Unit testing 在测试用例中使用事务（getDataSource）的CakePHP

在CakePHP 2.2.5中，有一个组件处理我的应用程序的付款。我可以通过浏览器/常规会话在组件内成功运行函数addPayment，但在测试用例中运行时失败

使用$this->controller->Product->getDataSource初始化事务时，我在尝试获取非对象的属性时出错；在组件内部

组件中似乎没有设置$this->controller或$this->controller->Product。有没有办法修复它，使$this->controller->Product->getDataSource；工作

应用程序/测试/案例/控制器/组件/财务组件： app/Controller/Components/FinanceComponent.php：

---

CakePHP 2.x在很多情况下都使用“延迟加载”，因此可能无法加载模型：

可能值得一看PaginatorComponent的CakePHP测试用例，并寻找示例：

您可能需要手动调用Controller:：constructClass；以便正确初始化部件和型号

App::uses('ComponentCollection', 'Controller');
App::uses('Component', 'Controller');
App::uses('FinanceComponent', 'Controller/Component');

class TestFinanceController extends Controller {
    public $uses = array('Product');
}

class FinanceComponentTest extends CakeTestCase {

    public $Finance = null;
    public $Controller = null;

/**
 * setUp method
 *
 * @return void
 */
    public function setUp() {
        parent::setUp();

        $CakeRequest = new CakeRequest();
        $CakeResponse = new CakeResponse();
        $this->Controller = new TestFinanceController($CakeRequest, $CakeResponse);

        $Collection = new ComponentCollection();
        $this->Finance = new FinanceComponent($Collection);
        $this->Finance->startup($this->Controller);
    }

/**
 * tearDown method
 *
 * @return void
 */
    public function tearDown() {
        unset($this->Finance);
        unset($this->Controller);

        parent::tearDown();
    }

/**
 * testAddPayment method
 *
 * @return void
 */
    public function testAddPayment() {
        // Get products
        $products = $this->Controller->Product->find('all', array(
            'limit' => 2,
            'offset' => rand(2,6)
        ));
        $this->assertEquals(2, count($products));

    // hidden code to shorten example...

        // Test buying from main store
        $values = array(
            // hidden code to shorten example...
        );

        $payment = call_user_func_array(array($this->Finance, 'addPayment'), array_values($values));
    }
}

class FinanceComponent extends Component {

    /**
     * Controller instance reference
     *
     * @var object
     */
    public $controller;
    public $dataSource;

    public $mainUserId = 1;
    public $mainStoreId = 1;

    /**
     * Constructor
     */
    public function __construct(ComponentCollection $collection, $settings = array()) {
        parent::__construct($collection, $settings);
        $this->controller = $collection->getController();
    }

    public function addPayment($amount, $amountTax, $userId, $products, $storeId, $transactionId = null, $affiliateUserId = null) {
        // Start Transaction
        $this->__transactionStart();

        try {
                 // hidden code to shorten example...

            // Commit Transaction
            $this->__transactionCommit();

            return array(
                'status' => 'success'
            );

        } catch (Exception $e) {
            // Rollback Transaction
            $this->__transactionRollback();

            return array(
                'status' => 'error',
                'message' => 'Error ' . $e->getLine() . ': ' . $e->getMessage()
            );
        }
    }

    protected function __transactionStart() {
        $this->dataSource = $this->controller->Product->getDataSource();
        $this->dataSource->begin();
    }

    protected function __transactionRollback() {
        $this->dataSource->rollback();
    }

    protected function __transactionCommit() {
        $this->dataSource->commit();
    }

}