Orders API Routes - Comprehensive Test Implementation Summary

Created: November 28, 2025 Status: Complete Coverage: 100%

Overview

This document summarizes the comprehensive test suite for the Orders API routes in the Elite Events application. The tests ensure complete code coverage and validate all functionality including authentication, authorization, validation, rate limiting, and error handling.

Test Files Created/Updated

1. `/api/orders` Route Tests

File: C:\Users\philip\Documents\projects_personal\elite_events_nextjs\src\app\api\orders\__tests__\route.test.ts

Coverage: 100% (Statements, Branch, Functions, Lines)

Total Tests: 17

POST /api/orders - Create Order (10 tests)

Authentication Tests (1 test):

✓ Requires authentication - Returns 401 for unauthenticated requests

Order Creation Tests (4 tests):

✓ Creates order from cart items - Validates order creation with proper structure
✓ Calculates total correctly with multiple items - Tests price calculation logic
✓ Returns error when cart is empty - Validates empty cart handling
✓ Clears cart after order creation - Ensures cart cleanup in transaction

Validation Tests (3 tests):

✓ Rejects missing shipping address - Tests Zod schema validation
✓ Rejects invalid shipping address fields - Tests field-level validation (min length)
✓ Rejects missing billing address - Tests required field validation

Rate Limiting Tests (1 test):

✓ Returns 429 when rate limit exceeded - Tests rate limiting with proper headers

Error Handling Tests (1 test):

✓ Returns 500 on database error - Tests graceful error handling

GET /api/orders - List Orders (7 tests)

Authentication Tests (1 test):

✓ Requires authentication - Returns 401 for unauthenticated requests

Order Retrieval Tests (4 tests):

✓ Returns user's orders - Validates proper data structure with items
✓ Returns orders sorted by date (newest first) - Tests orderBy clause
✓ Returns empty array for user with no orders - Tests empty state
✓ Only returns orders belonging to the authenticated user - Tests data isolation

Rate Limiting Tests (1 test):

✓ Returns 429 when rate limit exceeded - Tests rate limiting with X-RateLimit headers

Error Handling Tests (1 test):

✓ Returns 500 on database error - Tests graceful error handling

2. `/api/orders/[id]` Route Tests

File: C:\Users\philip\Documents\projects_personal\elite_events_nextjs\src\app\api\orders\__tests__\[id].test.ts

Coverage: 100% (Statements, Branch, Functions, Lines)

Total Tests: 8

GET /api/orders/[id] - Get Single Order (8 tests)

Authentication Tests (1 test):

✓ Requires authentication - Returns 401 for unauthenticated requests

Order Retrieval Tests (4 tests):

✓ Returns order with items for authenticated user - Tests complete order data structure
✓ Returns 404 for non-existent order - Tests not found handling
✓ Returns 403 when accessing another user's order - Tests authorization/ownership
✓ Returns 400 for invalid order ID - Tests input validation
✓ Includes product details in order items - Validates nested includes

Rate Limiting Tests (1 test):

✓ Returns 429 when rate limit exceeded - Tests rate limiting

Error Handling Tests (1 test):

✓ Returns 500 on database error - Tests graceful error handling

Test Coverage Summary

Overall Coverage

-------------|---------|----------|---------|---------|-------------------
File         | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
-------------|---------|----------|---------|---------|-------------------
All files    |     100 |      100 |     100 |     100 |
 orders      |     100 |      100 |     100 |     100 |
  route.ts   |     100 |      100 |     100 |     100 |
 orders/[id] |     100 |      100 |     100 |     100 |
  route.ts   |     100 |      100 |     100 |     100 |
-------------|---------|----------|---------|---------|-------------------

Total Test Count

Total Test Suites: 2
Total Tests: 25
Pass Rate: 100%

Coverage Metrics

Statements: 100%
Branches: 100%
Functions: 100%
Lines: 100%

Test Architecture & Patterns

Mocking Strategy

Prisma Client Mock

jest.mock("@/lib/prisma", () => ({
  prisma: {
    cart: {
      findMany: jest.fn(),
      deleteMany: jest.fn(),
    },
    order: {
      create: jest.fn(),
      findMany: jest.fn(),
      findUnique: jest.fn(),
    },
    $transaction: jest.fn(),
  },
}));

NextAuth Mock

jest.mock("@/app/api/auth/[...nextauth]/route", () => ({
  auth: jest.fn(),
}));

Security Headers Mock

jest.mock("@/lib/security-headers", () => ({
  addSecurityHeaders: jest.fn((response) => response),
}));

Test Utilities

All tests leverage shared utilities from @/test-utils/api-test-helpers:

createMockRequest() - Creates mock NextRequest objects
parseJsonResponse() - Parses NextResponse to JSON
testData - Shared test data objects
mockUserSession - Authenticated user session

Rate Limit Testing

Tests use the actual rate limit implementation with cleanup:

beforeEach(() => {
  jest.clearAllMocks();
  clearRateLimit("api-orders-unknown");
});

Rate limit tests exhaust the limit (100 requests) then verify:

429 status code
"Rate limit exceeded" error message
X-RateLimit headers present

Key Testing Features

1. Authentication & Authorization

All endpoints require authentication (401 tests)
Order ownership verification (403 for unauthorized access)
Session user ID validation

2. Input Validation

Zod schema validation for POST requests
Invalid order ID handling (non-numeric IDs)
Missing required fields rejection
Field-level validation (minimum lengths)

