test(NET): net_pending 模块（43 条，覆盖 87.1%），钉住通知值回传契约

假 CH395F 的第二批消费者。新增 test/host/net_pending/，net_pending.c 覆盖 169/194 = 87.1%。共享假芯片补了**缓冲尺寸宏链的同构转抄**（RAM_BLOCK 512 / SEND_BLOCKS 2 → SEND_BUF 1024；RECV_BLOCKS 4 → RECV_BUF 2048 → SPI_DMA_BUF 2052 → SPI_DMA_MAX_PAYLOAD 2048），于是 net_pending.h 里的 NET_SEND_CHUNK_MAX 是**真值 1024**，分块断言测的是芯片上界而不是假件自己发明的数字。本模块的核心契约是跨上下文回传：AGENTS 模块约定写着 net_* 的错误码经**任务通知值** 回传（net_msg_t 按值拷入队列，netTask 改的是自己那份副本，调用方永远看不到；也勿给 net_msg_t 加回传字段，否则调用方读到栈垃圾）。台架读不到通知值，所以把 xTaskNotify 做成可观测假件（记目标句柄与通知值）之后，这条契约才第一次被真正验证。钉住的契约： - 注册闸门：越界 fd 报 BADF；同 fd 已有挂起报 BUSY；caller 为空报 BUSY；**属主任务自己发起被拒**（自己等自己等于死锁 netTask）；to_ms=0 记为无限等（不置 deadline）。 - 到达与截断：读量钳在调用方缓冲内（绝不越界写别人的 buf）；readable 但芯片没数据时只清标志继续等，不误交 0 字节。 - 收尾四条分支：还有残留先把最后一包读走再收尾（**不丢尾包**）；干净结束报 0 并按 auto_relisten 请求重开监听（不自动重开的不被偷偷要求重建）；released_abnormal 报 CONNRESET 而不是 0（调用方要能分辨好坏收尾）；session_dead 与 CLOSED 同路。 - settle_close：没挂起时直接返回不打扰芯片；有残留交还字节数；无残留报 CONNRESET。 - 挂起发送：参数校验（buf 空 / len<=0 / sent<0 / sent>=len 报 INVAL）；单次写入钳在 NET_SEND_CHUNK_MAX；**deadline 每写一轮就续期**（还在推进就不该被 1000ms 掐死， FTP 上传大文件最容易撞这条）；停滞不前进才报 TIMEDOUT；槽位消失或会话塌掉都**交还已发字节数**（不是错误码，调用方据此算进度）；cancel 留痕且幂等；**clear 不发通知** （与 recv 侧同一条纪律，不给调用方假答复）。自查：42/43 首跑，唯一红的是**我的测试构造缺陷**——无限等那条没先把槽位置成在用，被 in_use==0 兜底分支提前收口，测不到时间轴；补 mk_sock 后 43/43。reset_all 从上一批的教训直接带过来（连被测模块的 static 挂起表与属主句柄一起复位），这次没再红。覆盖率与台账：套件 23 → 24 全绿；files_tested 27 → 28；未触及 .c 39 → 38；分母 3,572 → 3,766 行；line=3297/3766（87.5%）、func=255/282（90.4%）。恒等式 38 = 4(P1 剩) + 5(P2) + 29(P3) 仍咬合。编号补建 TC-HOST-NETPEND（游标 040），族数 17 → 18；注册表仍只做增量插入。自查门禁：test-cppcheck Passed；check_ids --strict 通过；doc-links 35 处（= 存量）； 12 个新增/改动文件 BOM/CR/U+FFFD/行尾逐项净。零生产代码改动，未跑 @build。 --all-files 仍只有 mem-numbers / mem-budget（.map 台账漂移，等 Lead 合并后统一回填）与 ui-golden（ref/*.bin 不入库）三条失败，与本分支改动无关。
2026-10-23 22:40:00 +08:00
parent 0a3b932395
commit b4441f0e1e
12 changed files with 702 additions and 17 deletions
@@ -0,0 +1,467 @@
+/*
+ * 模块名称：NET 层挂起 recv / 挂起 send（net_pending）主机侧单元测试
+ * 模块功能：在 PC 上离线验证 Drivers/BSP/NET/net_pending.c 的两条挂起队列：注册闸门
+ *           （越界/重复/执行任务自己发起）、**错误码经任务通知值回传**这条跨上下文
+ *           契约、收数据到达与截断、超时、会话塌掉的四种收尾分支（不丢尾包 / 干净
+ *           结束报 0 / 异常释放报 CONNRESET / 槽位消失报 CONNRESET）、settle_close 的
+ *           收尾语义，以及发送侧的分块上限、停滞判定、deadline 续期与取消语义。
+ *
+ * 被测对象：真实源文件 ../../../Drivers/BSP/NET/net_pending.c（#include 原样纳入）。
+ *           net_pending.h / net_types.h / net_config.h / net_listener.h 全用**真实头**
+ *           （TaskHandle_t 入参、NET_PENDING_REGISTERED、NET_SEND_TIMEOUT_MS、
+ *           net_listener_req_t 枚举一改就编译期报错）。假件：
+ *             - 假 CH395F 芯片（test/host/common/ch395f_fake.h/.c，含与真实头同构转抄
+ *               的缓冲尺寸宏链，NET_SEND_CHUNK_MAX 因此是真值 1024 而非假件自造）；
+ *             - **可观测的 xTaskNotify**（记目标句柄与通知值）与固定句柄的
+ *               xTaskGetCurrentTaskHandle；
+ *             - 记录型 net_listener_request；可控时基；可控 socket 表数组（tick 入参）；
