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Merge pull request 'feature/route' (#1) from feature/route into main

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7iwind
2026-07-26 01:47:42 +08:00
parent 1a54aed0ee c3af3ae4e2
commit 7f537108b5
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.idea/misc.xml
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<option name="pythonIntegrationState" value="YES" /> <option name="pythonIntegrationState" value="YES" />
</component> </component>
<component name="CMakeWorkspace" PROJECT_DIR="$PROJECT_DIR$" /> <component name="CMakeWorkspace" PROJECT_DIR="$PROJECT_DIR$" />
<component name="WestSettings"><![CDATA[{}]]></component>
</project> </project>
CMakeLists.txt
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cmake_minimum_required(VERSION 4.3) cmake_minimum_required(VERSION 3.10)
project(DataRouter C) project(DataRouter C)
set(CMAKE_C_STANDARD 11) set(CMAKE_C_STANDARD 11)
add_library(DataRouter STATIC library.c) add_library(DataRouter STATIC datarouter.c)
target_include_directories(DataRouter PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
if(BUILD_EXAMPLES OR NOT DEFINED BUILD_EXAMPLES)
add_executable(example example.c)
target_link_libraries(example DataRouter)
endif()
if(BUILD_TESTING OR NOT DEFINED BUILD_TESTING)
enable_testing()
add_executable(test_datarouter tests/test_datarouter.c)
target_link_libraries(test_datarouter DataRouter)
add_test(NAME datarouter COMMAND test_datarouter)
endif()
DESIGN.md
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# DataRouter 详细设计文档
## 1. 设计目标
轻量级 C 语言数据路由库。核心思想：
- **报文类型（Channel）**：编译期通过宏声明的数据类型（如 `sensor` / `status` / `control`）
- **端口（Port）**：运行期创建的连接点，绑定一个报文类型 + 一个物理外设发送 handler
- **路由（Routing）**：将逻辑报文类型连接到实际的物理外设发送函数
```
应用层 send_sensor(port, data)
│
▼
库校验端口
│
▼
调用注册的 handler(data) ← 用户实现：UART / TCP / CAN / 文件发送
│
▼
物理外设
```
### 设计原则
| 原则 | 说明 |
|------|------|
| 编译期确定类型 | 所有报文类型在 `datarouter_config.h` 中声明，库自动生成代码 |
| 运行期绑定外设 | 端口创建后，用户注册具体的发送 handler（函数指针） |
| 不关心物理外设 | 库不依赖任何外设 API，只调用用户提供的 handler |
| 零动态内存 | 纯静态数组，无 malloc/free |
---
## 2. 整体架构
### 2.1 模块依赖
```plantuml
@startuml
left to right direction
rectangle "用户代码" as User {
component "应用逻辑\n调用 datarouter_send_<type>()" as App
component "datarouter_config.h\n声明报文类型" as Cfg
component "外设 handler\nUART / TCP / CAN / 文件" as Handlers
component "接收回调\n处理收到的报文" as Callbacks
}
database "DataRouter 库" as Lib {
component "datarouter.h\n公共 API + 代码生成" as Hdr
component "datarouter.c\n端口表 + handler 调用" as Impl
}
App --> Hdr
Cfg --> Hdr
Impl --> Cfg
Handlers --> Impl : 注册为 send_handler
Callbacks --> Impl : 实现 on_recv_<type>
@enduml
```
### 2.2 文件结构
| 文件 | 职责 |
|------|------|
| `datarouter_config.h` | 用户在此声明所有报文类型 |
| `datarouter.h` | 公共 API + X-macro 展开（enum + 发送函数声明 + 回调声明） |
| `datarouter.c` | 发送函数实现 + handler 调用 + 端口管理 |
| `example.c` | 使用示例 |
| `tests/test_datarouter.c` | 31 个单元测试 |
---
## 3. 核心概念
### 3.1 报文类型（Channel）
```plantuml
@startuml
object "DATAROUTER_CHANNEL(sensor, \"Sensor data\")" as C1
object "DATAROUTER_CHANNEL(status, \"Status report\")" as C2
object "DATAROUTER_CHANNEL(control, \"Control command\")" as C3
note right of C1
编译期展开产物：
· DATAROUTER_CHANNEL_sensor = 0
· int datarouter_send_sensor(port, data, len)
· void datarouter_on_recv_sensor(port, data, len)
· channel_names[0] = "sensor"
· channel_descs[0] = "Sensor data"
end note
C1 --> C2
C2 --> C3
@enduml
```
### 3.2 端口与 handler
```plantuml
@startuml
skinparam objectBorderColor black
object "端口 A" as PA {
type = sensor
handler = uart_send
}
object "端口 B" as PB {
type = sensor
handler = tcp_send
}
object "端口 C" as PC {
type = status
handler = uart_send
}
object "UART发送函数" as UART
object "TCP发送函数" as TCP
PA --> UART : 注册
PB --> TCP : 注册
PC --> UART : 注册
note right of PA
同一报文类型 sensor
可路由到不同外设
end note
note right of PC
不同报文类型 status
可复用同一外设 UART
end note
@enduml
```
---
## 4. X-macro 代码生成
### 4.1 展开流程
```plantuml
@startuml
== datarouter.h: 3 次展开 ==
-> datarouter_config.h: #include 获得 DATAROUTER_CHANNELS
datarouter.h -> "第 1 遍": #define DATAROUTER_CHANNEL(id,desc) DATAROUTER_CHANNEL_##id,
note right: 生成 enum 通道枚举
datarouter.h -> "第 2 遍": #define DATAROUTER_CHANNEL(id,desc) int datarouter_send_##id(...);
note right: 生成发送触发函数声明
datarouter.h -> "第 3 遍": #define DATAROUTER_CHANNEL(id,desc) void datarouter_on_recv_##id(...);
note right: 生成接收回调声明
== datarouter.c: 3 次展开 ==
datarouter.c -> "第 4 遍": #define DATAROUTER_CHANNEL(id,desc) DATAROUTER_WEAK void ...
