php artisan make:test PostFeatureTest

use Tests\TestCase;

class PostFeatureTest extends TestCase
{
    public function test_homepage_can_be_accessed()
    {
        $response = $this->get('/');

        $response->assertStatus(200);
        $response->assertSee('Laravel');
    }
}

use App\Models\Post;

public function test_user_can_create_post()
{
    $data = ['title' => 'Test Post', 'content' => 'Test Content'];

    $response = $this->post('/posts', $data);

    $response->assertStatus(302); // redirect after success
    $this->assertDatabaseHas('posts', $data);
}

use Illuminate\Foundation\Testing\RefreshDatabase;

class PostFeatureTest extends TestCase
{
    use RefreshDatabase;
    // ...
}