Way to use sql lite for symfony tests with isolation and fixtures loading

Given the following phpunit-bootstrap.php file that i use as bootstrap in php unit:

<?php

require_once __DIR__ . '/../vendor/autoload.php';
require_once __DIR__ . '/../app/AppKernel.php';

use Symfony\Bundle\FrameworkBundle\Console\Application;
use Symfony\Component\Console\Output\ConsoleOutput;
use Symfony\Component\Console\Input\ArrayInput;

use Doctrine\Bundle\DoctrineBundle\Command\DropDatabaseDoctrineCommand;
use Doctrine\Bundle\DoctrineBundle\Command\CreateDatabaseDoctrineCommand;
use Doctrine\Bundle\DoctrineBundle\Command\Proxy\CreateSchemaDoctrineCommand;

$kernel = new AppKernel('test', true); // create a "test" kernel
$kernel->boot();

$application = new Application($kernel);

// add the database:drop command to the application and run it
$command = new DropDatabaseDoctrineCommand();
$application->add($command);
$input = new ArrayInput(array(
    'command' => 'doctrine:database:drop',
    '--force' => true,
));
$command->run($input, new ConsoleOutput());

// add the database:create command to the application and run it
$command = new CreateDatabaseDoctrineCommand();
$application->add($command);
$input = new ArrayInput(array(
    'command' => 'doctrine:database:create',
));
$command->run($input, new ConsoleOutput());

// add the schema:create command to the application and run it
$command = new CreateSchemaDoctrineCommand();
$application->add($command);
$input = new ArrayInput(array(
    'command' => 'doctrine:schema:create',
));
$command->run($input, new ConsoleOutput());

It comes from Matias Noback blog. This is my config_test.yml configuration:

doctrine:
    dbal:
        default_connection: default
        connections:
            default:
                driver:   pdo_sqlite
                memory:   true

When i call first test loading fixtures it says me like the database have not the table in his schema.

But if I switch to mysql pdo driver counterpart, the complain vaporizes.

The error I get is:

SQLSTATE[HY000]: General error: 1 no such table: usr_user_role

Just like the table has not been created. But the console outputs to me:

Dropped database for connection named "mydatabase"
Created database "mydatabase" for connection named default
ATTENTION: This operation should not be executed in a production environment.

Creating database schema...
Database schema created successfully!
PHPUnit 5.7.2 by Sebastian Bergmann and contributors.