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',
      ],
    ];
  }

}