+ *               可控"芯片此刻还有多少字节可读"；dbg_log 计数；net_set_errno 记录。
+ *
+ * 为什么要主机侧单测（而不是只靠台架）：
+ *   1. AGENTS 模块约定写着：net_* 公开 API 的错误码经**任务通知值**回传，因为 net_msg_t
+ *      是**按值拷入队列**的，netTask 改的是自己那份副本，调用方永远看不到；也**勿给
+ *      net_msg_t 加回传字段**（加了只会让调用方读到栈垃圾）。这条契约在真机上表现为
+ *      "偶发拿到 0 或正数却不知道为什么"，日志无痕；在 PC 上必须把 xTaskNotify 做成
+ *      可观测的才谈得上验证——台架根本读不到通知值。
+ *   2. 挂起 recv 的收尾有**四条**分支（还有尾包 / 干净结束报 0 / 异常释放报 CONNRESET /
+ *      槽位没了报 CONNRESET），差一条就是"对端已断而我方任务还挂着"或"最后一包数据
+ *      被丢掉"。真机要凑齐"关闭瞬间芯片接收区还剩字节"这种窗口极难。
+ *   3. 发送侧分块上限 = min(芯片发送缓冲, SPI DMA 上界)：一次写太多会踩芯片 FIFO，
+ *      表现为"大包发送偶发数据错位"；而 deadline 每写一轮就续期，写错就会把**长文件
+ *      在传输中途掐死**（FTP 上传大文件最容易撞）。两者都要能精确数着字节测。
+ *
+ * 覆盖点：TC-NETPEND-001..006 注册闸门；007..018 到达/截断/超时/四条收尾/取消与清理；
+ *   019..021 settle_close；030..040 挂起发送（参数校验、分块、续期、停滞、取消）。
+ *
+ * 通过：全部 TC PASS（main 返回 0）。
+ * 入口：int main(void)，返回 0=PASS / 1=FAIL（由 run 脚本判读）。
+ *
+ * 创建日期：2026-10-23
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "net_pending.h"
+#include "net_listener.h"
+#include "net_socket.h"
+#include "ch395f.h"
+
+#include "ch395f_fake.c"
+#include "net_pending.c"
+
+static int s_total;
+static int s_passed;
+static int s_failed;
+
+#define CHECK(cond, name) do { \
+    s_total++; \
+    if (cond) { s_passed++; printf("  PASS %s\n", name); } \
+    else { s_failed++; printf("  FAIL %s (line %d)\n", name, __LINE__); } \
+} while (0)
+
+int g_npd_info_count;
+int g_npd_error_count;
+int g_npd_debug_count;
+
+/* ============ 可观测的任务通知（本模块最重要的一条契约靠它才测得到） ============ */
+
+static int      g_owner_obj;
+static int      g_caller_obj;
+static int      g_notify_n;
+static void    *g_notify_target[16];
+static uint32_t g_notify_value[16];
+
+TaskHandle_t xTaskGetCurrentTaskHandle(void)
+{
+    return (TaskHandle_t)&g_owner_obj;
+}
+
+BaseType_t xTaskNotify(TaskHandle_t xTaskToNotify, uint32_t ulValue, eNotifyAction eAction)
+{
+    (void)eAction;
+    if (g_notify_n < (int)(sizeof(g_notify_target) / sizeof(g_notify_target[0]))) {
+        g_notify_target[g_notify_n] = (void *)xTaskToNotify;
+        g_notify_value[g_notify_n] = ulValue;
+    }
+    g_notify_n++;
+    return 1;
+}
+
+/* ============ 记录型监听请求 ============ */
+
+static int g_lis_req_n;
+static int g_lis_req_sock;
+static int g_lis_req_reason;
+
+void net_listener_request(int sockfd, net_listener_req_t reason)
+{
+    g_lis_req_n++;
+    g_lis_req_sock = sockfd;
+    g_lis_req_reason = (int)reason;
+}
+
+void net_listener_settle(int sockfd, net_listener_settle_t level) { (void)sockfd; (void)level; }
+void net_listener_clear(int sockfd) { (void)sockfd; }
+void net_listener_tick(void) { }
+
+/* ============ 可控时基与 errno ============ */
+
+static uint32_t g_now;
+static int g_errno_last;
+static int g_errno_calls;
+
+uint32_t HAL_GetTick(void) { return g_now; }
+
+int net_set_errno(int err)
+{
+    g_errno_last = err;
