--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/run-tests.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,269 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef _WIN32
+# include <io.h>
+# define read _read
+#else
+# include <unistd.h>
+#endif
+
+#include "uv.h"
+#include "runner.h"
+#include "task.h"
+
+/* Actual tests and helpers are defined in test-list.h */
+#include "test-list.h"
+
+#ifdef __MVS__
+#include "zos-base.h"
+/* Initialize environment and zoslib */
+__attribute__((constructor)) void init() {
+  zoslib_config_t config;
+  init_zoslib_config(&config);
+  init_zoslib(config);
+}
+#endif
+
+int ipc_helper(int listen_after_write);
+int ipc_helper_heavy_traffic_deadlock_bug(void);
+int ipc_helper_tcp_connection(void);
+int ipc_send_recv_helper(void);
+int ipc_helper_bind_twice(void);
+int ipc_helper_send_zero(void);
+int stdio_over_pipes_helper(void);
+void spawn_stdin_stdout(void);
+void process_title_big_argv(void);
+int spawn_tcp_server_helper(void);
+
+static int maybe_run_test(int argc, char **argv);
+
+#ifdef _WIN32
+typedef BOOL (WINAPI *sCompareObjectHandles)(_In_ HANDLE, _In_ HANDLE);
+#endif
+
+
+int main(int argc, char **argv) {
+#ifndef _WIN32
+  if (0 == geteuid() && NULL == getenv("UV_RUN_AS_ROOT")) {
+    fprintf(stderr, "The libuv test suite cannot be run as root.\n");
+    return EXIT_FAILURE;
+  }
+#endif
+
+  platform_init(argc, argv);
+  argv = uv_setup_args(argc, argv);
+
+  switch (argc) {
+  case 1: return run_tests(0);
+  case 2: return maybe_run_test(argc, argv);
+  case 3: return run_test_part(argv[1], argv[2]);
+  case 4: return maybe_run_test(argc, argv);
+  default:
+    fprintf(stderr, "Too many arguments.\n");
+    fflush(stderr);
+    return EXIT_FAILURE;
+  }
+}
+
+
+static int maybe_run_test(int argc, char **argv) {
+  if (strcmp(argv[1], "--list") == 0) {
+    print_tests(stdout);
+    return 0;
+  }
+
+  if (strcmp(argv[1], "ipc_helper_listen_before_write") == 0) {
+    return ipc_helper(0);
+  }
+
+  if (strcmp(argv[1], "ipc_helper_listen_after_write") == 0) {
+    return ipc_helper(1);
+  }
+
+  if (strcmp(argv[1], "ipc_helper_heavy_traffic_deadlock_bug") == 0) {
+    return ipc_helper_heavy_traffic_deadlock_bug();
+  }
+
+  if (strcmp(argv[1], "ipc_send_recv_helper") == 0) {
+    return ipc_send_recv_helper();
+  }
+
+  if (strcmp(argv[1], "ipc_helper_tcp_connection") == 0) {
+    return ipc_helper_tcp_connection();
+  }
+
+  if (strcmp(argv[1], "ipc_helper_bind_twice") == 0) {
+    return ipc_helper_bind_twice();
+  }
+
+  if (strcmp(argv[1], "ipc_helper_send_zero") == 0) {
+    return ipc_helper_send_zero();
+  }
+
+  if (strcmp(argv[1], "stdio_over_pipes_helper") == 0) {
+    return stdio_over_pipes_helper();
+  }
+
+  if (strcmp(argv[1], "spawn_helper1") == 0) {
+    notify_parent_process();
+    return 1;
+  }
+
+  if (strcmp(argv[1], "spawn_helper2") == 0) {
+    notify_parent_process();
+    printf("hello world\n");
+    return 1;
+  }
+
+  if (strcmp(argv[1], "spawn_tcp_server_helper") == 0) {
+    notify_parent_process();
+    return spawn_tcp_server_helper();
+  }
+
+  if (strcmp(argv[1], "spawn_helper3") == 0) {
