BladeDirective.php

<?php

namespace App;

class BladeDirective
{
    protected $cache;
    
    public function __construct(RussianCache $cache)
    {
        $this->cache = $cache;
    }

    public function setUp($cacheKey)
    {
        
    }
}

/* Russian Cache */

ExampleTwoTest.php

<?php

use App\RussianCache;
use App\BladeDirective;
use Illuminate\Foundation\Testing\WithoutMiddleware;
use Illuminate\Foundation\Testing\DatabaseMigrations;
use Illuminate\Foundation\Testing\DatabaseTransactions;

class ExampleTwoTest extends PHPUnit_Framework_TestCase
{
    public function testItDoesSomething()
    {
        $cache = $this->prophesize('App\RussianCache');
        $directive = new BladeDirective($cache->reveal());

        $cache->has('cache-key')->shouldBeCalled();

        $directive->setUp('cache-key');
    }
}

RussianCache.php

<?php

namespace App;

class RussianCache
{
    public function has()
    {
        
    }
}