public function testDBConnection() { $this->assertTrue(is_object(self::$connection)); $this->assertTrue(self::$connection instanceof PDO); $connection = DatabaseConnection::close(); $this->assertNull($connection); }
/** * Create a PDO connection if one does not exist. * * @return void */ public static function connect() { if (is_null(self::$connection)) { self::$connection = DatabaseConnection::connect(); } }