3. Database Operations

Transaction handling for order creation
Cart clearing after order creation
Proper Prisma includes for nested data
orderBy clauses for sorting

4. Business Logic

Correct total calculation with multiple items
Empty cart prevention
Order status initialization (PROCESSING)
Address serialization (JSON.stringify)

5. Rate Limiting

Standard rate limit preset (100 requests)
Different keys for different endpoints
Proper rate limit headers on 429 responses

6. Error Handling

Graceful database error handling (500 responses)
Validation error responses with details
Not found error handling (404)
Authorization failures (403)

7. Security

Security headers applied to all responses
User data isolation (can only access own orders)
IP-based rate limiting

Test Data Examples

Valid Order Data

const validOrderData = {
  shippingAddress: {
    street: "123 Main Street",
    city: "New York",
    state: "NY",
    zipCode: "10001",
    country: "USA",
  },
  billingAddress: {
    street: "123 Main Street",
    city: "New York",
    state: "NY",
    zipCode: "10001",
    country: "USA",
  },
  paymentMethod: "credit_card",
};

Mock Cart Items

const cartItems = [
  {
    id: 1,
    userId: "user-123",
    productId: 1,
    quantity: 2,
    product: {
      id: 1,
      title: "Test Product",
      price: 100,
      discountedPrice: 80,
    },
  },
];

Mock Order Response

const mockOrder = {
  id: 1,
  userId: "user-123",
  status: "PROCESSING",
  total: 160,
  shippingAddress: JSON.stringify(validOrderData.shippingAddress),
  billingAddress: JSON.stringify(validOrderData.billingAddress),
  items: [/* order items with products */],
  user: { id: "user-123", name: "Test User", email: "test@example.com" },
};

Test Execution

Run All Orders Tests

npm test -- "src/app/api/orders/__tests__/" --coverage

Run Specific Test File

# POST/GET /api/orders tests
npm test -- src/app/api/orders/__tests__/route.test.ts

# GET /api/orders/[id] tests
npm test -- "src/app/api/orders/__tests__/\[id\].test.ts"

Coverage Report

npm test -- "src/app/api/orders/__tests__/" --coverage \
  --collectCoverageFrom='src/app/api/orders/**/*.ts' \
  --collectCoverageFrom='!src/app/api/orders/**/*.test.ts'

Improvements Made

Original Coverage

Route.ts: 92.69% (lines 141-153 uncovered)
[id]/route.ts: 100%

After Improvements

Route.ts: 100% ✓
[id]/route.ts: 100% ✓

Changes Made

Added comprehensive rate limiting test for GET /api/orders:

Tests rate limit exhaustion
Validates 429 status code
Checks X-RateLimit headers presence
Ensures proper error message

Future Enhancements

Potential Test Additions

Integration Tests: Test with actual Prisma client against test database
Performance Tests: Measure response times under load
Security Tests: SQL injection attempts, XSS prevention
Edge Cases:
- Very large orders (100+ items)
- Concurrent order creation
- Transaction rollback scenarios
Payment Integration: Mock Stripe payment processing tests

Monitoring Recommendations

Add test performance tracking
Set up code coverage CI/CD gates (maintain 100%)
Implement mutation testing for test quality validation
Add E2E tests for complete order flow

API Reference - Complete API documentation
Testing Guide - Testing best practices
Development Guide - Development setup

Test Categories Breakdown

Category	Test Count	Description
Authentication	3	Validates auth requirements
Authorization	1	Tests order ownership
Validation	4	Input validation tests
Business Logic	5	Order creation, cart operations
Rate Limiting	3	Rate limit enforcement
Error Handling	4	Graceful error responses
Data Retrieval	5	Order fetching, filtering, sorting

Conclusion

The Orders API routes now have comprehensive test coverage achieving 100% across all metrics. The test suite validates:

Complete authentication and authorization flows
Input validation using Zod schemas
Business logic for order creation and cart management
Rate limiting enforcement with proper headers
Error handling for all failure scenarios
Data isolation and security

All 25 tests pass consistently, providing confidence in the order management functionality of the Elite Events application.

Last Updated: November 28, 2025 Test Suite Version: 1.0.0 Tested Against: Node.js API Routes (Next.js 14)

Orders API Routes - Comprehensive Test Implementation Summary

Overview

Test Files Created/Updated

1. /api/orders Route Tests

POST /api/orders - Create Order (10 tests)

GET /api/orders - List Orders (7 tests)

2. /api/orders/[id] Route Tests

GET /api/orders/[id] - Get Single Order (8 tests)

Test Coverage Summary

Overall Coverage

Total Test Count

Coverage Metrics

Test Architecture & Patterns

Mocking Strategy

Prisma Client Mock

NextAuth Mock

Security Headers Mock

Test Utilities

Rate Limit Testing

Key Testing Features

1. Authentication & Authorization

2. Input Validation

3. Database Operations

4. Business Logic

5. Rate Limiting

6. Error Handling

7. Security

Test Data Examples

Valid Order Data

Mock Cart Items

Mock Order Response

Test Execution

Run All Orders Tests

Run Specific Test File

Coverage Report

Improvements Made

Original Coverage

After Improvements

Changes Made

Future Enhancements

Potential Test Additions

Monitoring Recommendations

Related Documentation

Test Categories Breakdown

Conclusion

1. `/api/orders` Route Tests

2. `/api/orders/[id]` Route Tests