public function it_should_be_able_to_get_total_wrapping_paper_area_from_contained_boxes(BoxInterface $box1, BoxInterface $box2)
{
$box1Area = rand(1, 500);
$box2Area = rand(1, 500);
$box1->getWrappingPaperArea()->willReturn($box1Area);
$box2->getWrappingPaperArea()->willReturn($box2Area);
$this->addBox($box1);
$this->addBox($box2);
$this->getTotalWrappingPaperArea()->shouldBe($box1Area + $box2Area);
}
function it_can_get_total_wrapping_area(BoxInterface $box1, BoxInterface $box2)
{
$boxArea1 = 78;
$boxArea2 = 15;
$box1->getWrappingPaperArea()->willReturn($boxArea1);
$box2->getWrappingPaperArea()->willReturn($boxArea2);
$this->addBox($box1);
$this->addBox($box2);
$this->getTotalWrappingArea()->shouldBe($boxArea1 + $boxArea2);
}