Unit Testing of code on frameworks?

[Skeptical]

My programmers are having trouble running unit tests on classes based on frameworks (such as CodeIgniter, PHP Cake, etc.).  Basically they're saying that there are lots of dependencies and it's all under on huge class.

 

Can you guys take a look at the following source code and let me know how this could get tested?

 

How would you test the various classes, such as:

• the "DbMySQL" class, located in system/drivers/Dbmysql.class.php
  
• the "Welcome" class, located in frame/modules/welcome/welcome.php

(btw, the code doesn't actully run, it's just for example purposes)

 

FILE: config.inc.php

 

<?php
if (!defined('BASEPATH')) exit('No direct script access allowed!');



$cfg['version'] = 0.3;
/**
* not complete just an example
*/
$cfg['site']['webmaster_name'] = 'Webmaster'; // webmaster name

/**
* core driver class that auto append to any other driver classes
*/
$cfg['drivers']['core'] = array('template' => 'tpl', 'database' => 'db');
$cfg['drivers']['basic'] = array('misc' => 'misc' , 'validata' => 'check', 'sendmail' => 'email', 'privacy' => 'prv');
/**
* program basic config settings
*/
$cfg['base']['DefaultControler'] = 'Welcome'; // Default site use controler;
$cfg['base']['DefaultMethod'] = 'index'; // Default method used in controler;

 

FILE: index.php

 

<?php


error_reporting(E_ALL);
if (PHP_VERSION < 5) exit('Need Version 5 Plus!');

function get_microtime()
{
  list($usec, $sec) = explode(" ", microtime());
  return ((float)$usec + (float)$sec);
}

$time_start = get_microtime();
// system folder where the core framework need to run
$system_folder = 'system';
// applcation folder that application locate here
$frame_folder = 'frame';
define('ROOTPATH', (function_exists('realpath') AND @realpath(dirname(__FILE__)) !== false) ? realpath(dirname(__FILE__)) . DIRECTORY_SEPARATOR : '.' . DIRECTORY_SEPARATOR);
define('BASEPATH', ROOTPATH . $system_folder . DIRECTORY_SEPARATOR);
define('APPPATH', ROOTPATH . $frame_folder . DIRECTORY_SEPARATOR);
define('TRIGGER', 'faction');
define('SITE_DOMAIN', 'tigger.com'); // site domain defined here;
define('DEBUG', 'Both'); // Both || ScreenOnly || FileOnly || None
// -------------------------
ob_start();
// turn off run-time magic quotes
set_magic_quotes_runtime(0);
// run our frame work
require_once(BASEPATH . 'base.php');

 

FILE: frame/controllers/welcome.php

 

<?php
if (!defined('BASEPATH')) exit('No direct script access allowed!');



class Welcome extends Controller
{
  /**
   * Welcome::index()
   *
   * @return
   */
  function index()
  {
      $this->welcome();
  }
  function welcome()
  {
      $this->loadmodule('welcome');
      $this->module->action();
  }
}

?>

 

FILE: frame/modules/welcome/welcome.php

 

<?php
if (!defined('BASEPATH')) exit('No direct script access allowed!');



class Welcome extends Controller
{
  /**
   * Welcome::index()
   *
   * @return
   */
  function index()
  {
      $this->welcome();
  }
  function welcome()
  {
      $this->loadmodule('welcome');
      $this->module->action();
  }
}

?>

 

FILE: system/configs/database.cfg.php

 

<?php
if (!defined('BASEPATH')) exit('No direct script access allowed!');
$cfg['_class_name'] = 'db';
$cfg['_driver'] = 'dbmysql';

$cfg['_setting'] = 'default';

$cfg['default']['hostname'] = 'localhost';
$cfg['default']['username'] = 'yourname';
$cfg['default']['password'] = 'yourpass';
$cfg['default']['database'] = 'yourdatabase';
$cfg['default']['db_debug'] = true;

 

FILE: system/drivers/Dbmysql.class.php.php

 

<?php




class DbMySQL
{
  protected $querycnt;

  /**
   * DbMySQL::__construct()
   *
   * @param mixed $cfg
   */
  function __construct($cfg = array())
  {
      $this->dbhost = $cfg['hostname'];
      $this->dbuser = $cfg['username'];
      $this->dbpass = $cfg['password'];
      $this->dbname = $cfg['database'];
      $this->_debug = $cfg['db_debug'];
      @mysql_connect($this->dbhost, $this->dbuser, $this->dbpass) OR _throw('Can not connect to MySQL server!');
      $this->selectdb();
  }

  /**
   * DbMySQL::version()
   *
   * @return
   */
  function version()
  {
      echo "<pre>/**
* MySQL
*
*/</pre>";
  }

  /**
   * DbMySQL::selectdb()
   *
   * @param mixed $dbname
   * @return null
   */
  public function selectdb($dbname = null)
  {
      @mysql_select_db($dbname == null ? $this->dbname:$dbname) OR _throw('Can not select to the database!');
  }

