lithium\tests\cases\storage\CacheTest::testCacheWriteAndReadNull PHP Method

    public function testCacheWriteAndReadNull()
    {
        Cache::config(array('default' => array('adapter' => 'Memory')));
        $result = Cache::write('default', 'some_key', null);
        $this->assertTrue($result);
        $result = Cache::read('default', 'some_key');
        $this->assertNull($result);
    }