MockingMailTest.php

<?php
use Phake as p;

class MockingMailTest extends \TestCase
{
    function test_it_should_send_mail()
    {
        // Mocking Laravel Mail
        $mockedMail = p::mock('Illuminate\Mail\Mailer');
        $this->app->instance('mailer', $mockedMail);
        
        // Lakukan proses tertentu
        // Di dalam proses ini, aplikasi seharusnya mengirim email menggunakan Mail
        
        // Memastikan bahwa email dikirim menggunakan:
        // Template email.suatuTemplate
        // Dengan template konent berupa ['content'=>'Suatu Konten']
        p::verify($mockedMail, p::times(1))->send('email.suatuTemplate', ['content'=>'Suatu Konten'], $this->isInstanceOf('Closure'));
    }
}

SuatuProsesYangMengirimMail.php

<?php

namespace Suatu\Namespace;

class SuatuProsesYangMengirimMail
{
    public function send($receiverEmail, $receiverName, $content, $template)
    {
        \Mail::send($template, $content, function($message) use ($receiverEmail, $receiverName) {
            // proses mengirimm mail
        });
    }
}