17. Laravel Testing

🧠 Laravel Testing

I use Laravel’s built-in testing tools to ensure application reliability, correctness, and maintainability through automated tests.

🎯 Simple Idea

Write tests
 ↓
Run tests automatically
 ↓
Verify application behavior

👉 “Test before and after changes to avoid breaking features”

🧩 Types of Testing I Use

Feature Testing

Tests full request flow (HTTP → Controller → Service → Database)

public function test_user_can_register()
{
    $response = $this->post('/register', [
        'name' => 'Kaung',
        'email' => 'test@mail.com',
        'password' => 'password',
    ]);

    $response->assertStatus(200);
}

👉 Used for API endpoints, authentication, workflows

Unit Testing

Tests small, isolated logic (Service / Helper)

public function test_calculate_salary()
{
    $result = $this->salaryService->calculate(1000);

    $this->assertEquals(1000, $result);
}

👉 Used for business logic validation

Database Testing

Ensures database behavior is correct

$this->assertDatabaseHas('users', [
    'email' => 'test@mail.com',
]);

👉 Used for data integrity and persistence checks

🧱 Setup & Configuration

SQLite (in-memory) → fast testing
MySQL → closer to production

Run tests:

php artisan test

🧠 What I Test

📌 How It Fits My Architecture

Controller → Feature Test
Service → Unit Test
Repository/DB → Database Assertions

👉 Works well with Service Layer + Repository Pattern

⚖️ Trade-offs

💬 Summary

I use Laravel Testing (PHPUnit) to validate API behavior, business logic, and database operations, ensuring the system is stable and production-ready.

Write Test
→ Run Test
→ Validate Feature
→ Prevent Bugs

👉 This helps me build reliable, testable, and maintainable systems 🚀