Lithium Docs

						public function testMagicParamsAccess() {
		$this->assertNull($this->request->action);
		$this->assertFalse(isset($this->request->params['action']));
		$this->assertFalse(isset($this->request->action));

		$expected = $this->request->params['action'] = 'index';
		$this->assertEqual($expected, $this->request->action);
		$this->assertTrue(isset($this->request->action));
	}