+    g_errno_calls++;
+    return err;
+}
+
+/* ============ 可控 socket 表（tick 的入参） ============ */
+
+static net_sock_t g_socks[NET_MAX_SOCKETS];
+static uint8_t    g_rbuf[64];
+static uint8_t    g_wbuf[4096];
+
+static void mk_sock(int fd, net_sock_state_t st)
+{
+    g_socks[fd].in_use = 1u;
+    g_socks[fd].state = st;
+    g_socks[fd].type = NET_SOCK_STREAM;
+    g_socks[fd].auto_relisten = 1u;
+    g_socks[fd].local_port = 2404u;
+}
+
+static void reset_all(void)
+{
+    int i;
+
+    (void)memset(g_socks, 0, sizeof(g_socks));
+    (void)memset(g_rbuf, 0, sizeof(g_rbuf));
+    g_now = 1000u;
+    g_errno_last = 0;
+    g_errno_calls = 0;
+    g_notify_n = 0;
+    g_lis_req_n = 0;
+    g_lis_req_sock = -1;
+    g_lis_req_reason = -1;
+    g_npd_info_count = 0;
+    g_npd_error_count = 0;
+    g_npd_debug_count = 0;
+    ch395f_fake_reset();
+    /* 被测模块自己的 static 必须复位：两张挂起表 + 属主句柄
+       （net_listener 批次在这里红过 9 条，同样的坑不踩第二遍）。 */
+    for (i = 0; i < NET_MAX_SOCKETS; i++) {
+        s_net_pending[i].active = 0u;
+        s_net_send[i].active = 0u;
+    }
+    s_owner_task = (TaskHandle_t)&g_owner_obj;
+}
+
+static void tc_recv_register(void)
+{
+    int rc;
+
+    printf("-- TC-NETPEND-001..006 recv register --\n");
+    reset_all();
+    rc = net_pending_register(-1, g_rbuf, 10, 100u, (TaskHandle_t)&g_caller_obj);
+    CHECK((rc == -1) && (g_errno_last == NET_ERR_BADF), "TC-NETPEND-001 下越界 fd 报 BADF");
+    rc = net_pending_register(NET_MAX_SOCKETS, g_rbuf, 10, 100u, (TaskHandle_t)&g_caller_obj);
+    CHECK((rc == -1) && (g_errno_last == NET_ERR_BADF), "TC-NETPEND-001b 上越界同样拦下");
+
+    reset_all();
+    rc = net_pending_register(0, g_rbuf, 10, 100u, (TaskHandle_t)&g_caller_obj);
+    CHECK(rc == NET_PENDING_REGISTERED, "TC-NETPEND-005 注册成功回 0x70000000 标记");
+    rc = net_pending_register(0, g_rbuf, 10, 100u, (TaskHandle_t)&g_caller_obj);
+    CHECK((rc == -1) && (g_errno_last == NET_ERR_BUSY),
+          "TC-NETPEND-002 同 fd 已有挂起就拒绝（一条 socket 只挂一个 recv）");
+
+    reset_all();
+    rc = net_pending_register(0, g_rbuf, 10, 100u, NULL);
+    CHECK((rc == -1) && (g_errno_last == NET_ERR_BUSY),
+          "TC-NETPEND-003 caller 为空拒绝（没有回传目标就别挂起）");
+    rc = net_pending_register(0, g_rbuf, 10, 100u, (TaskHandle_t)&g_owner_obj);
+    CHECK((rc == -1) && (g_errno_last == NET_ERR_BUSY),
+          "TC-NETPEND-004 属主任务自己发起被拒（自己等自己 = 死锁 netTask）");
+
+    reset_all();
+    /* 必须先把槽位置成"在用且已建立"：否则 tick 第一条兜底（in_use == 0 →
+     * CONNRESET）就会把挂起收掉，测的就不是时间轴了。 */
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_pending_register(0, g_rbuf, 10, 0u, (TaskHandle_t)&g_caller_obj);
+    CHECK((s_net_pending[0].infinite == 1u) && (s_net_pending[0].deadline == 0u),
+          "TC-NETPEND-006 to_ms=0 记为无限等（不置 deadline）");
+    g_now = 999999u;
+    net_pending_tick(g_socks);
+    CHECK((s_net_pending[0].active == 1u) && (g_notify_n == 0),