note right: 弱符号回调默认空实现
datarouter.c -> "第 5 遍": #define DATAROUTER_CHANNEL(id,desc) int datarouter_send_##id(…) {…}
note right: 发送函数实现 → 调用handler
datarouter.c -> "第 6 遍": #define DATAROUTER_CHANNEL(id,desc) #id, → channel_names[]
datarouter.c -> "第 7 遍": #define DATAROUTER_CHANNEL(id,desc) desc, → channel_descs[]
@enduml
```
### 4.2 展开示例（3 个通道）
```
用户配置:
DATAROUTER_CHANNEL(sensor, "Sensor data")
DATAROUTER_CHANNEL(status, "Status report")
DATAROUTER_CHANNEL(control, "Control command")
展开产物:
enum: sensor = 0, status = 1, control = 2, CHANNEL_COUNT = 3
发送: int datarouter_send_sensor(uint32_t, const void*, size_t);
int datarouter_send_status(…);
int datarouter_send_control(…);
回调: void datarouter_on_recv_sensor(uint32_t, const void*, size_t);
void datarouter_on_recv_status(…);
void datarouter_on_recv_control(…);
元数据: names[] = {"sensor", "status", "control"}
descs[] = {"Sensor data", "Status report", "Control command"}
```
---
## 5. 数据结构
### 5.1 核心数据类型
```plantuml
@startuml
skinparam classAttributeIconSize 0
class "datarouter_channel (enum)" as Chan {
+ DATAROUTER_CHANNEL_sensor = 0
+ DATAROUTER_CHANNEL_status = 1
+ DATAROUTER_CHANNEL_control = 2
+ DATAROUTER_CHANNEL_COUNT = 3
}
class "datarouter_send_handler_t" as Handler {
+ void (*)(uint32_t port_id, const void *data, size_t len)
}
class "端口表" as Table {
- port_entry_t ports[64]
- uint8_t initialized
}
class "port_entry_t" as Entry {
- int type
- datarouter_send_handler_t handler
- uint8_t in_use
}
class "发送函数" as Send {
+ int send_sensor(port, data, len)
+ int send_status(port, data, len)
+ int send_control(port, data, len)
}
class "接收回调" as Recv {
+ void on_recv_sensor(port, data, len) ← 用户实现
+ void on_recv_status(port, data, len)
+ void on_recv_control(port, data, len)
}
Entry --> Chan : type ∈ enum
Entry --> Handler : handler 函数指针
Table --> Entry : ports[]
Send --> Table : 校验端口 + 调用 handler
Recv --> Send : 被用户从外设收数据时调用
@enduml
```
### 5.2 `port_entry_t`
```c
typedef struct {
int type; // 报文类型（DATAROUTER_CHANNEL_xxx / -1）
datarouter_send_handler_t handler; // 外设发送函数（NULL 表示未注册）
uint8_t in_use; // 1=已分配，0=空闲
} port_entry_t;
```
### 5.3 端口表
```c
#define DATAROUTER_MAX_PORTS 64 // 可由 -D 覆盖
static port_entry_t ports[64]; // 静态数组，无动态内存
static uint8_t initialized; // init/reset 标志
```
---
## 6. API 参考
### 6.1 初始化
```c
void datarouter_init(void); // 幂等初始化
void datarouter_reset(void); // 重置所有状态（测试隔离/热重启）
```
### 6.2 端口管理
```c
datarouter_port_t datarouter_port_create(void); // 返回端口 ID 或 -1
void datarouter_port_delete(port); // 删除端口，ID 可复用
void datarouter_port_set_type(port, channel_id); // 指定报文类型
int datarouter_port_get_type(port); // 获取报文类型，-1 表示无
void datarouter_port_set_handler(port, handler); // 注册外设发送 handler
datarouter_send_handler_t datarouter_port_get_handler(port); // 获取 handler
```
### 6.3 发送触发函数（每通道 1 个，X-macro 生成）
```c
int datarouter_send_sensor(uint32_t port_id, const void *data, size_t len);
int datarouter_send_status(uint32_t port_id, const void *data, size_t len);
int datarouter_send_control(uint32_t port_id, const void *data, size_t len);
```
返回值：
| 值 | 含义 |
|:--:|------|
| 0 | 成功，handler 已被调用 |
| -1 | 库未初始化 |
| -2 | 端口无效或已删除 |
| -3 | 端口类型与触发的报文类型不匹配 |
| -4 | 端口未注册外设发送 handler |
### 6.4 接收回调声明（每通道 1 个，用户实现）
```c
void datarouter_on_recv_sensor(uint32_t port_id, const void *data, size_t len);
void datarouter_on_recv_status(uint32_t port_id, const void *data, size_t len);
void datarouter_on_recv_control(uint32_t port_id, const void *data, size_t len);
```
库提供弱符号默认空实现，用户定义同名函数即可覆盖。
### 6.5 元数据查询
```c
int datarouter_channel_count(void);
const char *datarouter_channel_name(int channel_id);
const char *datarouter_channel_desc(int channel_id);
```
---
## 7. 核心流程
### 7.1 发送流程
```plantuml
@startuml
actor "应用" as App
participant "datarouter_send_sensor()" as Send
participant "端口表" as Table
participant "handler" as Handler
participant "外设" as Dev
App -> Send : send_sensor(port=2, data, len)
group 校验
Send -> Send : initialized?
alt 未初始化
Send --> App : return -1
end
Send -> Table : ports[2].in_use?
alt 端口无效
Send --> App : return -2
end
Send -> Table : ports[2].type == sensor?
alt 类型不匹配
Send --> App : return -3
end
Send -> Table : ports[2].handler != NULL?
alt 无 handler
Send --> App : return -4
end
end
Send -> Handler : handler(2, data, len)
Handler -> Dev : UART_SendData(data, len)
Handler --> Send : void
Send --> App : return 0
@enduml
```
### 7.2 接收流程
```plantuml
@startuml
actor "外设" as Dev
participant "用户分发代码" as Dispatch
participant "datarouter_on_recv_sensor()" as Callback
participant "用户处理逻辑" as Process
Dev -> Dispatch : 收到数据，识别为 sensor 类型
Dispatch -> Callback : on_recv_sensor(port_id, data, len)
Callback -> Process : 解析数据、更新状态等
Process --> Callback : void
Callback --> Dispatch : void
@enduml
```
### 7.3 端口生命周期
```plantuml
@startuml
state "空闲\nin_use=0" as Idle
state "已创建\nin_use=1\ntype=-1\nhandler=NULL" as Created
state "已配置\nin_use=1\ntype=sensor\nhandler=..." as Config
[*] --> Idle : datarouter_reset()
Idle --> Created : datarouter_port_create()
Created --> Config : set_type + set_handler
Config --> Config : set_type / set_handler\n可任意切换
Config --> Created : set_type(-1) / set_handler(NULL)\n清除能力
Created --> Idle : datarouter_port_delete()
Config --> Idle : datarouter_port_delete()
Idle --> Created : 复用 ID
@enduml
```
---
## 8. 路由示例
### 场景：传感器数据同时路由到 UART 和 TCP
```
应用
│
├─ send_sensor(sensor_uart_port, data, len)
│ │
│ ▼
│ handler = uart_send → UART 外设
│
└─ send_sensor(sensor_tcp_port, data, len)
│
▼
handler = tcp_send → TCP 外设
```
### 场景：运行时切换路由
```
端口 sensor_tcp 原 handler = tcp_send
datarouter_port_set_handler(sensor_tcp, file_send);
端口 sensor_tcp 现 handler = file_send → 改为写入文件
```
---
## 9. 弱符号机制
```plantuml
@startuml
package "libDataRouter.a" {
component "弱符号\nvoid on_recv_sensor(...){}" as Weak
}
package "用户代码" {
component "强符号\nvoid on_recv_sensor(...){...}" as Strong
}
package "最终链接产物" {
component "使用用户版本" as Result
}
Strong --> Result
Weak ..> Result : 后备
@enduml
```
- 库为每个回调提供 `__attribute__((weak))` 空实现
- 用户定义同名函数自动覆盖
- 未定义的回调在调用时静默空转
---
## 10. 错误码体系
| 返回值 | 含义 |
|:------:|------|
| 0 | 成功 |
| -1 | 库未初始化 |
| -2 | 端口无效（越界/未创建/已删除） |
| -3 | 端口类型不匹配 |
| -4 | 端口未注册发送 handler |
---
## 11. 配置扩展
### 增加报文类型
编辑 `datarouter_config.h`：
```c
#define DATAROUTER_CHANNELS \
DATAROUTER_CHANNEL(sensor, "Sensor data") \
DATAROUTER_CHANNEL(status, "Status report") \
DATAROUTER_CHANNEL(control, "Control command") \
DATAROUTER_CHANNEL(debug, "Debug message") /* 新增 */
```
重新编译后自动生成：枚举、发送函数、回调声明、元数据数组。
### 修改最大端口数
```bash
cmake -DCMAKE_C_FLAGS="-DDATAROUTER_MAX_PORTS=128" ...
