Tests that a request context with persistent parameters generates URLs where those parameters are properly taken into account.

Source

						public function testParameterPersistence() {
		Router::connect('/{:controller}/{:action}/{:id:[0-9]+}', array(), array(
			'persist' => array('controller', 'id')
		));

		// URLs generated with $request will now have the 'controller' and 'id'
		// parameters copied to new URLs.
		$request = Router::process(new Request(array('url' => 'posts/view/1138')));

		$params = array('action' => 'edit');
		$url = Router::match($params, $request); // Returns: '/posts/edit/1138'
		$this->assertEqual($this->request->env('base') . '/posts/edit/1138', $url);

		Router::connect(
			'/add/{:args}',
			array('controller' => 'tests', 'action' => 'add'),
			array('persist' => array('controller', 'action'))
		);
		$request = Router::process(new Request(array('url' => '/add/foo/bar', 'base' => '')));
		$path = Router::match(array('args' => array('baz', 'dib')), $request);
		$this->assertEqual('/add/baz/dib', $path);
	}