+          "TC-NETPEND-006b 无限等不被时间掐掉（也不会偷偷发通知）");
+}
+
+static void tc_recv_paths(void)
+{
+    printf("-- TC-NETPEND-007..018 recv completion --\n");
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    g_socks[0].readable = 1u;
+    (void)net_pending_register(0, g_rbuf, 10, 500u, (TaskHandle_t)&g_caller_obj);
+    ch395f_fake_push_recv_len(0, 5u);
+    net_pending_tick(g_socks);
+    CHECK((g_notify_n == 1) && (g_notify_value[0] == 5u) &&
+          (g_notify_target[0] == (void *)&g_caller_obj) &&
+          (g_socks[0].recv_bytes == 5u) && (g_socks[0].readable == 0u) &&
+          (s_net_pending[0].active == 0u),
+          "TC-NETPEND-007 数据到达：字节数经通知值回传给发起任务");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    g_socks[0].readable = 1u;
+    (void)net_pending_register(0, g_rbuf, 10, 500u, (TaskHandle_t)&g_caller_obj);
+    ch395f_fake_push_recv_len(0, 100u);
+    net_pending_tick(g_socks);
+    CHECK((g_notify_value[0] == 10u) && (g_chip.last_read_len == 10u),
+          "TC-NETPEND-008 读量钳在调用方缓冲内（绝不越界写别人的 buf）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    g_socks[0].readable = 1u;
+    (void)net_pending_register(0, g_rbuf, 10, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_tick(g_socks);
+    CHECK((g_notify_n == 0) && (g_socks[0].readable == 0u) &&
+          (s_net_pending[0].active == 1u),
+          "TC-NETPEND-009 空 readable：清标志继续等，不误交 0 字节");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_pending_register(0, g_rbuf, 10, 100u, (TaskHandle_t)&g_caller_obj);
+    g_now = 1100u;
+    net_pending_tick(g_socks);
+    CHECK((g_notify_value[0] == (uint32_t)NET_ERR_TIMEDOUT) &&
+          (g_errno_last == NET_ERR_TIMEDOUT) && (s_net_pending[0].active == 0u),
+          "TC-NETPEND-010 超时：错误码同时进通知值与 errno（跨上下文拿得到）");
+
+    reset_all();
+    (void)net_pending_register(0, g_rbuf, 10, 500u, (TaskHandle_t)&g_caller_obj);
+    g_socks[0].in_use = 0u;
+    net_pending_tick(g_socks);
+    CHECK(g_notify_value[0] == (uint32_t)NET_ERR_CONNRESET,
+          "TC-NETPEND-011 槽位消失报 CONNRESET（不能让任务熬到超时才发现）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_CLOSED);
+    (void)net_pending_register(0, g_rbuf, 20, 500u, (TaskHandle_t)&g_caller_obj);
+    ch395f_fake_push_recv_len(0, 12u);
+    net_pending_tick(g_socks);
+    CHECK((g_notify_value[0] == 12u) && (g_socks[0].recv_bytes == 12u) &&
+          (g_lis_req_n == 0),
+          "TC-NETPEND-012 关闭但有残留：先把最后一包读走再收尾（不丢尾包）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_CLOSED);
+    (void)net_pending_register(0, g_rbuf, 20, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_tick(g_socks);
+    CHECK((g_notify_value[0] == 0u) && (g_lis_req_n == 1) && (g_lis_req_sock == 0) &&
+          (g_lis_req_reason == (int)NET_LISTENER_REQ_PENDING),
+          "TC-NETPEND-013 干净结束：报 0 并请求重开监听（单连接 socket 必须回 LISTEN）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_CLOSED);