```
---
## 12. 约束
| 约束 | 说明 |
|------|------|
| 报文类型 | 编译期固定，修改需重新编译 |
| 最大端口数 | 默认 64，可由 `-D` 覆盖 |
| 线程安全 | 不支持（无锁），多线程需外部加锁 |
| 弱符号 | GCC/Clang 原生支持 |
| 内存分配 | 纯静态，无 malloc/free |
README.md
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# DataRouter # DataRouter
轻量级 C 语言数据路由库。编译期声明报文类型，运行期将端口绑定到物理外设发送函数，实现一对多广播路由。
## 概念
| 术语 | 说明 |
|------|------|
| **通道 (Channel)** | 编译期声明的报文类型（如 `sensor` / `status` / `control`） |
| **端口 (Port)** | 运行期创建的连接点，绑定一个报文类型和 N 个外设发送 handler |
| **路由** | 将报文类型连接到物理外设发送函数的过程 |
| **Handler** | 用户实现的物理外设发送函数，一个端口可注册多个（默认上限 4） |
## 快速开始
### 1. 声明报文类型
编辑 `datarouter_config.h`：
```c
#define DATAROUTER_CHANNELS \
DATAROUTER_CHANNEL(sensor, "Sensor data") \
DATAROUTER_CHANNEL(status, "Status report") \
DATAROUTER_CHANNEL(control, "Control command")
```
### 2. 实现外设发送 handler
```c
static void uart_send(uint32_t port_id, const void *data, size_t len) {
/* 调用具体外设 API 发送数据 */
HAL_UART_Transmit(&huart1, data, len, 1000);
}
static void tcp_send(uint32_t port_id, const void *data, size_t len) {
send(tcp_socket, data, len, 0);
}
```
### 3. 创建端口并注册 handler
```c
datarouter_init();
datarouter_port_t p = datarouter_port_create();
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
/* 一个端口同时路由到两个外设 */
datarouter_port_add_handler(p, uart_send);
datarouter_port_add_handler(p, tcp_send);
/* 发送 → 同时走 UART 和 TCP */
datarouter_send_sensor(p, "temperature:25.3", 16);
```
### 4. 实现接收回调
```c
void datarouter_on_recv_sensor(uint32_t port_id, const void *data, size_t len) {
printf("received sensor data: %.*s\n", (int)len, (const char *)data);
}
```
## API 一览
### 初始化
```c
void datarouter_init(void); // 初始化（幂等）
void datarouter_reset(void); // 重置全部状态
```
### 端口管理
```c
datarouter_port_t datarouter_port_create(void); // 创建端口
void datarouter_port_delete(datarouter_port_t port); // 删除端口
void datarouter_port_set_type(port, int channel_id); // 设置报文类型
int datarouter_port_get_type(port); // 获取报文类型
int datarouter_port_add_handler(port, handler); // 注册外设 handler
int datarouter_port_remove_handler(port, handler); // 移除 handler
void datarouter_port_clear_handlers(port); // 清除全部 handler
int datarouter_port_handler_count(port); // handler 数量
```
### 发送触发（每通道一个，X-macro 自动生成）
```c
int datarouter_send_sensor(port, data, len); // 返回值：0 成功 / -1 未初始化
int datarouter_send_status(port, data, len); // -2 端口无效
int datarouter_send_control(port, data, len); // -3 类型不匹配
// -4 无 handler
```
### 接收回调（每通道一个，用户实现）
```c
void datarouter_on_recv_sensor(uint32_t port_id, const void *data, size_t len);
void datarouter_on_recv_status(uint32_t port_id, const void *data, size_t len);
void datarouter_on_recv_control(uint32_t port_id, const void *data, size_t len);
```
库提供弱符号默认空实现，用户定义同名函数即可覆盖。
### 通道元数据
```c
int datarouter_channel_count(void);
const char *datarouter_channel_name(int channel_id);
const char *datarouter_channel_desc(int channel_id);
```
## 路由模型
```
send_sensor(port, data, len)
│
├─→ handler[0] = uart_send → UART 外设
├─→ handler[1] = tcp_send → TCP 外设
└─→ handler[2] = can_send → CAN 外设
```
- 一个端口可注册多个 handler（一对多广播）
- 同一 handler 可注册到多个端口（多路复用）
- 运行时通过 `add_handler` / `remove_handler` 动态改变路由
- 清空 handler 后发送返回 -4
## 编译
```bash
cmake -S . -B build
cmake --build build
```
可选配置项：
```bash
cmake -DCMAKE_C_FLAGS="-DDATAROUTER_MAX_PORTS=128 -DDATAROUTER_MAX_HANDLERS_PER_PORT=8"
```
## 测试
```bash
cmake --build build
ctest --test-dir build
# 或直接运行
./build/test_datarouter
```
当前 36 个测试用例，覆盖端口管理、类型、handler 增删、一对多广播、接收回调、错误边界。
## 文件结构
```
datarouter_config.h 报文类型配置（用户编辑）
datarouter.h 公共 API + X-macro 展开
datarouter.c 实现（端口表 + handler 调用）
example.c 使用示例
tests/test_datarouter.c 单元测试
DESIGN.md 详细设计文档
TEST_CASES.md 测试用例文档
```
## 依赖
- C11 编译器
- CMake ≥ 3.10
- 无第三方库依赖
TEST_CASES.md
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# DataRouter 单元测试用例文档
## 测试环境
| 项目 | 内容 |
|------|------|
| 语言标准 | C11 |
| 编译器 | GCC 11.4.0 |
| 测试框架 | 自定义轻量框架（宏 + goto cleanup） |
| 构建系统 | CMake ≥ 3.10 |
| 报文类型 | `sensor` / `status` / `control` 三个通道 |
## 运行方式
```bash
cmake -S . -B build
cmake --build build
ctest --test-dir build
# 或直接运行:
./build/test_datarouter
```
## 测试用例列表
### 1. 未初始化（1 个）
| # | 测试名 | 描述 | 步骤 | 预期 |
|---|--------|------|------|------|
| 1 | `error_uninit` | 未初始化时不能发送 | ① 不调 init 直接 `send_sensor(0, ...)` | 返回 -1 |
### 2. 端口管理（7 个）
| # | 测试名 | 描述 | 步骤 | 预期 |
|---|--------|------|------|------|
| 3 | `port_create_basic` | 基本创建 | ① `datarouter_port_create()` | 返回 ≥ 0 |
| 4 | `port_create_multiple` | 多端口唯一 ID | ① 连续创建 3 个端口 | ID 互不相同 |
| 5 | `port_create_reuse` | 删除后 ID 复用 | ① 创建 A ② 删除 A ③ 再创建 | 新 ID == A ID |
| 6 | `port_delete_invalid` | 删除无效 ID | ① `delete(-1)` ② `delete(9999)` | 不崩溃 |
| 7 | `port_delete_twice` | 重复删除 | ① 创建 ② 删除 ③ 再次删除 | 不崩溃 |
| 8 | `port_default_state` | 默认状态 | ① 创建端口 ② `get_type()` ③ `get_handler()` | type == -1, handler == NULL |
| 9 | `port_create_max` | 满容量边界 | ① 循环创建 64 个 ② 再创建一个 | 64 个成功，第 65 个返回 INVALID |
### 3. 类型与 handler 设置获取（7 个）
| # | 测试名 | 描述 | 步骤 | 预期 |
|---|--------|------|------|------|
| 10 | `type_set_get` | 设置并获取类型 | ① `set_type(sensor)` ② `get_type()` | 返回 sensor |
| 11 | `type_clear` | 清除类型 | ① `set_type(sensor)` ② `set_type(-1)` ③ `get_type()` | 返回 -1 |
| 12 | `type_switch` | 运行时切换类型 | ① `set_type(sensor)` ② `set_type(status)` ③ `get_type()` | 返回 status |
| 13 | `type_from_invalid_port` | 无效端口查询类型 | ① `get_type(-1)` ② `get_type(999)` | 均返回 -1 |
| 14 | `handler_set_get` | 设置并获取 handler | ① `set_handler(f)` ② `get_handler()` | 返回 f |
| 15 | `handler_clear` | 清除 handler | ① `set_handler(f)` ② `set_handler(NULL)` ③ `get_handler()` | 返回 NULL |
| 16 | `handler_from_invalid_port` | 无效端口查询 handler | ① `get_handler(-1)` ② `get_handler(999)` | 均返回 NULL |
### 4. 通道元数据查询（4 个）
| # | 测试名 | 描述 | 步骤 | 预期 |
|---|--------|------|------|------|
| 17 | `channel_count` | 通道计数 | ① `channel_count()` | 3 |
| 18 | `channel_names` | 通道名称 | ① 依次 `channel_name(0/1/2)` | "sensor" / "status" / "control" |
