public function testGetMaxId()
{
$pool = new Pool();
$repository = new ArrayRepository();
$firstPackage = $this->getPackage('foo', '1');
$secondPackage = $this->getPackage('foo1', '1');
$this->assertEquals(0, $pool->getMaxId());
$repository->addPackage($firstPackage);
$repository->addPackage($secondPackage);
$pool->addRepository($repository);
$this->assertEquals(2, $pool->getMaxId());
}