* MODULES.html.sh: Add include_next.

[gnulib.git] / tests / test-read-file.c

diff --git a/tests/test-read-file.c b/tests/test-read-file.c
index 635c4cb..f904e27 100644 (file)
--- 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
@@ -17,14 +17,13 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  * 02110-1301, USA.  */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include "read-file.h"
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/stat.h>
 
 #define FILE1 "/etc/resolv.conf"
 #define FILE2 "/dev/null"
@@ -32,35 +31,69 @@
 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;
 }