| 19 | `channel_descs` | 通道描述 | ① 依次 `channel_desc(0/1/2)` | "Sensor data" / "Status report" / "Control command" |
| 20 | `channel_invalid_id` | 无效 ID | ① `channel_name(-1/99)` ② `channel_desc(-1/99)` | 均返回 NULL |
### 5. 发送触发（9 个）
| # | 测试名 | 描述 | 步骤 | 预期 |
|---|--------|------|------|------|
| 21 | `send_sensor` | sensor 类型发送 | ① 创建端口 ② set_type(sensor) + set_handler(test) ③ `send_sensor(port, "hello", 5)` | 返回 0；handler 被调用，参数正确 |
| 22 | `send_status` | status 类型发送 | 同上，用 status 通道 | 返回 0 |
| 23 | `send_control` | control 类型发送 | 同上，用 control 通道 | 返回 0 |
| 24 | `send_type_mismatch` | 类型不匹配 | ① set_type(sensor) ② `send_status(port, ...)` | 返回 -3；handler 不被调用 |
| 25 | `send_no_handler` | 未注册 handler | ① set_type(sensor) ② 不设 handler ③ `send_sensor(port, ...)` | 返回 -4 |
| 26 | `send_same_type_multiple_ports` | 同类型多端口 | ① 两端口均设 sensor + handler ② 依次发送 | 各调一次 handler |
| 27 | `send_switch_handler_runtime` | 运行时切换 handler | ① 注册 h1 发送 ② 改注册 h2 发送 | 第一次用 h1，第二次用 h2 |
| 28 | `send_zero_length` | 零长度数据 | ① 正常端口 ② `send_sensor(port, "x", 0)` | 返回 0；handler 被调用，len=0 |
| 29 | `send_null_data` | NULL 数据 | ① 正常端口 ② `send_sensor(port, NULL, 0)` | 返回 0；handler 被调用 |
### 6. 接收回调（1 个）
| # | 测试名 | 描述 | 步骤 | 预期 |
|---|--------|------|------|------|
| 30 | `recv_callback_user_impl` | 用户实现接收回调 | ① `on_recv_sensor(port, data, len)` ② `on_recv_status(port, data, len)` | sensor 回调触发，status 不触发；再触发 status 回调，sensor 不变 |
### 7. 错误处理（2 个）
| # | 测试名 | 描述 | 步骤 | 预期 |
|---|--------|------|------|------|
| 30 | `error_invalid_port` | 无效端口 ID | ① `send_sensor(999, ...)` ② `send_sensor(-1, ...)` | 均返回 -2 |
| 31 | `error_deleted_port` | 已删除端口 | ① 创建设好类型 + handler ② 删除 ③ `send_sensor(原ID, ...)` | 返回 -2 |
## 覆盖矩阵
| 功能模块 | 用例数 | 主要验证点 |
|----------|:------:|------------|
| 未初始化 | 1 | 未 init 调用 send → -1 |
| 端口生命周期 | 7 | 创建/多创建/ID复用/删除异常/满容量 |
| 类型与 handler | 7 | set/get/clear/switch/无效端口 |
| 通道元数据 | 4 | count/names/descs/boundary |
| 发送触发 | 9 | 三通道/类型不匹配/无handler/多端口/切换handler/零长/NULL |
| 接收回调 | 1 | 用户实现覆盖弱符号 |
| 错误处理 | 2 | 无效端口/已删除端口 |
**总计：31 个测试用例**
build/example
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datarouter.c
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/**
* @file datarouter.c
* @brief 数据路由库 —— 实现
*
* 端口表：固定大小数组，每个端口存储报文类型 + handler 列表。
* 发送触发函数逐一调用端口上注册的全部 handler，实现一对多广播。
*/
#include "datarouter.h"
#include <string.h>
#include <stdio.h>
#if defined(__GNUC__) || defined(__clang__)
#define DATAROUTER_WEAK __attribute__((weak))
#else
#define DATAROUTER_WEAK
#endif
#ifndef DATAROUTER_MAX_PORTS
#define DATAROUTER_MAX_PORTS 64
#endif
/**
* @struct port_entry_t
* @brief 端口表条目
*
* @var type 报文类型（DATAROUTER_CHANNEL_xxx / -1）
* @var handlers 外设发送 handler 数组
* @var count 当前注册的 handler 数量
* @var in_use 1=已分配，0=空闲
*/
typedef struct {
int type;
datarouter_send_handler_t handlers[DATAROUTER_MAX_HANDLERS_PER_PORT];
int count;
uint8_t in_use;
} port_entry_t;
static port_entry_t ports[DATAROUTER_MAX_PORTS];
static uint8_t initialized;
/* ---- 通道元数据（X-macro 展开） ---- */
static const char *channel_names[] = {
#define DATAROUTER_CHANNEL(id, desc) #id,
DATAROUTER_CHANNELS
#undef DATAROUTER_CHANNEL
};
static const char *channel_descs[] = {
#define DATAROUTER_CHANNEL(id, desc) desc,
DATAROUTER_CHANNELS
#undef DATAROUTER_CHANNEL
};
/* ---- 弱符号接收回调默认实现 ---- */
#define DATAROUTER_CHANNEL(id, desc) \
DATAROUTER_WEAK void datarouter_on_recv_##id( \
uint32_t port_id, const void *data, size_t len) \
{ \
(void)port_id; (void)data; (void)len; \
}
DATAROUTER_CHANNELS
#undef DATAROUTER_CHANNEL
/* ---- 发送触发函数实现 ---- */
#define DATAROUTER_CHANNEL(id, desc) \
int datarouter_send_##id(uint32_t port_id, const void *data, size_t len) \
{ \
if (!initialized) return -1; \
if (port_id >= DATAROUTER_MAX_PORTS || !ports[port_id].in_use) return -2; \
if (ports[port_id].type != DATAROUTER_CHANNEL_##id) return -3; \
if (ports[port_id].count == 0) return -4; \
for (int _i = 0; _i < ports[port_id].count; _i++) \
ports[port_id].handlers[_i](port_id, data, len); \
return 0; \
}
DATAROUTER_CHANNELS
#undef DATAROUTER_CHANNEL
/* ---- 端口管理 API ---- */
void datarouter_init(void)
{
if (initialized) return;
memset(ports, 0, sizeof(ports));
initialized = 1;
}
void datarouter_reset(void)
{
initialized = 0;
memset(ports, 0, sizeof(ports));
}
datarouter_port_t datarouter_port_create(void)
{
if (!initialized) return DATAROUTER_INVALID_PORT;
for (int i = 0; i < DATAROUTER_MAX_PORTS; i++) {
if (!ports[i].in_use) {
ports[i].in_use = 1;
ports[i].type = -1;
ports[i].count = 0;
return (datarouter_port_t)i;
}
}
return DATAROUTER_INVALID_PORT;
}
void datarouter_port_delete(datarouter_port_t port)
{
if (!initialized) return;
if (port < 0 || port >= DATAROUTER_MAX_PORTS) return;
ports[port].in_use = 0;
}
void datarouter_port_set_type(datarouter_port_t port, int channel_id)
{
if (!initialized) return;
if (port < 0 || port >= DATAROUTER_MAX_PORTS || !ports[port].in_use) return;
ports[port].type = channel_id;
}
int datarouter_port_get_type(datarouter_port_t port)
{
if (!initialized) return -1;
if (port < 0 || port >= DATAROUTER_MAX_PORTS || !ports[port].in_use) return -1;
return ports[port].type;
}
int datarouter_port_add_handler(datarouter_port_t port, datarouter_send_handler_t handler)
{
if (!initialized) return -1;
if (port < 0 || port >= DATAROUTER_MAX_PORTS || !ports[port].in_use) return -1;
if (ports[port].count >= DATAROUTER_MAX_HANDLERS_PER_PORT) return -2;
for (int i = 0; i < ports[port].count; i++)
if (ports[port].handlers[i] == handler) return -3;
ports[port].handlers[ports[port].count++] = handler;
return 0;
}
int datarouter_port_remove_handler(datarouter_port_t port, datarouter_send_handler_t handler)
{
if (!initialized) return -1;
if (port < 0 || port >= DATAROUTER_MAX_PORTS || !ports[port].in_use) return -1;
for (int i = 0; i < ports[port].count; i++) {
if (ports[port].handlers[i] == handler) {
ports[port].handlers[i] = ports[port].handlers[--ports[port].count];
