Setting and Testing Cookies in a Livewire Component

Component.php

<?php

namespace App\Livewire;

use Illuminate\Support\Facades\Cookie;
use Livewire\Component;

class MyComponent extends Component
{
    public function render()
    {
        return view('my-component');
    }
    
    public function rememberMe()
    {
        Cookie::queue(
            name: 'contactId',
            value: 'my-contact-id',
            minutes: 60 * 24 * 365,
            path: '/',
        );
    }
}

MyComponentTest.php

<?php

namespace Tests\Feature\Livewire;

use App\Livewire\MyComponent;
use App\Models\User;
use Illuminate\Support\Facades\Cookie;
use Livewire\Livewire;
use Tests\TestCase;

class MyComponentTest extends TestCase
{
    public function testComponentSetsCookie()
    {
        $user = User::factory()->create();
        
        Livewire::actingAs($user)
            ->test(MyComponent::class)
            ->call('rememberMe')
            ->assertCookie('contactId', $user->contact_id) // FAILs
            ->assertOk();
        
        // The assertCookie method exists on the testable livewire component, but always fails:
        // because we’re testing a Livewire component and not an actual request,
        // the framework doesn’t attach the queued cookie.
        
        // So instead, use Cookie::queued() to read the queued cookie, and then run assertions against that:
        $cookie = Cookie::queued(
            key: 'contactId',
            path: '/',
        );

        $this->assertEquals($user->contact_id, $cookie->getValue());
        $this->assertEquals(now()->addYear()->unix(), $cookie->getExpiresTime());
    }
}