public function testClean() {
		$config = array('default' => array(
			'adapter' => 'Memory', 'filters' => array()
		));
		Cache::config($config);
		$result = Cache::config();
		$expected = $config;
		$this->assertEqual($expected, $result);

		$result = Cache::clean('non_existing');
		$this->assertFalse($result);

		$result = Cache::clean('default');
		$this->assertFalse($result);

	}