return 0;
}
}
return -2;
}
void datarouter_port_clear_handlers(datarouter_port_t port)
{
if (!initialized) return;
if (port < 0 || port >= DATAROUTER_MAX_PORTS || !ports[port].in_use) return;
ports[port].count = 0;
}
int datarouter_port_handler_count(datarouter_port_t port)
{
if (!initialized) return -1;
if (port < 0 || port >= DATAROUTER_MAX_PORTS || !ports[port].in_use) return -1;
return ports[port].count;
}
/* ---- 通道元数据查询 ---- */
int datarouter_channel_count(void)
{
return DATAROUTER_CHANNEL_COUNT;
}
const char *datarouter_channel_name(int channel_id)
{
if (channel_id < 0 || channel_id >= DATAROUTER_CHANNEL_COUNT) return NULL;
return channel_names[channel_id];
}
const char *datarouter_channel_desc(int channel_id)
{
if (channel_id < 0 || channel_id >= DATAROUTER_CHANNEL_COUNT) return NULL;
return channel_descs[channel_id];
}
datarouter.h
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/**
* @file datarouter.h
* @brief 数据路由库 —— 公共接口
*
* ## 概念
*
* - **通道 (Channel)**：编译期声明的报文类型（如 sensor / status / control）
* - **端口 (Port)**：运行期创建的连接点，绑定一个报文类型和多个外设发送 handler
* - **路由**：将报文类型关联到一个或多个物理外设发送函数
* - **多外设**：一个端口可注册多个 handler，发送时逐一调用全部 handler
*
* ## 使用流程
*
* 1. 在 datarouter_config.h 中声明报文类型
* 2. 调用 datarouter_init() 初始化
* 3. 通过 datarouter_port_create() 创建端口
* 4. 调用 datarouter_port_set_type() 指定端口处理的报文类型
* 5. 调用 datarouter_port_add_handler() 注册一个或多个外设发送函数
* 6. 调用 datarouter_send_<id>() 触发发送（库逐一调用所有注册的 handler）
* 7. 实现 datarouter_on_recv_<id>() 处理从外设收到的报文
* 8. datarouter_port_delete() 移除端口
*
* ## 路由规则
*
* datarouter_send_<id>(port, data, len)
* → 校验端口类型
* → for each handler: handler(port, data, len)
* → return 0
*
* 接收：外设收到数据 → 用户识别报文类型 → 调 datarouter_on_recv_<id>(port, data, len)
*/
#ifndef DATAROUTER_H
#define DATAROUTER_H
#include <stdint.h>
#include <stddef.h>
#include "datarouter_config.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @enum datarouter_channel
* @brief 报文类型枚举
*
* 由 DATAROUTER_CHANNELS 宏列表自动生成。
*/
enum datarouter_channel {
#define DATAROUTER_CHANNEL(id, desc) DATAROUTER_CHANNEL_##id,
DATAROUTER_CHANNELS
#undef DATAROUTER_CHANNEL
DATAROUTER_CHANNEL_COUNT
};
/**
* @brief 外设发送 handler 类型
*
* @param[in] port_id 源端口 ID
* @param[in] data 数据缓冲区
* @param[in] len 数据长度
*/
typedef void (*datarouter_send_handler_t)(uint32_t port_id, const void *data, size_t len);
#ifndef DATAROUTER_MAX_HANDLERS_PER_PORT
#define DATAROUTER_MAX_HANDLERS_PER_PORT 4
#endif
/**
* @defgroup send_functions 发送触发函数
*
* 每个报文类型生成一个发送触发函数。
* 内部校验端口后，逐一调用端口上注册的所有 handler。
* @{
*/
#define DATAROUTER_CHANNEL(id, desc) \
int datarouter_send_##id(uint32_t port_id, const void *data, size_t len);
DATAROUTER_CHANNELS
#undef DATAROUTER_CHANNEL
/** @} */
/**
* @defgroup recv_callbacks 接收回调声明
*
* 每个报文类型生成一个接收回调声明。用户实现。
* @{
*/
#define DATAROUTER_CHANNEL(id, desc) \
void datarouter_on_recv_##id(uint32_t port_id, const void *data, size_t len);
DATAROUTER_CHANNELS
#undef DATAROUTER_CHANNEL
/** @} */
/**
* @defgroup port_api 端口管理 API
*
* 每个端口可注册 N 个外设发送 handler（上限 DATAROUTER_MAX_HANDLERS_PER_PORT）。
* 发送时逐一调用全部 handler，实现一对多广播路由。
* @{
*/
typedef int32_t datarouter_port_t;
#define DATAROUTER_INVALID_PORT ((datarouter_port_t)-1)
void datarouter_init(void);
void datarouter_reset(void);
datarouter_port_t datarouter_port_create(void);
void datarouter_port_delete(datarouter_port_t port);
void datarouter_port_set_type(datarouter_port_t port, int channel_id);
int datarouter_port_get_type(datarouter_port_t port);
/**
* @brief 为端口添加一个外设发送 handler
* @param[in] port 端口 ID
* @param[in] handler 发送函数指针（不可为 NULL）
* @retval 0 成功
* @retval -1 端口无效
* @retval -2 handler 列表已满
* @retval -3 handler 已存在（不重复添加）
*/
int datarouter_port_add_handler(datarouter_port_t port, datarouter_send_handler_t handler);
/**
* @brief 从端口移除一个外设发送 handler
* @param[in] port 端口 ID
* @param[in] handler 要移除的函数指针
* @retval 0 成功
* @retval -1 端口无效
* @retval -2 handler 未找到
*/
int datarouter_port_remove_handler(datarouter_port_t port, datarouter_send_handler_t handler);
/** @brief 清除端口所有 handler */
void datarouter_port_clear_handlers(datarouter_port_t port);
/** @brief 获取端口当前 handler 数量 @return handler 数量，-1 表示端口无效 */
int datarouter_port_handler_count(datarouter_port_t port);
/** @} */
/**
* @defgroup introspection 报文类型元数据查询
* @{
*/
int datarouter_channel_count(void);
const char *datarouter_channel_name(int channel_id);
const char *datarouter_channel_desc(int channel_id);
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* DATAROUTER_H */
datarouter_config.h
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/**
* @file datarouter_config.h
* @brief 数据报文类型配置
*
* 用户在此文件中定义所有报文类型（通道）。
* 每个报文类型通过 DATAROUTER_CHANNEL(id, desc) 宏声明，
* 库在编译期据此自动生成：
* - 通道枚举值 DATAROUTER_CHANNEL_<id>
* - 发送触发函数 datarouter_send_<id>(port, data, len)
* - 接收回调声明 datarouter_on_recv_<id>(port, data, len)
*/
#ifndef DATAROUTER_CONFIG_H
#define DATAROUTER_CONFIG_H
/**
* @def DATAROUTER_CHANNELS
* @brief 报文类型列表宏
*
* 每行格式：DATAROUTER_CHANNEL(标识符, "描述文字")
* 用户按需增删改。每个标识符对应一种报文类型。
*
* @code
* #define DATAROUTER_CHANNELS \
* DATAROUTER_CHANNEL(sensor, "Sensor data") \
* DATAROUTER_CHANNEL(control, "Control command")
* @endcode
*/
#define DATAROUTER_CHANNELS \
DATAROUTER_CHANNEL(sensor, "Sensor data") \
DATAROUTER_CHANNEL(status, "Status report") \
DATAROUTER_CHANNEL(control, "Control command")
#endif /* DATAROUTER_CONFIG_H */
example.c
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/**
* @file example.c
* @brief 数据路由库使用示例
*
* 展示：
* 1. 编译期声明报文类型 → 自动生成发送触发函数和接收回调声明
* 2. 创建端口、设置报文类型
* 3. 为一个端口注册多个外设 handler（一对多广播路由）
* 4. 运行时增删 handler，切换路由
* 5. 实现接收回调处理外设收到的数据
*/
#include "datarouter.h"
#include <stdio.h>
#include <string.h>
/* ---- 外设发送 handler 实现 ---- */
static void uart_send(uint32_t port_id, const void *data, size_t len)
{
printf("[UART] port %u: %.*s\n", port_id, (int)len, (const char *)data);
}
static void tcp_send(uint32_t port_id, const void *data, size_t len)
