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