+    g_socks[0].auto_relisten = 0u;
+    (void)net_pending_register(0, g_rbuf, 20, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_tick(g_socks);
+    CHECK((g_notify_value[0] == 0u) && (g_lis_req_n == 0),
+          "TC-NETPEND-013b 不自动重开的 socket 不会被偷偷要求重建监听");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_CLOSED);
+    g_socks[0].released_abnormal = 1u;
+    (void)net_pending_register(0, g_rbuf, 20, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_tick(g_socks);
+    CHECK(g_notify_value[0] == (uint32_t)NET_ERR_CONNRESET,
+          "TC-NETPEND-014 异常释放报 CONNRESET 而不是 0（调用方要能分辨好坏收尾）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    g_socks[0].session_dead = 1u;
+    (void)net_pending_register(0, g_rbuf, 20, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_tick(g_socks);
+    CHECK((g_notify_n == 1) && (g_lis_req_n == 1),
+          "TC-NETPEND-015 session_dead 与 CLOSED 同路（状态滞后时仍能收口）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_pending_register(0, g_rbuf, 10, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_cancel(0, NET_ERR_CONNRESET);
+    CHECK((g_notify_value[0] == (uint32_t)NET_ERR_CONNRESET) &&
+          (g_errno_last == NET_ERR_CONNRESET) && (s_net_pending[0].active == 0u),
+          "TC-NETPEND-016 取消：错误码经通知值送达并解除挂起");
+    net_pending_cancel(0, NET_ERR_CONNRESET);
+    CHECK(g_notify_n == 1, "TC-NETPEND-016b 重复取消幂等（不给同一任务发两次通知）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    mk_sock(2, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_pending_register(0, g_rbuf, 10, 500u, (TaskHandle_t)&g_caller_obj);
+    (void)net_pending_register(2, g_rbuf, 10, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_cancel_all(NET_ERR_CONNRESET);
+    CHECK((g_notify_n == 2) && (s_net_pending[0].active == 0u) &&
+          (s_net_pending[2].active == 0u),
+          "TC-NETPEND-017 cancel_all 只通知挂着的那两个（网络整体复位时用）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_pending_register(0, g_rbuf, 10, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_clear(0);
+    CHECK((s_net_pending[0].active == 0u) && (g_notify_n == 0),
+          "TC-NETPEND-018 clear 只解除挂起、不发通知（不给调用方假答复）");
+}
+
+static void tc_settle_close(void)
+{
+    int before;
+
+    printf("-- TC-NETPEND-019..021 settle_close --\n");
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_CLOSED);
+    before = g_chip.read_calls + g_chip.get_status_calls;
+    net_pending_settle_close(0, &g_socks[0]);
+    CHECK((g_chip.read_calls + g_chip.get_status_calls) == before,
+          "TC-NETPEND-019 没挂起时直接返回（不打扰芯片）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_CLOSED);
+    (void)net_pending_register(0, g_rbuf, 20, 500u, (TaskHandle_t)&g_caller_obj);
+    ch395f_fake_push_recv_len(0, 7u);
+    net_pending_settle_close(0, &g_socks[0]);
