19
如何解決對可測試控制器的依賴性？具有相關性的可測試控制器
工作原理：一個URI被路由到一個控制器，一個控制器可能依賴於執行某個任務。
<?php
require 'vendor/autoload.php';
/*
* Registry
* Singleton
* Tight coupling
* Testable?
*/
$request = new Example\Http\Request();
Example\Dependency\Registry::getInstance()->set('request', $request);
$controller = new Example\Controller\RegistryController();
$controller->indexAction();
/*
* Service Locator
*
* Testable? Hard!
*
*/
$request = new Example\Http\Request();
$serviceLocator = new Example\Dependency\ServiceLocator();
$serviceLocator->set('request', $request);
$controller = new Example\Controller\ServiceLocatorController($serviceLocator);
$controller->indexAction();
/*
* Poor Man
*
* Testable? Yes!
* Pain in the ass to create with many dependencies, and how do we know specifically what dependencies a controller needs
* during creation?
* A solution is the Factory, but you would still need to manually add every dependencies a specific controller needs
* etc.
*
*/
$request = new Example\Http\Request();
$controller = new Example\Controller\PoorManController($request);
$controller->indexAction();
這是我的設計模式的例子解釋
註冊地：
- 辛格爾頓
- 緊耦合
- 可測？沒有
服務定位器
- 可測？硬/否（？）
窮人迪
- 可測試
- 很難與很多依賴
註冊表來維持
<?php
namespace Example\Dependency;
class Registry
{
protected $items;
public static function getInstance()
{
static $instance = null;
if (null === $instance) {
$instance = new static();
}
return $instance;
}
public function set($name, $item)
{
$this->items[$name] = $item;
}
public function get($name)
{
return $this->items[$name];
}
}
服務定位器
<?php
namespace Example\Dependency;
class ServiceLocator
{
protected $items;
public function set($name, $item)
{
$this->items[$name] = $item;
}
public function get($name)
{
return $this->items[$name];
}
}
如何解決對可測試控制器的依賴關係？
*「很難維護很多依賴項」* .. emm ..什麼依賴關係？ –
你的控制器返回什麼？你在測試什麼？以什麼方式？ – mpm