yii2/tests/unit/framework/rbac/DbManagerTestCase.php

<?php
namespace yiiunit\framework\rbac;

use yii\console\Application;
use yii\console\controllers\MigrateController;
use yii\db\Connection;
use yii\rbac\DbManager;

/**
 * DbManagerTestCase
 */
abstract class DbManagerTestCase extends ManagerTestCase
{
    protected $database;
    protected $driverName = 'mysql';

    /**
     * @var Connection
     */
    protected $db;

    protected function getMigrator()
    {
        $app = new Application([
            'id' => 'Migrator',
            'basePath' => '@yiiunit',
            'components' => [
                'db' => $this->getConnection(),
            ],
        ]);

        $migrator = new MigrateController('migrate', $app, []);
        $migrator->migrationPath = '@yii/rbac/migrations/';
        $migrator->interactive = false;
        return $migrator;
    }

    protected function setUp()
    {
        parent::setUp();
        $databases = $this->getParam('databases');
        $this->database = $databases[$this->driverName];
        $pdo_database = 'pdo_'.$this->driverName;

        if (!extension_loaded('pdo') || !extension_loaded($pdo_database)) {
            $this->markTestSkipped('pdo and '.$pdo_database.' extension are required.');
        }

        $this->auth = new DbManager(['db' => $this->getConnection()]);
        $this->getMigrator()->run('up');
    }

    protected function tearDown()
    {
        parent::tearDown();
        $this->getMigrator()->run('down');
        if ($this->db) {
            $this->db->close();
        }
        $this->destroyApplication();
    }

    /**
     * @param  boolean $reset whether to clean up the test database
     * @param  boolean $open whether to open and populate test database
     * @throws \yii\base\InvalidParamException
     * @throws \yii\db\Exception
     * @throws \yii\base\InvalidConfigException
     * @return \yii\db\Connection
     */
    public function getConnection($reset = true, $open = true)
    {
        if (!$reset && $this->db) {
            return $this->db;
        }
        $db = new Connection;
        $db->dsn = $this->database['dsn'];
        if (isset($this->database['username'])) {
            $db->username = $this->database['username'];
            $db->password = $this->database['password'];
        }
        if (isset($this->database['attributes'])) {
            $db->attributes = $this->database['attributes'];
        }
        if ($open) {
            $db->open();
        }
        $this->db = $db;

        return $db;
    }
}