+    CHECK((g_notify_value[0] == 7u) && (g_socks[0].recv_bytes == 7u) &&
+          (g_socks[0].readable == 0u),
+          "TC-NETPEND-020 收尾时把剩余字节读走并交还字节数（收口不丢数据）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_CLOSED);
+    (void)net_pending_register(0, g_rbuf, 20, 500u, (TaskHandle_t)&g_caller_obj);
+    net_pending_settle_close(0, &g_socks[0]);
+    CHECK(g_notify_value[0] == (uint32_t)NET_ERR_CONNRESET,
+          "TC-NETPEND-021 无残留则报 CONNRESET（关闭收尾不该被当成读到 0 字节）");
+}
+
+static void tc_send_paths(void)
+{
+    int rc;
+
+    printf("-- TC-NETPEND-030..040 send pending --\n");
+    reset_all();
+    rc = net_send_pending_register(-1, g_wbuf, 100, 0, (TaskHandle_t)&g_caller_obj);
+    CHECK((rc == -1) && (g_errno_last == NET_ERR_BADF), "TC-NETPEND-030 越界 fd 报 BADF");
+    rc = net_send_pending_register(0, NULL, 100, 0, (TaskHandle_t)&g_caller_obj);
+    CHECK(g_errno_last == NET_ERR_INVAL, "TC-NETPEND-030b buf 为空报 INVAL");
+    rc = net_send_pending_register(0, g_wbuf, 0, 0, (TaskHandle_t)&g_caller_obj);
+    CHECK(g_errno_last == NET_ERR_INVAL, "TC-NETPEND-030c len 非正报 INVAL");
+    rc = net_send_pending_register(0, g_wbuf, 100, -1, (TaskHandle_t)&g_caller_obj);
+    CHECK(g_errno_last == NET_ERR_INVAL, "TC-NETPEND-030d sent 为负报 INVAL");
+    rc = net_send_pending_register(0, g_wbuf, 100, 100, (TaskHandle_t)&g_caller_obj);
+    CHECK((g_errno_last == NET_ERR_INVAL) && (s_net_send[0].active == 0u),
+          "TC-NETPEND-030e sent>=len 报 INVAL（已发完的不必挂）");
+    rc = net_send_pending_register(0, g_wbuf, 100, 50, NULL);
+    CHECK(g_errno_last == NET_ERR_BUSY, "TC-NETPEND-031 caller 为空报 BUSY");
+    rc = net_send_pending_register(0, g_wbuf, 100, 50, (TaskHandle_t)&g_owner_obj);
+    CHECK(g_errno_last == NET_ERR_BUSY, "TC-NETPEND-031b 属主自己发报 BUSY");
+    rc = net_send_pending_register(0, g_wbuf, 100, 50, (TaskHandle_t)&g_caller_obj);
+    CHECK(rc == NET_PENDING_REGISTERED, "TC-NETPEND-032 挂起发送注册成功");
+    rc = net_send_pending_register(0, g_wbuf, 100, 50, (TaskHandle_t)&g_caller_obj);
+    CHECK(g_errno_last == NET_ERR_BUSY, "TC-NETPEND-031c 同 fd 只允许一条挂起发送");
+
+    reset_all();
+    (void)net_send_pending_register(0, g_wbuf, 3000, 700, (TaskHandle_t)&g_caller_obj);
+    g_socks[0].in_use = 0u;
+    net_send_pending_tick(g_socks);
+    CHECK((g_notify_n == 1) && (g_notify_value[0] == 700u),
+          "TC-NETPEND-033 槽位消失回**已发字节数**（不是错误码，调用方据此算进度）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_CLOSED);
+    (void)net_send_pending_register(0, g_wbuf, 3000, 700, (TaskHandle_t)&g_caller_obj);
+    net_send_pending_tick(g_socks);
+    CHECK((g_npd_error_count == 1) && (g_errno_last == NET_ERR_CONNRESET) &&
+          (g_notify_value[0] == 700u),
+          "TC-NETPEND-034 会话塌了：留 ERROR + 报 CONNRESET，但仍把已发字节交回去");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    g_socks[0].send_ready = 1u;
