PhpBench\Registry\Registry::getService PHP Method

    public function getService($name = null)
    {
        $name = $name ?: $this->defaultService;
        if (!$name) {
            throw new \RuntimeException(sprintf('You must configure a default %s service, registered %s services: "%s"', $this->serviceType, $this->serviceType, implode('", "', array_keys($this->services))));
        }
        if (isset($this->services[$name])) {
            return $this->services[$name];
        }
        $this->assertServiceExists($name);
        $this->services[$name] = $this->container->get($this->serviceMap[$name]);
        return $this->services[$name];
    }

 /**
  * It should throw an exception if no argument given to get() and no default is defined.
  *
  * @expectedException RuntimeException
  * @expectedExceptionMessage You must configure a default test service, registered test services: "foo"
  */
 public function testDefaultGetNoDefault()
 {
     $registry = new Registry('test', $this->container->reveal());
     $registry->setService('foo', 'bar');
     $this->assertEquals($registry->getService(), 'bar');
 }