doctrine / dbal

        self::assertSame($ex, $e);

    }

    public function testDriverRequiredWithUrl()

    {

        $url = 'mysql://localhost';

        $exception = DBALException::driverRequired($url);

        self::assertInstanceOf(DBALException::class, $exception);

        self::assertSame(

            sprintf(

                "The options 'driver' or 'driverClass' are mandatory if a connection URL without scheme " .

                'is given to DriverManager::getConnection(). Given URL: %s',

                $url

            ),

            $exception->getMessage()

        );

    }

    /**

     * @group #2821

        );

    }

    public function testConversionFailedFormatPreservesPreviousException()

    {

        $previous = new \Exception();

        $exception = ConversionException::conversionFailedFormat('foo', 'bar', 'baz', $previous);

        self::assertInstanceOf('Doctrine\DBAL\Types\ConversionException', $exception);

        self::assertSame($previous, $exception->getPrevious());

    }

    /**

     * @return mixed[][]