X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-freadahead.c;h=c369cbafd1bbd490dd8165e88e8bb50612269e3d;hb=c26924950a3a546112e35c99aad85c0855f4664a;hp=d4b098a45b21eeac43337ae8881fdc997f1762f5;hpb=57fdfd3f8ec62b105c53bcdf6f127c35c7fe7391;p=gnulib.git

diff --git a/tests/test-freadahead.c b/tests/test-freadahead.c
index d4b098a45..c369cbafd 100644
--- a/tests/test-freadahead.c
+++ b/tests/test-freadahead.c
@@ -1,5 +1,5 @@
 /* Test of freadahead() function.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2008 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
@@ -30,6 +30,7 @@
       if (!(expr))							     \
         {								     \
           fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+          fflush (stderr);						     \
           abort ();							     \
         }								     \
     }									     \
@@ -54,8 +55,29 @@ main (int argc, char **argv)
 	   __STDIO_BUFFERS.  */
 	ASSERT (freadahead (stdin) == 0);
       else
-	/* Normal buffered stdio.  */
-	ASSERT (freadahead (stdin) != 0);
+	{
+	  /* Normal buffered stdio.  */
+	  size_t buffered;
+	  int c, c2;
+
+	  ASSERT (freadahead (stdin) != 0);
+	  buffered = freadahead (stdin);
+
+	  c = fgetc (stdin);
+	  ASSERT (freadahead (stdin) == buffered - 1);
+	  ungetc (c, stdin);
+	  ASSERT (freadahead (stdin) == buffered);
+	  c2 = fgetc (stdin);
+	  ASSERT (c2 == c);
+	  ASSERT (freadahead (stdin) == buffered - 1);
+
+	  c = '@';
+	  ungetc (c, stdin);
+	  ASSERT (freadahead (stdin) == buffered);
+	  c2 = fgetc (stdin);
+	  ASSERT (c2 == c);
+	  ASSERT (freadahead (stdin) == buffered - 1);
+	}
     }
 
   return 0;