public function test_Cart_Saves_Data_To_Session()
 {
     $product = $this->getProductMock();
     $mockNS = $this->getMock('Zend_Session_Namespace');
     $mockNS->expects($this->any())->method('__set')->will($this->returnValue(true));
     $mockNS->expects($this->any())->method('__get')->will($this->returnValue(array(1 => $product)));
     $this->_model = new Storefront_Model_Cart(array('sessionNs' => $mockNS));
     $this->_model->addItem($product, 10);
     $this->assertType('array', $this->_model->getSessionNs()->items);
     $this->_model->removeItem($product);
 }