public function testCheckQuoteItemQty() { $this->_model->setData('manage_stock', 1); $this->_model->setData('is_in_stock', 1); $this->_model->setProductName('qwerty'); $this->_model->setData('backorders', 3); $result = $this->_model->checkQuoteItemQty(1, 1); $this->assertEquals('We don\'t have as many "qwerty" as you requested.', $result->getMessage()); }