public function testGetLimits()
{
$limit1 = new Limit();
$limit1->setRate(25, 10, 'na');
$limit2 = new Limit();
$limit2->setRate(2, 5, 'na');
$collection = new Collection();
$collection->addLimit($limit1);
$collection->addLimit($limit2);
$limits = $collection->getLimits();
$this->assertEquals(2, sizeof($limits));
}