laravel-testing

Laravel Testing

PHPUnit + Dusk testing patterns for Laravel 12+.

Feature Tests

<?php

namespace Tests\Feature;

use App\Models\Order;
use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class OrderTest extends TestCase
{
    use RefreshDatabase;

    /**
     * Test order creation endpoint.
     */
    public function test_user_can_create_order(): void
    {
        $user = User::factory()->create();

        $response = $this
            ->actingAs($user)
            ->postJson('/api/orders', [
                'total' => 100.00,
                'items' => [
                    ['product_id' => 1, 'quantity' => 2],
                ],
            ]);

        $response
            ->assertCreated()
            ->assertJsonStructure([
                'id',
                'status',
                'total',
            ]);

        $this->assertDatabaseHas('orders', [
            'user_id' => $user->id,
            'status' => 'pending',
        ]);
    }

    /**
     * Test authentication requirement.
     */
    public function test_order_creation_requires_authentication(): void
    {
        $this->postJson('/api/orders', [])
            ->assertUnauthorized();
    }

    /**
     * Test validation rules.
     */
    public function test_order_validates_required_fields(): void
    {
        $user = User::factory()->create();

        $this
            ->actingAs($user)
            ->postJson('/api/orders', [])
            ->assertUnprocessable()
            ->assertJsonValidationErrors(['total', 'items']);
    }
}

Unit Tests

<?php

namespace Tests\Unit;

use App\Services\TaxCalculator;
use PHPUnit\Framework\TestCase;

class TaxCalculatorTest extends TestCase
{
    /**
     * Test tax calculation with 20% rate.
     */
    public function test_calculates_tax_correctly(): void
    {
        $calculator = new TaxCalculator(taxRate: 0.20);
        
        $result = $calculator->calculate(100.00);
        
        $this->assertEquals(120.00, $result);
    }

    /**
     * Test zero amount returns zero.
     */
    public function test_zero_amount_returns_zero(): void
    {
        $calculator = new TaxCalculator(taxRate: 0.20);
        
        $this->assertEquals(0.00, $calculator->calculate(0.00));
    }
}