Jenner\SimpleFork\Lock\Semaphore::create PHP Method

    public static function create($key)
    {
        return new Semaphore($key);
    }

 public function testCommunication()
 {
     if (version_compare(PHP_VERSION, '5.6.0') < 0) {
         $this->markTestSkipped("php version is too low");
     }
     $process = new \Jenner\SimpleFork\Process(function () {
         $lock = \Jenner\SimpleFork\Lock\Semaphore::create('test');
         $lock->acquire(false);
         sleep(5);
         $lock->release();
     });
     $process->start();
     sleep(3);
     $lock = \Jenner\SimpleFork\Lock\Semaphore::create("test");
     $this->assertFalse($lock->acquire(false));
     $process->wait();
     $this->assertTrue($lock->acquire(false));
     $this->assertTrue($lock->release());
 }