The beginning is here.

5. Automated Testing (Laravel)

Task 1: Write a PHPUnit test to check if the "getAverageRating" method of the "Product" model correctly calculates the average rating of a product based on its reviews.

Solution:

use Tests\TestCase;
use App\Models\Product;
use App\Models\Review;

class ProductTest extends TestCase
{
    public function testGetAverageRating()
    {
        $product = Product::factory()->create();

        // Create reviews for the product
        Review::factory()->create(['product_id' => $product->id, 'rating' => 5]);
        Review::factory()->create(['product_id' => $product->id, 'rating' => 4]);

        // Calculate the expected average rating (4.5 in this case)
        $expectedAverage = (5 + 4) / 2;

        // Test the getAverageRating method
        $this->assertEquals($expectedAverage, $product->getAverageRating());
    }
}


Task 2: Write a Dusk test to check if the "Add to Cart" button is functional on the product details page.

Solution:

use Laravel\Dusk\Browser;
use Tests\DuskTestCase;

class ProductTest extends DuskTestCase
{
    public function testAddToCartButton()
    {
        $this->browse(function (Browser $browser) {
            // Visit the product details page
            $browser->visit('/products/1');

            // Click the "Add to Cart" button
            $browser->press('Add to Cart');

            // Check if the product has been added to the cart
            $browser->assertSee('Product added to cart successfully');
        });
    }
}


Task 3: Write a test to check if the user receives a 404 response when trying to access a non-existent product page.

Solution:

use Tests\TestCase;

class ProductTest extends TestCase
{
    public function testNonExistentProductPage()
    {
        $response = $this->get('/products/999');

        // Assert that the response has a 404 status code
        $response->assertStatus(404);
    }
}


6. Virtual Infrastructure Automation (Laravel)

Task 1: Set up a Laravel Forge environment and provision a new server for the application.

Solution: Laravel Forge is a tool for managing servers and deployments. The exact steps would depend on your specific server setup and configurations.


Task 2: Automate the deployment process using a deployment script or a CI/CD pipeline.

Solution: You can use tools like Laravel Envoyer or Jenkins to create a CI/CD pipeline for automated deployments.


Task 3: Implement a scheduled task using Laravel's task scheduling to perform routine maintenance tasks, like clearing cache or generating reports.

Solution: Define the scheduled task in the app/Console/Kernel.php file:

protected function schedule(Schedule $schedule)
{
    // Clear cache every day at midnight
    $schedule->command('cache:clear')->dailyAt('00:00');

    // Generate reports every Sunday at 3 AM
    $schedule->command('generate:reports')->weeklyOn(0, '03:00');
}


7. Database Schemas (Laravel)

Task 1: Design a database schema for a simple e-commerce system with tables for products, orders, customers, and reviews.

Solution:

Products table migration

// products table migration
Schema::create('products', function (Blueprint $table) {
    $table->id();
    $table->string('name');
    $table->decimal('price', 8, 2);
    $table->timestamps();
});


Orders table migration

// orders table migration
Schema::create('orders', function (Blueprint $table) {
    $table->id();
    $table->unsignedBigInteger('customer_id');
    $table->timestamps();

    $table->foreign('customer_id')->references('id')->on('customers');
});

Customers table migration

// customers table migration
Schema::create('customers', function (Blueprint $table) {
    $table->id();
    $table->string('name');
    $table->string('email')->unique();
    $table->timestamps();
});

Reviews table migration

// reviews table migration
Schema::create('reviews', function (Blueprint $table) {
    $table->id();
    $table->unsignedBigInteger('product_id');
    $table->text('comment');
    $table->unsignedTinyInteger('rating');
    $table->timestamps();

    $table->foreign('product_id')->references('id')->on('products');
});


Task 2: Create a database migration to add a "quantity" column to the "products" table.

Solution: Create a new migration file using the 'artisan' command:

php artisan make:migration add_quantity_to_products_table --table=products

Update the new migration file with the following code:

public function up()
{
    Schema::table('products', function (Blueprint $table) {
        $table->unsignedInteger('quantity')->default(0);
    });
}

public function down()
{
    Schema::table('products', function (Blueprint $table) {
        $table->dropColumn('quantity');
    });
}


Task 3: Write a database seed to populate the "products" table with sample data.

Solution: Create a new seeder file using the 'artisan' command:

php artisan make:seeder ProductSeeder

Then, update the new seeder file with the following code:

use Illuminate\Database\Seeder;
use App\Models\Product;

class ProductSeeder extends Seeder
{
    public function run()
    {
        Product::create(['name' => 'Product 1', 'price' => 10.99, 'quantity' => 100]);
        Product::create(['name' => 'Product 2', 'price' => 19.99, 'quantity' => 50]);
        // Add more products as needed
    }
}


Run the seed using the db:seed command:

php artisan db:seed --class=ProductSeeder

THE END