symfony - 使用 Symfony2 进行功能测试时如何回滚事务

Question

我正尝试在 Symfony2 中为我的项目编写功能测试。我想测试用户是否可以访问页面、填写表格并提交。我试图找到一种方法将数据库回滚到测试前的状态。我在 https://gist.github.com/Vp3n/5472509 找到了一个我稍微修改过的辅助类它扩展了 WebTestCase 并重载了 setUp 和 tearDown 方法。以下是我为使其正常工作所做的修改:

 /**
 * Before each test we start a new transaction
 * everything done in the test will be canceled ensuring isolation et speed
 */
protected function setUp()
{
    parent::setUp();
    $this->client = $this->createClient();
    $this->em = static::$kernel->getContainer()
        ->get('doctrine')
        ->getManager();
    $this->em->getConnection()->beginTransaction();
    $this->em->getConnection()->setAutoCommit(false);
}
/**
 * After each test, a rollback reset the state of 
 * the database
 */
protected function tearDown()
{
    parent::tearDown();
    if($this->em->getConnection()->isTransactionActive()){
        echo 'existing transactions';
        $this->em->getConnection()->rollback();
        $this->em->close();
    }
}

当我运行测试时，它会确认现有事务，但回滚失败并保留修改。

测试日志:

Runtime:       PHP 5.6.15

.existing transactions.      2/2 (100%)existing transactions                                                                                      

Time: 5.47 seconds, Memory: 24.50MB

OK (2 tests, 5 assertions)

我做错了什么？这甚至是最佳做法吗？

编辑

这对我有用:

abstract class DatabaseWebTest extends WebTestCase {
    /**
     * helper to acccess EntityManager
     */
    protected $em;
    /**
     * Helper to access test Client
     */
    protected $client;
    /**
     * Before each test we start a new transaction
     * everything done in the test will be canceled ensuring isolation et speed
     */
    protected function setUp()
    {
        parent::setUp();
        
        $this->client = $this->createClient(['environment' => 'test'], array(
            'PHP_AUTH_USER' => 'user',
            'PHP_AUTH_PW'   => 'password',
            ));
        $this->client->disableReboot();
        $this->em = $this->client->getContainer()->get('doctrine.orm.entity_manager');        
        $this->em->beginTransaction();
        $this->em->getConnection()->setAutoCommit(false);
    }
    /**
     * After each test, a rollback reset the state of 
     * the database
     */
    protected function tearDown()
    {
        parent::tearDown();

        if($this->em->getConnection()->isTransactionActive()) {
            $this->em->rollback();
        }        
    }
}

Answer 1

您是否对 Client 执行了多个请求？如果是这样，您的问题可能是客户端在执行一个请求后关闭了内核。但是你可以使用 $this->client->disableReboot() 禁用它所以这个片段片段应该是幂等的:

public function setUp()
{
    $this->client = $this->createClient(['environment' => 'test']);
    $this->client->disableReboot();
    $this->em = $this->client->getContainer()->get('doctrine.orm.entity_manager');
    $this->em->beginTransaction();
}

public function tearDown()
{
    $this->em->rollback();
}

public function testCreateNewEntity()
{
    $this->client->request('GET', '/create/entity/form');
    $this->client->request('POST', '/create/entity/unique/123');
}