/**
* @covers Group_Shipping_Items::existing_shipping_items
*/
public function test_existing_shipping_items()
{
$method = Jam::build('shipping_method');
$purchase_items = array(Jam::build('purchase_item'));
$items = array(Jam::build('shipping_item'));
$shipping = $this->getMock('Model_Brand_Purchase_Shipping', array('items_from'), array('brand_purchase_shipping'));
$shipping->expects($this->once())->method('items_from')->with($this->identicalTo($purchase_items))->will($this->returnValue($items));
$group_items = new Group_Shipping_Items($shipping, $purchase_items, $method);
$result = $group_items->existing_shipping_items();
$this->assertSame($items, $result);
$result = $group_items->existing_shipping_items();
$this->assertSame($items, $result);
}
