-- Copyright (c) 2024 Huawei Technologies Co., Ltd.
-- openUBMC is licensed under Mulan PSL v2.
-- You can use this software according to the terms and conditions of the Mulan PSL v2.
-- You may obtain a copy of Mulan PSL v2 at: http://license.coscl.org.cn/MulanPSL2
-- THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
-- EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
-- MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
-- See the Mulan PSL v2 for more details.

local lu = require 'luaunit'
local bs = require 'mc.bitstring'
local ncsi_def = require 'ncsi.ncsi_protocol.ncsi_def'
local ncsi_mac = require 'ncsi.ncsi_protocol.ncsi_mac'
local ncsi_protocol_intf = require 'ncsi_protocol_intf'
local ncsi_utils = require 'ncsi.ncsi_protocol.ncsi_utils'
local ncsi_parameter = require 'ncsi.ncsi_protocol.ncsi_parameter'

-- 测试套件
TestNCSIMac = {}

-- 命令类型常量定义
local SET_MAC_ADDRESS = 0x0E
local SET_MAC_ADDRESS_RSP = 0x8E

local mac_addr_rsp_bs = bs.new([[<<
    rsp_code:16,
    reason_code:16,
    check_sum:32,
    data:22/string,
    fcs:32
>>]])

-- 模拟发送NCSI命令的函数
local function mock_send_ncsi_cmd(req_data, len, eth_name)
    TestNCSIMac.last_req_data = req_data
    TestNCSIMac.last_len = len
    TestNCSIMac.last_eth_name = eth_name
    return ncsi_def.NCSI_SUCCESS
end

-- 初始化函数，在每个测试用例前执行
function TestNCSIMac:setUp()
    ncsi_parameter.get_instance():init_ncsi_parameter()
    -- 保存原始函数
    self.original_send_ncsi_cmd = ncsi_protocol_intf.send_ncsi_cmd
    self.original_cmd_ctrl = ncsi_utils.ncsi_cmd_ctrl
    self.original_get_ncsi_parameter = ncsi_parameter.get_instance().get_ncsi_parameter

    -- 使用模拟函数替换原始函数
    ncsi_protocol_intf.send_ncsi_cmd = mock_send_ncsi_cmd

    -- 初始化测试变量
    self.last_req_data = nil
    self.last_len = nil
    self.last_eth_name = nil

    -- 模拟NCSI参数
    self.mock_ncsi_parameter = {
        current_channel = 0,
        iid = 1,  -- 添加iid字段，这是NCSI协议需要的包ID
        channel_cap = {
            [0] = {
                [1] = {
                    unicast_filter_cnt = 16,
                    mix_filter_cnt = 16
                }
            }
        }
    }
    ncsi_parameter.get_instance().get_ncsi_parameter = function() 
        return self.mock_ncsi_parameter
    end

    -- 模拟cmd_ctrl函数以便测试
    ncsi_utils.ncsi_cmd_ctrl = function(_, _, req_packet, eth_name, cmd_process_table)
        -- 确保cmd_process_table存在
        assert(cmd_process_table, "cmd_process_table is nil")

        -- 调用请求处理函数
        if req_packet and req_packet.packet_head and req_packet.packet_head.packet_type and
           cmd_process_table[req_packet.packet_head.packet_type] then
            cmd_process_table[req_packet.packet_head.packet_type](req_packet, eth_name)
        end

        -- 返回成功
        return ncsi_def.NCSI_SUCCESS
    end
end

-- 清理函数，在每个测试用例后执行
function TestNCSIMac:tearDown()
    -- 恢复原始函数
    ncsi_protocol_intf.send_ncsi_cmd = self.original_send_ncsi_cmd
    ncsi_utils.ncsi_cmd_ctrl = self.original_cmd_ctrl
    ncsi_parameter.get_instance().get_ncsi_parameter = self.original_get_ncsi_parameter
end

-- 测试设置MAC地址功能
function TestNCSIMac:test_set_mac_addr()
    -- 测试参数
    local package_id = 0
    local channel_id = 1
    local eth_name = "eth0"
    local mac_addr_param = {
        mac_addr = {0x00, 0x18, 0x82, 0x00, 0x00, 0x01},
        mac_addr_num = 1,
        addr_type = 0,
        mac_enable = 1
    }

    -- 执行测试
    local result = ncsi_mac.ncsi_set_mac_addr(eth_name, package_id, channel_id, mac_addr_param)

    -- 验证结果
    lu.assertEquals(result, ncsi_def.NCSI_SUCCESS)
    lu.assertNotNil(self.last_req_data)
    lu.assertEquals(self.last_eth_name, eth_name)
end

