error: depend on stdio

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

diff --git a/tests/test-freadptr.c b/tests/test-freadptr.c
index 5c5e41e..8d496bc 100644 (file)
--- a/tests/test-freadptr.c
+++ b/tests/test-freadptr.c
@@ -1,5 +1,5 @@
 /* Test of freadptr() function.
-   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 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
@@ -20,23 +20,11 @@
 
 #include "freadptr.h"
 
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
-#include "freadahead.h"
-
-#define ASSERT(expr) \
-  do                                                                        \
-    {                                                                       \
-      if (!(expr))                                                          \
-        {                                                                   \
-          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
-          abort ();                                                         \
-        }                                                                   \
-    }                                                                       \
-  while (0)
+#include "macros.h"
 
 int
 main (int argc, char **argv)
@@ -46,19 +34,60 @@ main (int argc, char **argv)
   ASSERT (fread (buf, 1, nbytes, stdin) == nbytes);
 
   if (lseek (0, 0, SEEK_CUR) == nbytes)
-    /* An unbuffered stdio, such as BeOS or on uClibc compiled without
-       __STDIO_BUFFERS.  */
-    ASSERT (freadahead (stdin) == 0);
+    {
+      /* An unbuffered stdio, such as BeOS or on uClibc compiled without
+         __STDIO_BUFFERS.  Or stdin is a pipe.  */
+      size_t size;
+      ASSERT (freadptr (stdin, &size) == NULL);
+    }
   else
     {
       /* Normal buffered stdio.  */
       const char stdin_contents[] =
-       "#!/bin/sh\n\n./test-freadptr${EXEEXT} 5 < \"$srcdir/test-freadptr.sh\" || exit 1\nexit 0\n";
+        "#!/bin/sh\n\n./test-freadptr${EXEEXT} 5 < \"$srcdir/test-freadptr.sh\" || exit 1\ncat \"$srcdir/test-freadptr.sh\" | ./test-freadptr${EXEEXT} 5 || exit 1\nexit 0\n";
       const char *expected = stdin_contents + nbytes;
-      size_t available = freadahead (stdin);
-      ASSERT (available != 0);
-      ASSERT (available <= strlen (expected));
-      ASSERT (memcmp (freadptr (stdin), expected, available) == 0);
+      size_t available1;
+      size_t available2;
+      size_t available3;
+
+      /* Test normal behaviour.  */
+      {
+        const char *ptr = freadptr (stdin, &available1);
+
+        ASSERT (ptr != NULL);
+        ASSERT (available1 != 0);
+        ASSERT (available1 <= strlen (expected));
+        ASSERT (memcmp (ptr, expected, available1) == 0);
+      }
+
+      /* Test behaviour after normal ungetc.  */
+      ungetc (fgetc (stdin), stdin);
+      {
+        const char *ptr = freadptr (stdin, &available2);
+
+        if (ptr != NULL)
+          {
+            ASSERT (available2 == available1);
+            ASSERT (memcmp (ptr, expected, available2) == 0);
+          }
+      }
+
+      /* Test behaviour after arbitrary ungetc.  */
+      fgetc (stdin);
+      ungetc ('@', stdin);
+      {
+        const char *ptr = freadptr (stdin, &available3);
+
+        if (ptr != NULL)
+          {
+            ASSERT (available3 == 1 || available3 == available1);
+            ASSERT (ptr[0] == '@');
+            if (available3 > 1)
+              {
+                ASSERT (memcmp (ptr + 1, expected + 1, available3 - 1) == 0);
+              }
+          }
+      }
     }
 
   return 0;