????????????????? ????????

??????????????????????????????????????Cmockery????????????????????????????????????????????????????Ч?????????????????У????????????????????????????????????????????????????????????????????

????????????????????????饗mpool.c?????????????饗dll.c??????????????????????????????????mpool_buffer_alloc??????????????????ú????????????????????dll_pop_head???????????????????dll_pop_head???????д??????????????????global_interrupt_disable??global_interrupt_enable????????????????????????dll_pop_head?????

    mpool.c
    void* mpool_buffer_alloc (mpool_handle_t _handle)
    {
        interrupt_level_t level;
        mpool_node_t *p_node;
        
        level = global_interrupt_disable ();
        if (is_invalid_handle (_handle)) {
            global_interrupt_enable (level);
            return null;
        }
        p_node = (mpool_node_t *)dll_pop_head (&_handle->free_buffer_);
        if (0 == p_node) {
            _handle->stats_nobuf_ ++;
            global_interrupt_enable (level);
            return null;
        }
        global_interrupt_enable (level);
        p_node->in_use_ = true;
        return (void *)p_node->addr_;
    }
    dll.c
    dll_node_t *dll_pop_head (dll_t *_p_dll)
    {
        dll_node_t *p_node = _p_dll->head_;
        if (p_node != 0) {
            _p_dll->count_--;
            _p_dll->head_ = p_node->next_;
            if (0 == _p_dll->head_) {
                _p_dll->tail_ = 0;
            }
            else {
                p_node->next_->prev_ = 0;
            }
            p_node->next_ = 0;
            p_node->prev_ = 0;
        }
        
        return p_node;
    }

????????????????????????????????????mpool_buffer_alloc?????????????????????????????е?handle??μ????????mpool_init?????????????????????????δ?г???

    stub_dll.c
    dll_node_t *g_p_node;
    dll_node_t *dll_pop_head (dll_t *_p_dll)
    {
        return g_p_node;
    }
    test_mpool.c
    void test_mpool_buffer_alloc ()
    {
        mpool_node_t mnode;
        // set up test environment
        mnode.addr_ = 0x5A5A5A5A;
        mnode.in_use_ = false;
        // do test
        g_p_node = &mnode.node_;
        UNITEST_EQUALS (mpool_buffer_alloc (handle)?? 0x5A5A5A5A);
        g_p_node = 0;
        UNITEST_EQUALS (mpool_buffer_alloc (handle)?? 0);
    }