# 🎯 QUICK REFERENCE: 3 Missing Test Files

## Priority: HIGH - All need tests

### 1️⃣ reject-listing.handler.spec.ts
**Location:** `apps/api/src/modules/admin/application/__tests__/`
**Pattern to follow:** `approve-listing.handler.spec.ts`
**Test coverage needed:**
- ✅ Happy path: Successfully rejects PENDING_REVIEW listing
- ✅ Error: NotFoundException when listing doesn't exist  
- ✅ Error: ValidationException for wrong listing status
- ✅ Verify: listingRepo.update() called once
- ✅ Verify: ListingRejectedEvent published with correct data

**Key code:**
- Command: RejectListingCommand(listingId, adminId, reason)
- Handler: RejectListingHandler
- Event: ListingRejectedEvent
- Result: { listingId, status: 'REJECTED', message }

---

### 2️⃣ get-revenue-stats.handler.spec.ts
**Location:** `apps/api/src/modules/admin/application/__tests__/`
**Pattern to follow:** `get-dashboard-stats.handler.spec.ts`
**Test coverage needed:**
- ✅ Query returns RevenueStatsItem[] from repository
- ✅ Verify: adminQueryRepo.getRevenueStats() called with startDate, endDate, groupBy
- ✅ Support both 'day' and 'month' groupBy values
- ✅ Default groupBy is 'month'
- ✅ Handle empty results (empty array)

**Key code:**
- Query: GetRevenueStatsQuery(startDate, endDate, groupBy='month')
- Handler: GetRevenueStatsHandler
- Returns: RevenueStatsItem[] with { period, totalRevenue, subscriptionRevenue, listingFeeRevenue, featuredListingRevenue, transactionCount }

---

### 3️⃣ user-deactivated.listener.spec.ts
**Location:** `apps/api/src/modules/admin/application/__tests__/`
**Pattern to follow:** `user-banned.listener.spec.ts`
**Test coverage needed:**
- ✅ Event listener handles 'user.deactivated' event
- ✅ Expires listings with status ACTIVE or PENDING_REVIEW
- ✅ Only updates deactivated user's listings
- ✅ Logs initial handling and result
- ✅ Handle case with 0 listings updated
- ✅ Handle case with multiple listings updated

**Key code:**
- Listener: UserDeactivatedListener
- Event: UserDeactivatedEvent (async: true)
- Action: prisma.listing.updateMany() where sellerId matches & status in [ACTIVE, PENDING_REVIEW]
- Logging: Initial + result count

---

## Mock Setup Templates

### For Handler (Command):
```typescript
mockListingRepo = { findById, update, ... };
mockEventBus = { publish };
handler = new RejectListingHandler(mockListingRepo, mockEventBus);
```

### For Query Handler:
```typescript
mockAdminQueryRepo = { getRevenueStats };
handler = new GetRevenueStatsHandler(mockAdminQueryRepo);
```

### For Listener:
```typescript
mockPrisma = { listing: { updateMany }, user: { findUnique } };
mockLogger = { log };
listener = new UserDeactivatedListener(mockPrisma, mockLogger);
```

---

## Testing Checklist

- [ ] reject-listing.handler.spec.ts created
- [ ] get-revenue-stats.handler.spec.ts created  
- [ ] user-deactivated.listener.spec.ts created
- [ ] All tests pass: `npm test admin`
- [ ] Coverage report shows green for all 3 files