{
printf("[TCP] port %u: %.*s\n", port_id, (int)len, (const char *)data);
}
static void file_send(uint32_t port_id, const void *data, size_t len)
{
printf("[FILE] port %u: %.*s\n", port_id, (int)len, (const char *)data);
}
static void can_send(uint32_t port_id, const void *data, size_t len)
{
printf("[CAN] port %u: %.*s\n", port_id, (int)len, (const char *)data);
}
/* ---- 接收回调实现 ---- */
void datarouter_on_recv_sensor(uint32_t port_id, const void *data, size_t len)
{
printf("[RX:sensor] port %u: %.*s\n", port_id, (int)len, (const char *)data);
}
void datarouter_on_recv_status(uint32_t port_id, const void *data, size_t len)
{
printf("[RX:status] port %u: %.*s\n", port_id, (int)len, (const char *)data);
}
/* ---- main ---- */
int main(void)
{
datarouter_init();
printf("Channels:\n");
for (int i = 0; i < datarouter_channel_count(); i++)
printf(" [%d] %s - %s\n", i,
datarouter_channel_name(i),
datarouter_channel_desc(i));
/*
* 创建一个 sensor 端口，注册多个 handler。
* 一次 send_sensor() 调用同时路由到 UART + TCP + CAN。
*/
datarouter_port_t sensor_port = datarouter_port_create();
datarouter_port_set_type(sensor_port, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(sensor_port, uart_send);
datarouter_port_add_handler(sensor_port, tcp_send);
datarouter_port_add_handler(sensor_port, can_send);
printf("\n--- send sensor (UART + TCP + CAN) ---\n");
datarouter_send_sensor(sensor_port, "temperature:25.3", 16);
/*
* 运行时移除 TCP handler，只剩 UART + CAN。
*/
printf("\n--- remove TCP, keep UART + CAN ---\n");
datarouter_port_remove_handler(sensor_port, tcp_send);
datarouter_send_sensor(sensor_port, "temperature:26.1", 16);
/*
* 运行时再添加 FILE handler。
*/
printf("\n--- add FILE back, now UART + CAN + FILE ---\n");
datarouter_port_add_handler(sensor_port, file_send);
datarouter_send_sensor(sensor_port, "temperature:27.0", 16);
/*
* 清除所有 handler，不再输出到任何外设。
*/
printf("\n--- clear all handlers, nothing sent ---\n");
datarouter_port_clear_handlers(sensor_port);
int ret = datarouter_send_sensor(sensor_port, "lost", 4);
printf("send_sensor after clear returned %d\n", ret);
/* ---- 接收 ---- */
printf("\n--- simulate peripheral receive ---\n");
datarouter_on_recv_sensor(0, "temperature:24.8", 16);
datarouter_on_recv_status(1, "status:ERROR", 12);
datarouter_port_delete(sensor_port);
return 0;
}
library.c
-7
View File
@@ -1,7 +0,0 @@
#include "library.h"
#include <stdio.h>
void hello(void) {
printf("Hello, World!\n");
}
library.h
-6
View File
@@ -1,6 +0,0 @@
#ifndef DATAROUTER_LIBRARY_H
#define DATAROUTER_LIBRARY_H
void hello(void);
#endif // DATAROUTER_LIBRARY_H
tests/test_datarouter.c
+511
View File
@@ -0,0 +1,511 @@
/**
* @file test_datarouter.c
* @brief 数据路由库单元测试
*
* 覆盖：
* - 端口管理（创建/删除/复用/边界）
* - 端口类型与多 handler 增删查
* - 通道元数据查询
* - 一对多广播发送（多 handler 逐一调用）
* - 运行时增删 handler 改变路由
* - 接收回调
* - 错误处理
*/
#include "datarouter.h"
#include <stdio.h>
#include <string.h>
/* ================================================================
* 测试框架
* ================================================================ */
static int _total_run, _total_pass, _total_fail;
static int _err;
static const char *_cur_name;
#define FIXTURE_MAX 16
typedef struct {
datarouter_port_t ports[FIXTURE_MAX];
int count;
} fixture_t;
#define FIXTURE_INIT(f) memset((f), 0, sizeof(*(f)))
#define FIXTURE_PUSH(f, p) do { if ((f)->count < FIXTURE_MAX) (f)->ports[(f)->count++] = (p); } while (0)
#define FIXTURE_CLEAN(f) do { for (int _i = 0; _i < (f)->count; _i++) datarouter_port_delete((f)->ports[_i]); } while (0)
#define FIXTURE_CREATE(f) ({ datarouter_port_t _p = datarouter_port_create(); FIXTURE_PUSH(f, _p); _p; })
#define TEST_START(name) \
static void test_##name(void) \
{ \
fixture_t _fix; \
FIXTURE_INIT(&_fix); \
_cur_name = #name; \
_err = 0;
#define TEST_END() \
cleanup: \
FIXTURE_CLEAN(&_fix); \
if (_err) { _total_fail++; printf(" FAIL %s\n", _cur_name); } \
else { _total_pass++; printf(" PASS %s\n", _cur_name); } \
_total_run++; \
}
#define CHECK(cond, ...) do { \
if (!(cond)) { \
printf(" %s [line %d]: ", _cur_name, __LINE__); \
printf(__VA_ARGS__); \
printf("\n"); \
_err = 1; \
goto cleanup; \
} \
} while (0)
/* ================================================================
* 测试用 handler
* ================================================================ */
static int _h_cnt;
static int _h_total;
static int _h_ids[16];
static void _h(uint32_t p, const void *d, size_t l)
{
(void)d; (void)l;
if (_h_cnt < 16) _h_ids[_h_cnt] = (int)p;
_h_cnt++;
_h_total++;
}
static void _h_a(uint32_t p, const void *d, size_t l) { (void)p; (void)d; (void)l; _h_cnt++; }
static void _h_b(uint32_t p, const void *d, size_t l) { (void)p; (void)d; (void)l; _h_cnt++; }
static void _h_c(uint32_t p, const void *d, size_t l) { (void)p; (void)d; (void)l; _h_cnt++; }
static void _h_d(uint32_t p, const void *d, size_t l) { (void)p; (void)d; (void)l; _h_cnt++; }
static void reset_hstate(void)
{
_h_cnt = _h_total = 0;
memset(_h_ids, 0, sizeof(_h_ids));
}
/* ================================================================
* 1. 未初始化
* ================================================================ */
TEST_START(error_uninit)
int ret = datarouter_send_sensor(0, "d", 1);
CHECK(ret == -1, "expected -1, got %d", ret);
TEST_END()
/* ================================================================
* 2. 端口管理
* ================================================================ */
TEST_START(port_create_basic)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
CHECK(p >= 0, "create returned %d", p);
TEST_END()
TEST_START(port_create_multiple)
datarouter_port_t p1 = FIXTURE_CREATE(&_fix);
datarouter_port_t p2 = FIXTURE_CREATE(&_fix);
datarouter_port_t p3 = FIXTURE_CREATE(&_fix);
CHECK(p1 >= 0 && p2 >= 0 && p3 >= 0, "some invalid");
CHECK(p1 != p2 && p2 != p3, "IDs should be unique");
TEST_END()
TEST_START(port_create_reuse)
datarouter_port_t p1 = FIXTURE_CREATE(&_fix);
datarouter_port_delete(p1);
