--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/test-gethostname.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,58 @@
+/* Copyright libuv 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 "uv.h"
+#include "task.h"
+#include <string.h>
+
+TEST_IMPL(gethostname) {
+  char buf[UV_MAXHOSTNAMESIZE];
+  size_t size;
+  size_t enobufs_size;
+  int r;
+
+  /* Reject invalid inputs */
+  size = 1;
+  r = uv_os_gethostname(NULL, &size);
+  ASSERT_EQ(r, UV_EINVAL);
+  r = uv_os_gethostname(buf, NULL);
+  ASSERT_EQ(r, UV_EINVAL);
+  size = 0;
+  r = uv_os_gethostname(buf, &size);
+  ASSERT_EQ(r, UV_EINVAL);
+
+  /* Return UV_ENOBUFS if the buffer cannot hold the hostname */
+  enobufs_size = 1;
+  buf[0] = '\0';
+  r = uv_os_gethostname(buf, &enobufs_size);
+  ASSERT_EQ(r, UV_ENOBUFS);
+  ASSERT_EQ(buf[0], '\0');
+  ASSERT_GT(enobufs_size, 1);
+
+  /* Successfully get the hostname */
+  size = UV_MAXHOSTNAMESIZE;
+  r = uv_os_gethostname(buf, &size);
+  ASSERT_OK(r);
+  ASSERT(size > 0 && size == strlen(buf));
+  ASSERT_EQ(size + 1, enobufs_size);
+
+  return 0;
+}