  /**
   * DbMySQL::query()
   *
   * @param mixed $sql
   * @return query resoucre;
   */
  public function query($query)
  {
      $this->querycnt++;
      $sql = @mysql_query($query);
      if ($sql)
      {
          return $sql;
      }
      else if ($this->_debug)
      {
          _throw('<span style="color:#FF0000;">Query Error :</span> <span style="color:#324F96;">' . htmlspecialchars($query) . '</span><br /><span style="color:#FF0000;">Error No.' . mysql_errno() . ' :</span> ' . htmlspecialchars(mysql_error()));
      }
  }
  /**
   *
   * other functions
   *
   */

}

 

FILE: system/libraries/Controller.php

 

<?php
if (!defined('BASEPATH')) exit('No direct script access allowed!');




class Controller extends Base
{
  private static $module_loaded = array();
  /**
   * Controler::__construct()
   */
  function __construct()
  {
      parent::__construct();
      $this->modules = new stdClass();
  }

  /**
   * Controler::loadmodule()
   *
   * @param string $module => module name
   * @param string $branch => controler name
   * @return void
   */
  function loadmodule($module, $branch = false)
  {
      if ($branch === false)
      {
          $ctl_name = strtolower(get_class($this));
      }
      else
      {
          $ctl_name = strtolower($branch);
      }
      $module_name = ucfirst(strtolower($module));
      if (! isset(self::$module_loaded[$ctl_name][strtolower($module)]))
      {
          if (! include_once(APPPATH . 'modules/' . $ctl_name . '/' . strtolower($module) . '.php'))
          {
              _throw("Can't load '" . $module_name . "' module, file not found!");
          }
          if (! class_exists($module_name))
          {
              _throw("Module '" . $module_name . "' is not found!");
          }
          self::$module_loaded[$ctl_name][strtolower($module)] = &new $module_name();
      }
      $this->module = self::$module_loaded[$ctl_name][strtolower($module)];
      $this->modules->$module = self::$module_loaded[$ctl_name][strtolower($module)];
  }
}

?>

 

FILE: system/libraries/Router.php

 

<?php
if (!defined('BASEPATH')) exit('No direct script access allowed!');



class Router
{
  /**
   * Router::__construct()
   *
   * init site configuration, get input direction convert to class and methods
   */
  public function __construct()
  {
      $this->faction = &_get_index();
      $this->config = _get_config('base');
      foreach(explode('.', $this->faction) as $key => $val)
      {
          if ($val != '')
          {
              $this->pieces[] = strtolower($val);
          }
      }
      $this->_set_class();
      $this->_set_method();
      $this->_output();
  }

  /**
   * Router::_output()
   * display pages
   *
   * @return void
   */
  private function _output()
  {
      $_method = &$this->_method;
      $class = &new $this->_class();
      $class->$_method();
  }

  /**
   * Router::_set_class()
   *
   * @return void
   */
  private function _set_class()
  {
      $this->_class = isset($this->pieces[0]) ? ucfirst(strtolower($this->pieces[0])):ucfirst(strtolower($this->config['DefaultControler']));
      if (! file_exists(APPPATH . 'controllers/' . strtolower($this->_class) . '.php'))
      {
          $this->_set_default_class();
      }
      else
      {
          include_once(APPPATH . 'controllers/' . strtolower($this->_class) . '.php');
          if (! class_exists($this->_class))
          {
              $this->_set_default_class();
          }
      }
  }

  /**
   * Router::_set_default_class()
   *
   * @return void
   */
  private function _set_default_class()
  {
      $this->_class = ucfirst(strtolower($this->config['DefaultControler']));
      if (file_exists(APPPATH . 'controllers/' . strtolower($this->_class) . '.php'))
      {
          include_once(APPPATH . 'controllers/' . strtolower($this->_class) . '.php');
          if (! class_exists($this->_class))
          {
              _throw('No default page class to handle');
          }
      }
      else
      {
          _throw('No default page to display!');
      }
  }

  /**
   * Router::_set_method()
   *
   * @return void
   */
  private function _set_method()
  {
      $this->_method = isset($this->pieces[1]) ? strtolower($this->pieces[1]):strtolower($this->config['DefaultMethod']);
      $class_methods = get_class_methods($this->_class);
      foreach($class_methods as $key => $val)
      {
          $class_methods[$key] = strtolower($val);
      }
      if (! in_array($this->_method, $class_methods))
      {
          $this->_method = strtolower($this->config['DefaultMethod']);
      }
      if (! in_array($this->_method, $class_methods))
      {
          $this->_set_default_class();
      }
  }
}

?>

 

 

[Jenk]

Where are your tests?

[Skeptical]

There is no testing code right now. Just wondering how one should go about unit testing this.

[Jenk]

The same way all unit tests are completed. Remember that unit tests are specific tests for individual objects, and even methods.