X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=tests%2Ftest-read-file.c;h=423b19e3a866a53520b1d7fd1b59a7c611c96387;hb=fb2f5965e0863b2c8df0e148eb1ad02ec2079817;hp=1e90cd4566ef38188b5067b3800f50992d1ef6de;hpb=08c03e591ea25f38405e5e06f1565e01feabb591;p=gnulib.git

diff --git a/tests/test-read-file.c b/tests/test-read-file.c
index 1e90cd456..423b19e3a 100644
--- a/tests/test-read-file.c
+++ b/tests/test-read-file.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006 Free Software Foundation
+ * Copyright (C) 2006-2007 Free Software Foundation
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
@@ -24,6 +24,8 @@
 #include "read-file.h"
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
 
 #define FILE1 "/etc/resolv.conf"
 #define FILE2 "/dev/null"
@@ -31,35 +33,69 @@
 int
 main (void)
 {
-  {
-    size_t len;
-    char *out = read_file (FILE1, &len);
+  struct stat statbuf;
+  int err = 0;
 
-    if (!out)
-      perror ("Could not read file");
+  /* We can perform the test only if the file exists and is readable.
+     Test whether it exists, then assume it is world-readable.  */
+  if (stat (FILE1, &statbuf) >= 0)
+    {
+      size_t len;
+      char *out = read_file (FILE1, &len);
 
-    if (out[len] != '\0')
-      perror ("BAD: out[len] not zero");
+      if (!out)
+        {
+	  perror ("Could not read file");
+	  err = 1;
+	}
+      else
+	{
+	  if (out[len] != '\0')
+	    {
+	      perror ("BAD: out[len] not zero");
+	      err = 1;
+	    }
 
-    printf ("Read %d from %s...\n", len, FILE1);
+	  /* Assume FILE1 is a regular file or a symlink to a regular file.  */
+	  if (len != statbuf.st_size)
+	    {
+	      fprintf (stderr, "Read %ld from %s...\n", (unsigned long) len, FILE1);
+	      err = 1;
+	    }
+	  free (out);
+	}
+    }
 
-    free (out);
-  }
+  /* We can perform the test only if the file exists and is readable.
+     Test whether it exists, then assume it is world-readable.  */
+  if (stat (FILE2, &statbuf) >= 0)
+    {
+      size_t len;
+      char *out = read_file (FILE2, &len);
 
-  {
-    size_t len;
-    char *out = read_file (FILE2, &len);
+      if (!out)
+        {
+	  perror ("Could not read file");
+	  err = 1;
+	}
+      else
+	{
+	  if (out[len] != '\0')
+	    {
+	      perror ("BAD: out[len] not zero");
+	      err = 1;
+	    }
 
-    if (!out)
-      perror ("Could not read file");
+	  /* /dev/null should always be empty.  Ignore statbuf.st_size, since it
+	     is not a regular file.  */
+	  if (len != 0)
+	    {
+	      fprintf (stderr, "Read %ld from %s...\n", (unsigned long) len, FILE2);
+	      err = 1;
+	    }
+	  free (out);
+	}
+    }
 
-    if (out[len] != '\0')
-      perror ("BAD: out[len] not zero");
-
-    printf ("Read %d from %s...\n", len, FILE2);
-
-    free (out);
-  }
-
-  return 0;
+  return err;
 }