# Test Centralization Summary

All tests have been centralized into the `tests/` directory following standard testing conventions.

## 📁 New Test Structure

```
tests/
├── run-tests.php           # Main test runner
├── README.md               # Test documentation
├── Unit/                   # Unit tests
│   ├── DatabaseTest.php    # Database connection & queries
│   └── RateLimitTest.php   # Rate limiting functionality
├── Integration/            # Integration tests
│   └── SearchTest.php      # Search functionality
└── Security/               # Security tests
    └── SecurityTest.php    # SQL injection & XSS protection
```

## ✅ What Was Done

### 1. Created Test Directory Structure
- `tests/Unit/` - Tests for individual components
- `tests/Integration/` - Tests for feature workflows
- `tests/Security/` - Tests for security vulnerabilities

### 2. Moved & Created Tests

**Before:**
- `test_db.php` (root) - Basic database test
- `run-tests.php` (root) - Old test runner

**After:**
- `tests/Unit/DatabaseTest.php` - Comprehensive database testing
- `tests/Unit/RateLimitTest.php` - Rate limit testing
- `tests/Integration/SearchTest.php` - Search functionality testing
- `tests/Security/SecurityTest.php` - Security testing
- `tests/run-tests.php` - New unified test runner
- `tests/README.md` - Complete test documentation

### 3. Updated Justfile

**New Commands:**
```bash
just test              # Run all tests
just test-unit         # Run unit tests only
just test-integration  # Run integration tests only
just test-security     # Run security tests only
just syntax            # Check PHP syntax
```

**Removed:**
- Old scattered test commands
- Duplicate test logic

### 4. Removed Old Files
- ✅ Deleted `test_db.php` from root
- ✅ Deleted `run-tests.php` from root

---

## 🚀 Running Tests

### Run All Tests (Recommended)

```bash
just test
```

Output:
```
╔════════════════════════════════════════════╗
║         Post-ERG Test Suite                ║
╚════════════════════════════════════════════╝

┌─────────────────────────────────────────┐
│ Database (Unit)                          │
└─────────────────────────────────────────┘
✓ PASS: Database connection successful
✓ PASS: Found 16 published theses
...
✅ TEST PASSED

...

╔════════════════════════════════════════════╗
║              Test Summary                  ║
╠════════════════════════════════════════════╣
║ Total:   4                                 ║
║ Passed:  4 ✅                              ║
║ Failed:  0                                  ║
╚════════════════════════════════════════════╝

✅ All tests passed!
```

### Run Specific Test Suites

```bash
# Unit tests only
just test-unit

# Integration tests only
just test-integration

# Security tests only
just test-security

# Syntax check only
just syntax
```

### Run Individual Tests

```bash
# Database test
php tests/Unit/DatabaseTest.php

# Search test
php tests/Integration/SearchTest.php

# Security test
php tests/Security/SecurityTest.php

# Rate limit test
php tests/Unit/RateLimitTest.php
```

---

## ✅ Test Coverage

### Unit Tests (2)

**DatabaseTest.php** - 4 assertions
- ✅ Database connection
- ✅ Count published theses
- ✅ Get published theses
- ✅ Get single thesis by ID

**RateLimitTest.php** - 5 assertions
- ✅ RateLimit initialization
- ✅ check() method returns boolean
- ✅ sendHeaders() executes
- ✅ getResetTime() returns valid value
- ✅ cleanup() executes

### Integration Tests (1)

**SearchTest.php** - 3 assertions
- ✅ Empty search query handling
- ✅ Search for specific terms
- ✅ Special characters in search

### Security Tests (1)

**SecurityTest.php** - 3 test groups
- ✅ SQL injection protection (4 injection attempts blocked)
- ✅ Invalid ID rejection (4 invalid IDs rejected)
- ✅ XSS protection verification

**Total: 4 test files, 15 assertions**

---

## 📝 Test Results

All tests passing:

```
✅ Database (Unit)         - PASSED
✅ Rate Limit (Unit)       - PASSED
✅ Search (Integration)    - PASSED
✅ Security                - PASSED

Total:   4
Passed:  4 ✅
Failed:  0
```

---

## 🎯 Benefits

### Before Centralization
- ❌ Tests scattered in root directory
- ❌ No clear organization
- ❌ Hard to run specific test types
- ❌ No test documentation
- ❌ Inconsistent test format

### After Centralization
- ✅ All tests in `tests/` directory
- ✅ Clear organization (Unit/Integration/Security)
- ✅ Easy to run any combination
- ✅ Comprehensive test documentation
- ✅ Consistent test format and output
- ✅ Single test runner
- ✅ Beautiful formatted output

---

## 📚 Writing New Tests

### 1. Choose Test Type

- **Unit Test** → `tests/Unit/` - Tests single functions/classes
- **Integration Test** → `tests/Integration/` - Tests feature workflows
- **Security Test** → `tests/Security/` - Tests security measures

### 2. Use Template

```php
<?php
/**
 * Test Name
 * Description
 */

require_once __DIR__ . '/../../lib/YourClass.php';

echo "Test Name\n";
echo "=========\n\n";

try {
    echo "Test 1: Description\n";
    // ... test code ...
    echo "✓ PASS: Test passed\n\n";

    echo "✅ All tests passed!\n";
    return true;

} catch (Exception $e) {
    echo "❌ FAIL: " . $e->getMessage() . "\n";
    return false;
}
```

### 3. Add to Test Runner

Edit `tests/run-tests.php` and add your test to the `$testFiles` array:

```php
['name' => 'Your Test Name', 'path' => __DIR__ . '/Unit/YourTest.php'],
```

### 4. Run It

```bash
just test
```

---

## 🔄 CI/CD Integration (Future)

Tests are ready for CI/CD integration:

```yaml
# .github/workflows/test.yml
name: Tests
on: [push, pull_request]
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Setup PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: '8.4'
      - name: Run tests
        run: php tests/run-tests.php
```

---

## 📖 Related Documentation

- [Test README](../tests/README.md) - Complete test documentation
- [Database Specification](../database/DATABASE_SPECIFICATION.md)
- [Security Documentation](SECURITY.md)

---

## ✨ Quick Reference

| Command | Description |
|---------|-------------|
| `just test` | Run all tests |
| `just test-unit` | Unit tests only |
| `just test-integration` | Integration tests only |
| `just test-security` | Security tests only |
| `just syntax` | Check PHP syntax |
| `php tests/run-tests.php` | Run test runner directly |

---

**All tests centralized and passing!** ✅