From 8ffec2a3aba6f114784e11f89ef1d57a096ae540 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 19:39:29 +0200 Subject: Adding upstream version 8.32. Signed-off-by: Daniel Baumann --- gnulib-tests/test-freadahead.c | 77 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 gnulib-tests/test-freadahead.c (limited to 'gnulib-tests/test-freadahead.c') diff --git a/gnulib-tests/test-freadahead.c b/gnulib-tests/test-freadahead.c new file mode 100644 index 0000000..a7042f1 --- /dev/null +++ b/gnulib-tests/test-freadahead.c @@ -0,0 +1,77 @@ +/* Test of freadahead() function. + Copyright (C) 2007-2020 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 + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +/* Written by Bruno Haible , 2007. */ + +#include + +#include "freadahead.h" + +#include +#include + +#include "macros.h" + +int +main (int argc, char **argv) +{ + int nbytes = atoi (argv[1]); + if (nbytes > 0) + { + void *buf = malloc (nbytes); + ASSERT (fread (buf, 1, nbytes, stdin) == nbytes); + free (buf); + } + + if (nbytes == 0) + ASSERT (freadahead (stdin) == 0); + else + { + if (lseek (0, 0, SEEK_CUR) == nbytes) + /* An unbuffered stdio, such as BeOS or on uClibc compiled without + __STDIO_BUFFERS. */ + ASSERT (freadahead (stdin) == 0); + else + { + /* 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); + } + } + + /* Free memory allocated during ungetc(). */ + fclose (stdin); + + return 0; +} -- cgit v1.2.3