maint: update copyright

[gnulib.git] / tests / test-getlogin.c

diff --git a/tests/test-getlogin.c b/tests/test-getlogin.c
index 6589289..197aed8 100644 (file)
--- a/tests/test-getlogin.c
+++ b/tests/test-getlogin.c
@@ -1,5 +1,5 @@
 /* Test of getting user name.
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010-2014 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
@@ -23,6 +23,8 @@
 #include "signature.h"
 SIGNATURE_CHECK (getlogin, char *, (void));
 
+#include <errno.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -35,7 +37,26 @@ main (void)
 
   /* Test value.  */
   buf = getlogin ();
-  ASSERT (buf != NULL);
+  if (buf == NULL)
+    {
+      if (errno == ENOENT)
+        {
+          /* This can happen on GNU/Linux.  */
+          fprintf (stderr, "Skipping test: no entry in utmp file.\n");
+          return 77;
+        }
+
+      /* getlogin() fails when stdin is not connected to a tty.  */
+      ASSERT (errno == ENOTTY
+              || errno == EINVAL /* seen on Linux/SPARC */
+              || errno == 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");
+      return 77;
+    }
 
   /* Compare against the value from the environment.  */
 #if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)