X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=inline;f=tests%2Ftest-getlogin_r.c;h=88c1f323148a164dee7e2498939d5b785d2f701d;hb=10302c2e3cd5a04446a4c9fb4ece0beceed30373;hp=f716ab952b9a7663d35fa0933f7b775415bbd29c;hpb=dd5823d49cf74819742b51ff48044ebe1adbd834;p=gnulib.git

diff --git a/tests/test-getlogin_r.c b/tests/test-getlogin_r.c
index f716ab952..88c1f3231 100644
--- a/tests/test-getlogin_r.c
+++ b/tests/test-getlogin_r.c
@@ -1,5 +1,5 @@
 /* Test of getting user name.
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010-2013 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
@@ -24,6 +24,7 @@
 SIGNATURE_CHECK (getlogin_r, int, (char *, size_t));
 
 #include <errno.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -34,8 +35,29 @@ main (void)
 {
   /* Test with a large enough buffer.  */
   char buf[1024];
+  int err;
 
-  ASSERT (getlogin_r (buf, sizeof (buf)) == 0);
+  err = getlogin_r (buf, sizeof (buf));
+  if (err != 0)
+    {
+      if (errno == ENOENT)
+        {
+          /* This can happen on GNU/Linux.  */
+          fprintf (stderr, "Skipping test: no entry in utmp file.\n");
+          return 77;
+        }
+
+      /* getlogin_r() fails when stdin is not connected to a tty.  */
+      ASSERT (err == 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__)
@@ -66,7 +88,21 @@ main (void)
     size_t i;
 
     for (i = 0; i <= n; i++)
-      ASSERT (getlogin_r (smallbuf, i) == ERANGE);
+      {
+        err = getlogin_r (smallbuf, i);
+        if (i == 0)
+          ASSERT (err == ERANGE || err == EINVAL);
+        else
+          ASSERT (err == ERANGE);
+      }
+  }
+
+  /* Test with a huge buffer.  */
+  {
+    static char hugebuf[70000];
+
+    ASSERT (getlogin_r (hugebuf, sizeof (hugebuf)) == 0);
+    ASSERT (strcmp (hugebuf, buf) == 0);
   }
 
   return 0;