datarouter_port_t p2 = FIXTURE_CREATE(&_fix);
CHECK(p1 == p2, "expected reuse ID %d, got %d", p1, p2);
TEST_END()
TEST_START(port_delete_invalid)
datarouter_port_delete(-1);
datarouter_port_delete(9999);
TEST_END()
TEST_START(port_delete_twice)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_delete(p);
datarouter_port_delete(p);
_fix.count--;
TEST_END()
TEST_START(port_default_state)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
CHECK(datarouter_port_get_type(p) == -1, "type should be -1");
CHECK(datarouter_port_handler_count(p) == 0, "handler count should be 0");
TEST_END()
TEST_START(port_create_max)
int created = 0;
for (int i = 0; i < 64; i++) {
datarouter_port_t p = datarouter_port_create();
if (p == DATAROUTER_INVALID_PORT) break;
FIXTURE_PUSH(&_fix, p);
created++;
}
CHECK(created >= 64, "expected 64, got %d", created);
CHECK(datarouter_port_create() == DATAROUTER_INVALID_PORT,
"expected INVALID after exhaustion");
TEST_END()
/* ================================================================
* 3. 类型
* ================================================================ */
TEST_START(type_set_get)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
CHECK(datarouter_port_get_type(p) == DATAROUTER_CHANNEL_sensor, "type mismatch");
TEST_END()
TEST_START(type_clear)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_set_type(p, -1);
CHECK(datarouter_port_get_type(p) == -1, "should be -1");
TEST_END()
TEST_START(type_switch)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_status);
CHECK(datarouter_port_get_type(p) == DATAROUTER_CHANNEL_status, "should be status");
TEST_END()
TEST_START(type_from_invalid)
CHECK(datarouter_port_get_type(-1) == -1, NULL);
CHECK(datarouter_port_get_type(999) == -1, NULL);
TEST_END()
/* ================================================================
* 4. 多 handler 增删查
* ================================================================ */
TEST_START(handler_add_one)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
CHECK(datarouter_port_add_handler(p, _h) == 0, "add failed");
CHECK(datarouter_port_handler_count(p) == 1, "count=%d", datarouter_port_handler_count(p));
TEST_END()
TEST_START(handler_add_multiple)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
CHECK(datarouter_port_add_handler(p, _h_a) == 0, "add a");
CHECK(datarouter_port_add_handler(p, _h_b) == 0, "add b");
CHECK(datarouter_port_add_handler(p, _h_c) == 0, "add c");
CHECK(datarouter_port_handler_count(p) == 3, "count=%d", datarouter_port_handler_count(p));
TEST_END()
TEST_START(handler_add_duplicate)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
CHECK(datarouter_port_add_handler(p, _h) == 0, "first add");
CHECK(datarouter_port_add_handler(p, _h) == -3, "duplicate should return -3");
TEST_END()
TEST_START(handler_add_max)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
CHECK(datarouter_port_add_handler(p, _h_a) == 0, "add a");
CHECK(datarouter_port_add_handler(p, _h_b) == 0, "add b");
CHECK(datarouter_port_add_handler(p, _h_c) == 0, "add c");
CHECK(datarouter_port_add_handler(p, _h_d) == 0, "add d");
CHECK(datarouter_port_handler_count(p) == DATAROUTER_MAX_HANDLERS_PER_PORT,
"count=%d", datarouter_port_handler_count(p));
/* 第 5 个应返回 -2（已满） */
CHECK(datarouter_port_add_handler(p, _h) == -2,
"expected -2 (full), got %d", datarouter_port_add_handler(p, _h));
TEST_END()
TEST_START(handler_remove)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_add_handler(p, _h_a);
datarouter_port_add_handler(p, _h_b);
datarouter_port_add_handler(p, _h_c);
CHECK(datarouter_port_remove_handler(p, _h_b) == 0, "remove b");
CHECK(datarouter_port_handler_count(p) == 2, "count should be 2, got %d", datarouter_port_handler_count(p));
TEST_END()
TEST_START(handler_remove_not_found)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
CHECK(datarouter_port_remove_handler(p, _h) == -2, "expected -2");
TEST_END()
TEST_START(handler_clear)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_add_handler(p, _h_a);
datarouter_port_add_handler(p, _h_b);
datarouter_port_clear_handlers(p);
CHECK(datarouter_port_handler_count(p) == 0, "count should be 0");
TEST_END()
TEST_START(handler_from_invalid)
CHECK(datarouter_port_handler_count(-1) == -1, NULL);
CHECK(datarouter_port_handler_count(999) == -1, NULL);
CHECK(datarouter_port_add_handler(-1, _h) == -1, NULL);
CHECK(datarouter_port_remove_handler(999, _h) == -1, NULL);
TEST_END()
/* ================================================================
* 5. 通道元数据
* ================================================================ */
TEST_START(channel_count)
CHECK(datarouter_channel_count() == 3, "expected 3");
TEST_END()
TEST_START(channel_names)
CHECK(strcmp(datarouter_channel_name(0), "sensor") == 0, NULL);
CHECK(strcmp(datarouter_channel_name(1), "status") == 0, NULL);
CHECK(strcmp(datarouter_channel_name(2), "control") == 0, NULL);
TEST_END()
TEST_START(channel_descs)
CHECK(strcmp(datarouter_channel_desc(0), "Sensor data") == 0, NULL);
CHECK(strcmp(datarouter_channel_desc(1), "Status report") == 0, NULL);
CHECK(strcmp(datarouter_channel_desc(2), "Control command") == 0, NULL);
TEST_END()
TEST_START(channel_invalid_id)
CHECK(datarouter_channel_name(-1) == NULL, NULL);
CHECK(datarouter_channel_name(99) == NULL, NULL);
CHECK(datarouter_channel_desc(-1) == NULL, NULL);
CHECK(datarouter_channel_desc(99) == NULL, NULL);
TEST_END()
/* ================================================================
* 6. 发送 — 一对多广播
* ================================================================ */
TEST_START(send_one_handler)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(p, _h);
reset_hstate();
CHECK(datarouter_send_sensor(p, "d", 1) == 0, "send failed");
CHECK(_h_cnt == 1, "handler called %d times", _h_cnt);
TEST_END()
TEST_START(send_multi_handlers)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(p, _h_a);
datarouter_port_add_handler(p, _h_b);
