public function testAddToBasketMultiple() { $basket = new dwmsw\sagepay\Basket(); $basket->addItem(new dwmsw\sagepay\Item('Test Item', 30.0, 6, 1)); $basket->addItem(new dwmsw\sagepay\Item('Test Item', 30.0, 6, 2)); $amount = $basket->getAmount(); $this->assertEquals($amount, 108); }