-- 测试设置物理MAC过滤器功能
function TestNCSIMac:test_set_phy_mac_filter()
    -- 测试参数
    local package_id = 0
    local channel_id = 1
    local eth_name = "eth0"
    local mac_num = 1

    -- 执行测试
    local result = ncsi_mac.ncsi_set_phy_mac_filter(package_id, channel_id, eth_name, mac_num)

    -- 验证结果
    lu.assertEquals(result, ncsi_def.NCSI_SUCCESS)
    lu.assertNotNil(self.last_req_data)
    lu.assertEquals(self.last_eth_name, eth_name)

    -- 测试无效的mac_num
    result = ncsi_mac.ncsi_set_phy_mac_filter(package_id, channel_id, eth_name, 20)
    lu.assertEquals(result, ncsi_def.NCSI_FAIL)
end

-- 测试响应处理
function TestNCSIMac:test_response_processing()
    -- 模拟响应包
    local function create_mock_response(rsp_code, reason_code)
        local rsp = {packet_head = {}, payload = ''}
        rsp.packet_head.payload_len_hi = 0
        rsp.packet_head.payload_len_lo = 4
        rsp.packet_head.packet_type = SET_MAC_ADDRESS_RSP
        rsp.packet_head.package_id = 0
        rsp.packet_head.channel_id = 1

        -- 创建响应payload
        local rsp_payload = {
            rsp_code = rsp_code,
            reason_code = reason_code,
            check_sum = 0,
            data = string.rep('\0', 22),
            fcs = 0
        }

        -- 使用bitstring打包数据
        rsp.payload = mac_addr_rsp_bs:pack(rsp_payload)
        return rsp
    end

    -- 测试参数
    local package_id = 0
    local channel_id = 1
    local eth_name = "eth0"
    local mac_addr_param = {
        mac_addr = {0x00, 0x18, 0x82, 0x00, 0x00, 0x01},
        mac_addr_num = 1,
        addr_type = 0,
        mac_enable = 1
    }

    -- 测试成功响应
    local success_rsp = create_mock_response(ncsi_def.CMD_COMPLETED, 0)
    
    local original_cmd_ctrl = ncsi_utils.ncsi_cmd_ctrl
    ncsi_utils.ncsi_cmd_ctrl = function(_, _, _, _, cmd_process_table)
        -- 确保cmd_process_table存在
        assert(cmd_process_table, "cmd_process_table is nil")
        assert(cmd_process_table[SET_MAC_ADDRESS_RSP], "SET_MAC_ADDRESS_RSP handler not found")
        
        -- 调用响应处理函数
        return cmd_process_table[SET_MAC_ADDRESS_RSP](success_rsp)
    end

    local result = ncsi_mac.ncsi_set_mac_addr(eth_name, package_id, channel_id, mac_addr_param)
    lu.assertEquals(result, ncsi_def.NCSI_SUCCESS)

    -- 测试失败响应
    local fail_rsp = create_mock_response(0x0123, 1)
    
    ncsi_utils.ncsi_cmd_ctrl = function(_, _, _, _, cmd_process_table)
        return cmd_process_table[SET_MAC_ADDRESS_RSP](fail_rsp)
    end

    result = ncsi_mac.ncsi_set_mac_addr(eth_name, package_id, channel_id, mac_addr_param)
    lu.assertEquals(result, ncsi_def.NCSI_FAIL)

    -- 恢复原始函数
    ncsi_utils.ncsi_cmd_ctrl = original_cmd_ctrl
end

-- 测试错误处理
function TestNCSIMac:test_error_handling()
    -- 模拟cmd_ctrl返回失败
    local original_cmd_ctrl = ncsi_utils.ncsi_cmd_ctrl
    ncsi_utils.ncsi_cmd_ctrl = function(_, _, _, _, _)
        return ncsi_def.NCSI_FAIL
    end

    -- 测试参数
    local package_id = 0
    local channel_id = 1
    local eth_name = "eth0"
    local mac_addr_param = {
        mac_addr = {0x00, 0x18, 0x82, 0x00, 0x00, 0x01},
        mac_addr_num = 1,
        addr_type = 0,
        mac_enable = 1
    }

    -- 测试设置MAC地址失败
    local result = ncsi_mac.ncsi_set_mac_addr(eth_name, package_id, channel_id, mac_addr_param)
    lu.assertEquals(result, ncsi_def.NCSI_FAIL)

    -- 测试设置物理MAC过滤器失败
    result = ncsi_mac.ncsi_set_phy_mac_filter(package_id, channel_id, eth_name, 1)
    lu.assertEquals(result, ncsi_def.NCSI_FAIL)

    -- 恢复原始函数
    ncsi_utils.ncsi_cmd_ctrl = original_cmd_ctrl
end

return TestNCSIMac