ldc-doux/database/factories/PostFactory.php

<?php

namespace Database\Factories;

use App\Lib\Utils;
use App\Models\Post;
use Illuminate\Database\Eloquent\Factories\Factory;
use Illuminate\Support\Carbon;
use SplFileInfo;

class PostFactory extends Factory
{
    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {

        $upload = new SplFileInfo(resource_path('assets/images/burger-fond.jpg'));
        $picture = new Post();
        $imghomepath = Utils::storeImage($upload, $picture->getTable());
        $upload = new SplFileInfo(resource_path('assets/images/burger.jpg'));
        $imgnewspath = Utils::storeImage($upload, $picture->getTable());

        return [
            'title' => $this->faker->text(5),
            'text' => $this->faker->paragraph(10, false),
            'picture_home' => $imghomepath,
            'alt_text_picture_home' => $this->faker->sentence(10),
            'picture_news' => $imgnewspath,
            'alt_text_picture_news' => $this->faker->sentence(10),
            'date_start' => Carbon::now(),
            'date_end' => Carbon::now()->addDays(2),
            'on_top' => true
        ];
    }
}