--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/test-tcp-write-after-connect.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,77 @@
+/* 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.
+ */
+
+#ifndef _WIN32
+
+#include "uv.h"
+#include "task.h"
+
+uv_loop_t loop;
+uv_tcp_t tcp_client;
+uv_connect_t connection_request;
+uv_write_t write_request;
+uv_buf_t buf = { "HELLO", 4 };
+
+
+static void write_cb(uv_write_t *req, int status) {
+  ASSERT_EQ(status, UV_ECANCELED);
+  uv_close((uv_handle_t*) req->handle, NULL);
+}
+
+
+static void connect_cb(uv_connect_t *req, int status) {
+  ASSERT_EQ(status, UV_ECONNREFUSED);
+}
+
+
+TEST_IMPL(tcp_write_after_connect) {
+/* TODO(gengjiawen): Fix test on QEMU. */
+#if defined(__QEMU__)
+  RETURN_SKIP("Test does not currently work in QEMU");
+#endif
+
+  struct sockaddr_in sa;
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &sa));
+  ASSERT_OK(uv_loop_init(&loop));
+  ASSERT_OK(uv_tcp_init(&loop, &tcp_client));
+
+  ASSERT_OK(uv_tcp_connect(&connection_request,
+                           &tcp_client,
+                           (const struct sockaddr *)
+                           &sa,
+                           connect_cb));
+
+  ASSERT_OK(uv_write(&write_request,
+                     (uv_stream_t *)&tcp_client,
+                     &buf, 1,
+                     write_cb));
+
+  uv_run(&loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(&loop);
+  return 0;
+}
+
+#else
+
+typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
+
+#endif /* !_WIN32 */