ifnex/04_Laravel/tests/Feature/Api/DiscountCodeControllerTest.php

<?php

namespace Tests\Feature\Api;

use App\Models\DiscountCode;
use Illuminate\Foundation\Testing\RefreshDatabase;
use PHPUnit\Framework\Attributes\Test;
use Tests\TestCase;

class DiscountCodeControllerTest extends TestCase
{
    use RefreshDatabase;

    #[Test]
    public function it_returns_active_discount_codes()
    {
        DiscountCode::create([
            'code' => 'TEST10',
            'type' => 'percentage',
            'value' => 10,
            'min_order_amount' => 100000,
            'is_active' => true,
        ]);

        DiscountCode::create([
            'code' => 'INACTIVE',
            'type' => 'fixed',
            'value' => 50000,
            'is_active' => false,
        ]);

        $response = $this->get('/api/v1/discount-codes');

        $response->assertStatus(200)
            ->assertJson([
                'codes' => [
                    [
                        'code' => 'TEST10',
                        'type' => 'percentage',
                        'value' => 10,
                    ],
                ],
            ])
            ->assertJsonCount(1, 'codes');
    }

    #[Test]
    public function it_validates_discount_code_successfully()
    {
        DiscountCode::create([
            'code' => 'PERCENT10',
            'type' => 'percentage',
            'value' => 10,
            'min_order_amount' => 100000,
            'is_active' => true,
        ]);

        $response = $this->post('/api/v1/discount-codes/validate', [
            'code' => 'PERCENT10',
            'total_price' => 500000,
        ]);

        $response->assertStatus(200)
            ->assertJson([
                'valid' => true,
                'type' => 'percentage',
                'value' => 10,
                'discount_amount' => 50000,
                'final_price' => 450000,
            ]);
    }

    #[Test]
    public function it_rejects_invalid_discount_code()
    {
        $response = $this->post('/api/v1/discount-codes/validate', [
            'code' => 'INVALID',
            'total_price' => 500000,
        ]);

        $response->assertStatus(200)
            ->assertJson([
                'valid' => false,
                'message' => 'کد تخفیف نامعتبر است.',
            ]);
    }

    #[Test]
    public function it_rejects_expired_discount_code()
    {
        DiscountCode::create([
            'code' => 'EXPIRED',
            'type' => 'fixed',
            'value' => 50000,
            'is_active' => true,
            'expires_at' => now()->subDay(),
        ]);

        $response = $this->post('/api/v1/discount-codes/validate', [
            'code' => 'EXPIRED',
            'total_price' => 500000,
        ]);

        $response->assertStatus(200)
            ->assertJson([
                'valid' => false,
                'message' => 'این کد تخفیف منقضی شده است.',
            ]);
    }

    #[Test]
    public function it_rejects_code_below_minimum_order_amount()
    {
        DiscountCode::create([
            'code' => 'MIN500',
            'type' => 'fixed',
            'value' => 50000,
            'min_order_amount' => 500000,
            'is_active' => true,
        ]);

        $response = $this->post('/api/v1/discount-codes/validate', [
            'code' => 'MIN500',
            'total_price' => 100000,
        ]);

        $response->assertStatus(200)
            ->assertJson([
                'valid' => false,
            ])
            ->assertJsonStructure(['message']);
    }

    #[Test]
    public function it_calculates_fixed_discount_correctly()
    {
        DiscountCode::create([
            'code' => 'FIXED50',
            'type' => 'fixed',
            'value' => 50000,
            'min_order_amount' => 100000,
            'is_active' => true,
        ]);

        $response = $this->post('/api/v1/discount-codes/validate', [
            'code' => 'FIXED50',
            'total_price' => 500000,
        ]);

        $response->assertStatus(200)
            ->assertJson([
                'valid' => true,
                'discount_amount' => 50000,
                'final_price' => 450000,
            ]);
    }
}