将 phpunit/dbunit 与 SQL 服务器一起使用时出错

Question

我正在使用 phpunit/dbunit 测试 sql 服务器数据库，但它显示以下错误

1) Tests\Integration\BlocksDaoIntegrationTest::test_insert_block PHPUnit_Extensions_Database_Operation_Exception: COMPOSITE[TRUNCATE] operation failed on query: TRUNCATE TABLE DIGITAL_DOCUMENTS_IMAGES using args: Array ( ) [SQLSTATE[42000]: [Microsoft][SQL Server Native Client 11.0][SQL Server]Cannot truncate table 'DIGITAL_DOCUMENTS_IMAGES' because it is being referenced by a FOREIGN KEY constraint.]

有人可以帮我解决吗？谢谢
（抱歉我是巴西人的英语）

Answer 1

问题是 table DIGITAL_DOCUMENTS_IMAGES.
中有外键尝试替换命令

TRUNCATE TABLE DIGITAL_DOCUMENTS_IMAGES

和

DELETE FROM DIGITAL_DOCUMENTS_IMAGES

你会得到相同的结果也许这可能需要一些额外的时间，但最后你会 table 空着。

使用 TRUNCATE` 时有一些限制。您不能在 table 上使用 TRUNCATE TABLE：

被 FOREIGN KEY 约束引用。（您可以截断具有引用自身的外键的 table。）
参与索引视图。
使用事务复制或合并复制发布。

Here 你有更多关于 TRUNCATE 和 DELETE

之间区别的信息

希望对您有所帮助。

Answer 2

我已经解决了扩展 class PHPUnit_Extensions_Database_Operation_Truncate 然后返回它的问题：

操作class:

    class SQLServerTruncateOperation extends \PHPUnit_Extensions_Database_Operation_Truncate {

    private $reseed = "DECLARE @sql NVARCHAR(MAX);

        SET @sql = N'SET NOCOUNT ON;';

        ;WITH s(t) AS
         (
           SELECT 
             QUOTENAME(OBJECT_SCHEMA_NAME(referenced_object_id)) 
             + '.' + QUOTENAME(OBJECT_NAME(referenced_object_id))
          FROM sys.foreign_keys AS k
          WHERE EXISTS 
          (
            SELECT 1 FROM sys.identity_columns 
            WHERE [object_id] = k.referenced_object_id
          )
          GROUP BY referenced_object_id
        )
        SELECT @sql = @sql + N'DBCC CHECKIDENT(''' + t + ''', RESEED, 0) WITH NO_INFOMSGS;'
        FROM s;
        EXEC sp_executesql @sql;";

    public function execute(\PHPUnit_Extensions_Database_DB_IDatabaseConnection $connection, \PHPUnit_Extensions_Database_DataSet_IDataSet $dataSet) {
        $connection->getConnection()->query('EXEC sp_msforeachtable "ALTER TABLE ? NOCHECK CONSTRAINT all"');
        $connection->getConnection()->query('EXEC sp_MSForEachTable "DELETE FROM ?"');
        $connection->getConnection()->query($this->reseed);
        $connection->getConnection()->query('EXEC sp_msforeachtable "ALTER TABLE ? WITH CHECK CHECK CONSTRAINT all"');

    }
}

我的测试基地class:

 abstract class DBUnitAbstractTestCase extends \PHPUnit_Extensions_Database_TestCase{

    static private $pdo = null;

    private $conn = null;

    protected function getConnection() {
        if ($this->conn === null) {
            if (self::$pdo == null) {
                self::$pdo = new \PDO("sqlsrv:Server=server;Database=db", "user", 'password');
            }
            $this->conn = $this->createDefaultDBConnection(self::$pdo, 'database');
        }

        return $this->conn;
    }

    public function getSetUpOperation() {
        $cascadeTruncates = TRUE; 
        return new \PHPUnit_Extensions_Database_Operation_Composite(array(
            new SQLServerTruncateOperation($cascadeTruncates),
            \PHPUnit_Extensions_Database_Operation_Factory::INSERT()
        ));
    }
}

将 phpunit/dbunit 与 SQL 服务器一起使用时出错

Error when using phpunit/dbunit with SQL Server

php

sql-server

testing

phpunit

dbunit