Stiphle\Storage\Redis::unlock PHP Method

    public function unlock($key)
    {
        $this->redisClient->del($this->getLockKey($key));
    }

 public function testStorageCanBeUnlocked()
 {
     $redisClient = $this->getMockBuilder(\Predis\Client::class)->setMethods(['del'])->getMock();
     $redisClient->expects($this->once())->method('del')->with('dave::LOCK');
     $storage = new Redis($redisClient);
     $storage->unlock('dave');
 }