1 files changed, 92 insertions, 0 deletions
diff --git a/gnulib-tests/test-getlogin.h b/gnulib-tests/test-getlogin.h
new file mode 100644
index 0000000..a11b80e
--- /dev/null
+++ b/gnulib-tests/test-getlogin.h
@@ -0,0 +1,92 @@
+/* Test of getting user name.
+   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible and Paul Eggert.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#if !(defined _WIN32 && !defined __CYGWIN__)
+# include <pwd.h>
+#endif
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "macros.h"
+
+static void
+test_getlogin_result (const char *buf, int err)
+{
+  if (err != 0)
+    {
+      if (err == ENOENT)
+        {
+          /* This can happen on GNU/Linux.  */
+          fprintf (stderr, "Skipping test: no entry in utmp file.\n");
+          exit (77);
+        }
+
+      /* It fails when stdin is not connected to a tty.  */
+      ASSERT (err == ENOTTY
+              || err == EINVAL /* seen on Linux/SPARC */
+              || err == ENXIO
+             );
+#if !defined __hpux /* On HP-UX 11.11 it fails anyway.  */
+      ASSERT (! isatty (0));
+#endif
+      fprintf (stderr, "Skipping test: stdin is not a tty.\n");
+      exit (77);
+    }
+
+  /* Compare against the value from the environment.  */
+#if !(defined _WIN32 && !defined __CYGWIN__)
+  /* Unix platform */
+  {
+    struct stat stat_buf;
+    struct passwd *pwd;
+
+    if (!isatty (STDIN_FILENO))
+      {
+         fprintf (stderr, "Skipping test: stdin is not a tty.\n");
+         exit (77);
+      }
+
+    ASSERT (fstat (STDIN_FILENO, &stat_buf) == 0);
+
+    pwd = getpwnam (buf);
+    if (! pwd)
+      {
+        fprintf (stderr, "Skipping test: %s: no such user\n", buf);
+        exit (77);
+      }
+
+    ASSERT (pwd->pw_uid == stat_buf.st_uid);
+  }
+#endif
+#if defined _WIN32 && !defined __CYGWIN__
+  /* Native Windows platform.
+     Note: This test would fail on Cygwin in an ssh session, because sshd
+     sets USERNAME=SYSTEM.  */
+  {
+    const char *name = getenv ("USERNAME");
+    if (name != NULL && name[0] != '\0')
+      ASSERT (strcmp (buf, name) == 0);
+  }
+#endif
+}