Initialize test by creating a new object instance with a default context.

Source

						public function setUp() {
		$this->_routes = Router::get();
		Router::reset();
		Router::connect('/{:controller}/{:action}/{:id}.{:type}', array('id' => null));
		Router::connect('/{:controller}/{:action}/{:args}');

		$request = new Request();
		$request->params = array('controller' => 'posts', 'action' => 'index');
		$request->persist = array('controller');

		$this->context = new MockFormRenderer(compact('request'));
		$this->form = new Form(array('context' => $this->context));

		$this->base = $this->context->request()->env('base') . '/';
	}