__tests__/`
**Reference Pattern:** `get-dashboard-stats.handler.spec.ts`
**Complexity:** Low

**Key Testing Points:**
- Query returns RevenueStatsItem[] from repository
- Verify parameters passed (startDate, endDate, groupBy)
- Support both 'day' and 'month' groupBy values

---

### 3. user-deactivated.listener.spec.ts
**Type:** Event Listener Test
**Location:** `apps/api/src/modules/admin/application/__tests__/`
**Reference Pattern:** `user-banned.listener.spec.ts`
**Complexity:** Medium

**Key Testing Points:**
- Expires ACTIVE & PENDING_REVIEW listings for deactivated user
- Logs handling start and result count
- Handles case with 0 listings updated

---

## 📖 Recommended Reading Order

### For First Time Implementation:
1. Start with **QUICK_REFERENCE.md** (3 min read)
2. Review **DETAILED_HANDLER_COMPARISON.md** (10 min read)
3. Keep **ADMIN_MODULE_TEST_ANALYSIS.md** open for detailed code reference

### For Specific Handler:
- **reject-listing**: Check `approve-listing.handler.spec.ts` example in DETAILED_HANDLER_COMPARISON.md
- **get-revenue-stats**: Check Query Handler section in DETAILED_HANDLER_COMPARISON.md
- **user-deactivated**: Check Listener Comparison section in DETAILED_HANDLER_COMPARISON.md

---

## 🔍 What Each Document Covers

### ADMIN_MODULE_TEST_ANALYSIS.md Sections:
1. **Section 1:** Untested Handler Files (with full source code)
2. **Section 2:** Existing Test Files Structure & Patterns
3. **Section 3:** Handler Code for Reference (ban-user example)
4. **Section 4:** Infrastructure Files (context only)
5. **Section 5:** Presentation Layer (context only)
6. **Section 6:** Test Writing Recommendations
7. **Section 7:** Complete File Structure

### DETAILED_HANDLER_COMPARISON.md Sections:
1. **File Structure Comparison:** Directory layouts
2. **Side-by-Side Handler Comparison:** approve vs reject
3. **Test Code Walkthrough:** approve-listing test annotated
4. **How to Adapt:** For reject-listing
5. **Query Handler Comparison:** dashboard-stats vs revenue-stats
6. **Query Handler Test Pattern:** Full example
7. **Listener Comparison:** user-banned vs user-deactivated
8. **Listener Test Pattern:** Full example

### QUICK_REFERENCE.md Sections:
1. **Handler 1:** reject-listing overview
2. **Handler 2:** get-revenue-stats overview
3. **Handler 3:** user-deactivated overview
4. **Mock Setup Templates:** For each type
5. **Testing Checklist:** What to verify

---

## 💡 Quick Start Guide

### Step 1: Choose Your Handler
```
reject-listing → Use approve-listing as template
get-revenue-stats → Use get-dashboard-stats as template
user-deactivated → Use user-banned as template
```

### Step 2: Review the Reference Test
Read the reference test file from **DETAILED_HANDLER_COMPARISON.md**

### Step 3: Copy & Adapt
- Copy the test structure
- Change imports
- Adapt test data
- Verify mock calls

### Step 4: Verify Coverage
Run: `npm test admin`

---

## 📊 Test Statistics

| File | Type | Tests | Complexity |
|------|------|-------|------------|
| reject-listing.handler.spec.ts | Command | 3 | Medium |
| get-revenue-stats.handler.spec.ts | Query | 3 | Low |
| user-deactivated.listener.spec.ts | Listener | 3 | Medium |
| **Total** | - | **9** | - |

---

## ✅ Verification Checklist

After writing tests:
- [ ] All 3 test files created
- [ ] All imports correct
- [ ] All mocks set up properly
- [ ] Tests compile without errors
- [ ] `npm test admin` passes all tests
- [ ] No console warnings
- [ ] Code coverage > 85%

---

## 🔗 File Locations

**Source Files (need tests):**
- `apps/api/src/modules/admin/application/commands/reject-listing/reject-listing.handler.ts`
- `apps/api/src/modules/admin/application/queries/get-revenue-stats/get-revenue-stats.handler.ts`
- `apps/api/src/modules/admin/application/listeners/user-deactivated.listener.ts`

**Reference Test Files:**
- `apps/api/src/modules/admin/application/__tests__/approve-listing.handler.spec.ts`
- `apps/api/src/modules/admin/application/__tests__/get-dashboard-stats.handler.spec.ts`
- `apps/api/src/modules/admin/application/__tests__/user-banned.listener.spec.ts`

**Where to Create New Tests:**
- `apps/api/src/modules/admin/application/__tests__/reject-listing.handler.spec.ts` (NEW)
- `apps/api/src/modules/admin/application/__tests__/get-revenue-stats.handler.spec.ts` (NEW)
- `apps/api/src/modules/admin/application/__tests__/user-deactivated.listener.spec.ts` (NEW)

---

## 📞 Key Takeaways

1. **All 3 files** follow established patterns in the codebase
2. **Reference tests exist** for each handler type
3. **Total tests needed:** 9 (3 per file)
4. **Estimated time:** 1-2 hours to implement all
5. **Difficulty:** Low to Medium (high code reuse)
6. **Documentation:** Very thorough (all code provided)

---

Generated: 2026-04-11
All test examples ready to adapt and implement.

