Lithium Docs

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

		$result = Cache::decrement('does_not_exist', 'dec');
		$this->assertFalse($result);

		$result = Cache::write('default', 'decrement', 5, '+1 minute');
		$this->assertTrue($result);

		$result = Cache::decrement('default', 'decrement');
		$this->assertTrue($result);

		$result = Cache::read('default', 'decrement');
		$this->assertEqual(4, $result);
	}