+    (void)net_send_pending_register(0, g_wbuf, 3000, 0, (TaskHandle_t)&g_caller_obj);
+    net_send_pending_tick(g_socks);
+    CHECK((g_chip.write_calls == 1) &&
+          (g_chip.last_read_len == (uint16_t)NET_SEND_CHUNK_MAX) &&
+          (g_socks[0].send_bytes == (uint32_t)NET_SEND_CHUNK_MAX) &&
+          (g_socks[0].send_ready == 0u) && (s_net_send[0].active == 1u),
+          "TC-NETPEND-035 单次写入钳在 NET_SEND_CHUNK_MAX（芯片发送缓冲上界）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_send_pending_register(0, g_wbuf, 3000, 0, (TaskHandle_t)&g_caller_obj);
+    g_socks[0].send_ready = 1u;
+    net_send_pending_tick(g_socks);
+    g_socks[0].send_ready = 1u;
+    net_send_pending_tick(g_socks);
+    g_socks[0].send_ready = 1u;
+    net_send_pending_tick(g_socks);
+    CHECK((g_notify_value[0] == 3000u) && (s_net_send[0].active == 0u) &&
+          (g_chip.write_calls == 3),
+          "TC-NETPEND-036 分三块发完 3000 字节后交还总长度");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_send_pending_register(0, g_wbuf, 3000, 0, (TaskHandle_t)&g_caller_obj);
+    g_now = 1900u;
+    g_socks[0].send_ready = 1u;
+    net_send_pending_tick(g_socks);
+    g_now = 2800u;
+    g_socks[0].send_ready = 1u;
+    net_send_pending_tick(g_socks);
+    CHECK((g_npd_error_count == 0) && (s_net_send[0].active == 1u) &&
+          (g_chip.write_calls == 2),
+          "TC-NETPEND-038 每写一轮续期 deadline：还在推进就不该被 1000ms 掐死");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_send_pending_register(0, g_wbuf, 3000, 0, (TaskHandle_t)&g_caller_obj);
+    g_now = 2000u;
+    net_send_pending_tick(g_socks);
+    CHECK((g_npd_error_count == 1) && (g_errno_last == NET_ERR_TIMEDOUT) &&
+          (g_notify_value[0] == 0u),
+          "TC-NETPEND-037 停滞超时报 TIMEDOUT（对端不收时不能永久占着发送通道）");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_send_pending_register(0, g_wbuf, 100, 40, (TaskHandle_t)&g_caller_obj);
+    net_send_pending_cancel(0, NET_ERR_CONNRESET);
+    CHECK((g_npd_error_count == 1) && (g_errno_last == NET_ERR_CONNRESET) &&
+          (g_notify_value[0] == 40u) && (s_net_send[0].active == 0u),
+          "TC-NETPEND-039 取消挂起发送：留痕 + 交还已发字节");
+    net_send_pending_cancel(0, NET_ERR_CONNRESET);
+    CHECK(g_notify_n == 1, "TC-NETPEND-039b 重复取消幂等");
+
+    reset_all();
+    mk_sock(0, NET_SOCK_STATE_ESTABLISHED);
+    (void)net_send_pending_register(0, g_wbuf, 100, 40, (TaskHandle_t)&g_caller_obj);
+    net_send_pending_clear(0);
+    CHECK((s_net_send[0].active == 0u) && (g_notify_n == 0),
+          "TC-NETPEND-040 clear 不发通知（与 recv 侧同一条纪律）");
+}
+
+int main(void)
+{
+    printf("=== NET Pending Tests ===\n");
+
+    tc_recv_register();
+    tc_recv_paths();
+    tc_settle_close();
+    tc_send_paths();
+
+    printf("\n=== NET Pending Tests: %d/%d PASSED (failed=%d) ===\n",
+           s_passed, s_total, s_failed);
+    return (s_failed == 0) ? 0 : 1;
+}