+    char buffer[256];
+    notify_parent_process();
+    ASSERT_PTR_EQ(buffer, fgets(buffer, sizeof(buffer) - 1, stdin));
+    buffer[sizeof(buffer) - 1] = '\0';
+    fputs(buffer, stdout);
+    return 1;
+  }
+
+  if (strcmp(argv[1], "spawn_helper4") == 0) {
+    notify_parent_process();
+    /* Never surrender, never return! */
+    for (;;) uv_sleep(10000);
+  }
+
+  if (strcmp(argv[1], "spawn_helper5") == 0) {
+    const char out[] = "fourth stdio!\n";
+    notify_parent_process();
+    {
+#ifdef _WIN32
+      DWORD bytes;
+      WriteFile((HANDLE) _get_osfhandle(3), out, sizeof(out) - 1, &bytes, NULL);
+#else
+      ssize_t r;
+
+      do
+        r = write(3, out, sizeof(out) - 1);
+      while (r == -1 && errno == EINTR);
+
+      fsync(3);
+#endif
+    }
+    return 1;
+  }
+
+  if (strcmp(argv[1], "spawn_helper6") == 0) {
+    int r;
+
+    notify_parent_process();
+
+    r = fprintf(stdout, "hello world\n");
+    ASSERT_GT(r, 0);
+
+    r = fprintf(stderr, "hello errworld\n");
+    ASSERT_GT(r, 0);
+
+    return 1;
+  }
+
+  if (strcmp(argv[1], "spawn_helper7") == 0) {
+    int r;
+    char *test;
+
+    notify_parent_process();
+
+    /* Test if the test value from the parent is still set */
+    test = getenv("ENV_TEST");
+    ASSERT_NOT_NULL(test);
+
+    r = fprintf(stdout, "%s", test);
+    ASSERT_GT(r, 0);
+
+    return 1;
+  }
+
+  if (strcmp(argv[1], "spawn_helper8") == 0) {
+    uv_os_fd_t closed_fd;
+    uv_os_fd_t open_fd;
+#ifdef _WIN32
+    DWORD flags;
+    HMODULE kernelbase_module;
+    sCompareObjectHandles pCompareObjectHandles; /* function introduced in Windows 10 */
+#endif
+    notify_parent_process();
+    ASSERT_EQ(sizeof(closed_fd), read(0, &closed_fd, sizeof(closed_fd)));
+    ASSERT_EQ(sizeof(open_fd), read(0, &open_fd, sizeof(open_fd)));
+#ifdef _WIN32
+    ASSERT_GT((intptr_t) closed_fd, 0);
+    ASSERT_GT((intptr_t) open_fd, 0);
+    ASSERT_NE(0, GetHandleInformation(open_fd, &flags));
+    kernelbase_module = GetModuleHandleA("kernelbase.dll");
+    pCompareObjectHandles = (sCompareObjectHandles)
+        GetProcAddress(kernelbase_module, "CompareObjectHandles");
+    ASSERT_NE(pCompareObjectHandles == NULL || \
+              !pCompareObjectHandles(open_fd, closed_fd), 0);
+#else
+    ASSERT_GT(open_fd, 2);
+    ASSERT_GT(closed_fd, 2);
+# if defined(__PASE__)  /* On IBMi PASE, write() returns 1 */
+    ASSERT_EQ(1, write(closed_fd, "x", 1));
+# else
+    ASSERT_EQ(-1, write(closed_fd, "x", 1));
+# endif  /* !__PASE__ */
+#endif
+    return 1;
+  }
+
+  if (strcmp(argv[1], "spawn_helper9") == 0) {
+    notify_parent_process();
+    spawn_stdin_stdout();
+    return 1;
+  }
+
+#ifndef _WIN32
+  if (strcmp(argv[1], "spawn_helper_setuid_setgid") == 0) {
+    uv_uid_t uid = atoi(argv[2]);
+    uv_gid_t gid = atoi(argv[3]);
+
+    ASSERT_EQ(uid, getuid());
+    ASSERT_EQ(gid, getgid());
+    notify_parent_process();
+
+    return 1;
+  }
+#endif  /* !_WIN32 */
+
+  if (strcmp(argv[1], "process_title_big_argv_helper") == 0) {
+    notify_parent_process();
+    process_title_big_argv();
+    return 0;
+  }
+
+  return run_test(argv[1], 0, 1);
+}