Test to verify that the custom component is able to use multiple drivers.

SmsComponentTest.php

<?php

namespace Tests\Unit;

use SMS;
use Tests\TestCase;
use App\Components\Sms\Drivers\NexmoDriver;
use App\Components\Sms\Drivers\TwilioDriver;
use App\Components\Sms\Drivers\NullDriver;
use App\Components\Sms\Contracts\SMS as SmsContract;

class SmsTest extends TestCase
{
    /** @test */
    public function component_can_be_extended_to_create_custom_drivers()
    {
        SMS::extend('foo', function ($app) {
            return new FooSmsDriver('dependency');
        });

        $fooDriver = SMS::channel('foo');

        $this->assertInstanceOf(FooSmsDriver::class, $fooDriver);
        $this->assertEquals('Sent message from custom driver', $fooDriver->send());
    }

    /** @test */
    public function component_can_use_multiple_drivers()
    {
        $nexmoDriver = SMS::channel('nexmo');

        $this->assertInstanceOf(NexmoDriver::class, $nexmoDriver);

        $twilioDriver = SMS::channel('twilio');

        $this->assertInstanceOf(TwilioDriver::class, $twilioDriver);

        $nullDriver = SMS::channel('null');

        $this->assertInstanceOf(NullDriver::class, $nullDriver);
    }
}

class FooSmsDriver implements SmsContract
{
    protected $someDependency;

    public function __construct($dependency)
    {
        $this->someDependency = $dependency;
    }

    public function send()
    {
        return 'Sent message from custom driver';
    }
}