class ConnectionTest

class ConnectionTest extends UnitTestCase {
    
    /**
     * A PDO statement prophecy.
     *
     * @var \PDOStatement|\Prophecy\Prophecy\ObjectProphecy
     */
    private $pdoStatement;
    
    /**
     * A PDO object prophecy.
     *
     * @var \PDO|\Prophecy\Prophecy\ObjectProphecy
     */
    private $pdoConnection;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->pdoStatement = $this->prophesize(\PDOStatement::class);
        $this->pdoConnection = $this->prophesize(\PDO::class);
    }
    
    /**
     * Creates a Connection object for testing.
     *
     * @return \Drupal\mysql\Driver\Database\mysql\Connection
     */
    private function createConnection() : Connection {
        $this->pdoStatement
            ->setFetchMode(Argument::any())
            ->shouldBeCalled()
            ->willReturn(TRUE);
        $this->pdoStatement
            ->execute(Argument::any())
            ->shouldBeCalled()
            ->willReturn(TRUE);
        $this->pdoConnection
            ->prepare('SELECT VERSION()', Argument::any())
            ->shouldBeCalled()
            ->willReturn($this->pdoStatement
            ->reveal());
        
        /** @var \PDO $pdo_connection */
        $pdo_connection = $this->pdoConnection
            ->reveal();
        return new class ($pdo_connection) extends Connection {
            public function __construct(\PDO $connection) {
                $this->connection = $connection;
                $this->setPrefix('');
            }

};
    }
    
    /**
     * @covers ::version
     * @covers ::isMariaDb
     * @dataProvider providerVersionAndIsMariaDb
     */
    public function testVersionAndIsMariaDb(bool $expected_is_mariadb, string $server_version, string $expected_version) : void {
        $this->pdoStatement
            ->fetchColumn(Argument::any())
            ->shouldBeCalled()
            ->willReturn($server_version);
        $connection = $this->createConnection();
        $is_mariadb = $connection->isMariaDb();
        $version = $connection->version();
        $this->assertSame($expected_is_mariadb, $is_mariadb);
        $this->assertSame($expected_version, $version);
    }
    
    /**
     * Provides test data.
     *
     * @return array
     */
    public static function providerVersionAndIsMariaDb() : array {
        return [
            // MariaDB.
[
                TRUE,
                '10.2.0-MariaDB',
                '10.2.0-MariaDB',
            ],
            [
                TRUE,
                '10.2.1-MARIADB',
                '10.2.1-MARIADB',
            ],
            [
                TRUE,
                '10.2.2-alphaX-MARIADB',
                '10.2.2-alphaX-MARIADB',
            ],
            [
                TRUE,
                '5.5.5-10.2.20-MariaDB-1:10.2.20+maria~bionic',
                '10.2.20-MariaDB-1:10.2.20+maria~bionic',
            ],
            [
                TRUE,
                '5.5.5-10.3.22-MariaDB-0+deb10u1',
                '10.3.22-MariaDB-0+deb10u1',
            ],
            [
                TRUE,
                '5.5.5-10.3.22-buzz+-MariaDB-0+deb10u1',
                '10.3.22-buzz+-MariaDB-0+deb10u1',
            ],
            // MySQL.
[
                FALSE,
                '5.5.5-10.2.20-notMariaDB',
                '5.5.5-10.2.20-notMariaDB',
            ],
            [
                FALSE,
                '5.5.5',
                '5.5.5',
            ],
            [
                FALSE,
                '5.5.5-',
                '5.5.5-',
            ],
            [
                FALSE,
                '5.7.28',
                '5.7.28',
            ],
            [
                FALSE,
                '5.7.28-31',
                '5.7.28-31',
            ],
        ];
    }

}