datarouter_port_add_handler(p, _h_c);
reset_hstate();
CHECK(datarouter_send_sensor(p, "d", 1) == 0, "send failed");
CHECK(_h_cnt == 3, "expected 3 handler calls, got %d", _h_cnt);
TEST_END()
TEST_START(send_type_mismatch)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(p, _h);
reset_hstate();
CHECK(datarouter_send_status(p, "d", 1) == -3, "expected -3");
CHECK(_h_cnt == 0, "handler should not fire");
TEST_END()
TEST_START(send_no_handler)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
reset_hstate();
CHECK(datarouter_send_sensor(p, "d", 1) == -4, "expected -4");
TEST_END()
TEST_START(send_three_channels)
/* 三个通道各一个端口 */
datarouter_port_t p1 = FIXTURE_CREATE(&_fix);
datarouter_port_t p2 = FIXTURE_CREATE(&_fix);
datarouter_port_t p3 = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p1, DATAROUTER_CHANNEL_sensor);
datarouter_port_set_type(p2, DATAROUTER_CHANNEL_status);
datarouter_port_set_type(p3, DATAROUTER_CHANNEL_control);
datarouter_port_add_handler(p1, _h);
datarouter_port_add_handler(p2, _h);
datarouter_port_add_handler(p3, _h);
reset_hstate();
CHECK(datarouter_send_sensor(p1, "a", 1) == 0, NULL);
CHECK(datarouter_send_status(p2, "b", 1) == 0, NULL);
CHECK(datarouter_send_control(p3, "c", 1) == 0, NULL);
CHECK(_h_cnt == 3, "expected 3 total calls, got %d", _h_cnt);
TEST_END()
/* ================================================================
* 7. 发送 — 运行时增删 handler
* ================================================================ */
TEST_START(send_remove_handler)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(p, _h_a);
datarouter_port_add_handler(p, _h_b);
reset_hstate();
datarouter_send_sensor(p, "d", 1);
CHECK(_h_cnt == 2, "2 handlers: count=%d", _h_cnt);
datarouter_port_remove_handler(p, _h_a);
reset_hstate();
datarouter_send_sensor(p, "d", 1);
CHECK(_h_cnt == 1, "after remove: count=%d", _h_cnt);
TEST_END()
TEST_START(send_clear_handlers)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(p, _h_a);
datarouter_port_add_handler(p, _h_b);
datarouter_port_clear_handlers(p);
CHECK(datarouter_send_sensor(p, "d", 1) == -4, "expected -4 after clear");
TEST_END()
/* ================================================================
* 8. 接收回调
* ================================================================ */
static int _rx_s;
static void rx_s(uint32_t p, const void *d, size_t l) { (void)p; (void)d; (void)l; _rx_s++; }
static int _rx_t;
static void rx_t(uint32_t p, const void *d, size_t l) { (void)p; (void)d; (void)l; _rx_t++; }
void datarouter_on_recv_sensor(uint32_t p, const void *d, size_t l) { rx_s(p, d, l); }
void datarouter_on_recv_status(uint32_t p, const void *d, size_t l) { rx_t(p, d, l); }
TEST_START(recv_callback)
_rx_s = _rx_t = 0;
datarouter_on_recv_sensor(0, "data", 4);
CHECK(_rx_s == 1, "sensor cb: %d", _rx_s);
CHECK(_rx_t == 0, "status cb: %d", _rx_t);
datarouter_on_recv_status(1, "data", 4);
CHECK(_rx_t == 1, "status cb: %d", _rx_t);
CHECK(_rx_s == 1, "sensor cb unchanged: %d", _rx_s);
TEST_END()
/* ================================================================
* 9. 错误处理
* ================================================================ */
TEST_START(error_invalid_port)
CHECK(datarouter_send_sensor(999, "d", 1) == -2, NULL);
CHECK(datarouter_send_sensor(-1, "d", 1) == -2, NULL);
TEST_END()
TEST_START(error_deleted_port)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(p, _h);
datarouter_port_delete(p);
CHECK(datarouter_send_sensor(p, "d", 1) == -2, "expected -2");
_fix.count--;
TEST_END()
/* ================================================================
* 10. 零长与 NULL
* ================================================================ */
TEST_START(send_zero_length)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(p, _h);
reset_hstate();
CHECK(datarouter_send_sensor(p, "x", 0) == 0, NULL);
CHECK(_h_cnt == 1, "handler called %d", _h_cnt);
TEST_END()
TEST_START(send_null_data)
datarouter_port_t p = FIXTURE_CREATE(&_fix);
datarouter_port_set_type(p, DATAROUTER_CHANNEL_sensor);
datarouter_port_add_handler(p, _h);
reset_hstate();
CHECK(datarouter_send_sensor(p, NULL, 0) == 0, NULL);
CHECK(_h_cnt == 1, "handler called %d", _h_cnt);
TEST_END()
/* ================================================================
* 主函数
* ================================================================ */
#define RUN(name) do { reset_hstate(); test_##name(); } while (0)
int main(void)
{
printf("==== DataRouter Unit Tests ====\n\n");
printf("[uninitialized]\n");
RUN(error_uninit);
datarouter_init();
printf("\n[port management]\n");
RUN(port_create_basic);
RUN(port_create_multiple);
RUN(port_create_reuse);
RUN(port_delete_invalid);
RUN(port_delete_twice);
RUN(port_default_state);
RUN(port_create_max);
printf("\n");
datarouter_reset(); datarouter_init();
printf("[type set/get]\n");
RUN(type_set_get);
RUN(type_clear);
RUN(type_switch);
RUN(type_from_invalid);
printf("\n");
printf("[multi-handler add/remove]\n");
RUN(handler_add_one);
RUN(handler_add_multiple);
RUN(handler_add_duplicate);
RUN(handler_add_max);
RUN(handler_remove);
RUN(handler_remove_not_found);
RUN(handler_clear);
RUN(handler_from_invalid);
printf("\n");
printf("[channel introspection]\n");
RUN(channel_count);
RUN(channel_names);
RUN(channel_descs);
RUN(channel_invalid_id);
printf("\n");
printf("[send — one-to-many broadcast]\n");
RUN(send_one_handler);
RUN(send_multi_handlers);
RUN(send_type_mismatch);
RUN(send_no_handler);
RUN(send_three_channels);
RUN(send_remove_handler);
RUN(send_clear_handlers);
RUN(send_zero_length);
RUN(send_null_data);
printf("\n");
printf("[receive callback]\n");
RUN(recv_callback);
printf("\n");
printf("[error handling]\n");
RUN(error_invalid_port);
RUN(error_deleted_port);
printf("\n");
printf("==============================\n");
printf(" total: %d | pass: %d | fail: %d\n\n",
_total_run, _total_pass, _total_fail);
return _total_fail > 0 ? 1 : 0;
}