1 files changed, 62 insertions, 0 deletions
diff --git a/gnulib-tests/test-yesno.c b/gnulib-tests/test-yesno.c
new file mode 100644
index 0000000..2ed7bf6
--- /dev/null
+++ b/gnulib-tests/test-yesno.c
@@ -0,0 +1,62 @@
+/* Test of yesno module.
+   Copyright (C) 2007-2023 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, 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 <https://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+/* Specification.  */
+#include "yesno.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "closein.h"
+#include "binary-io.h"
+
+/* Test yesno.  Without arguments, read one line.  If first argument
+   is zero, close stdin before attempting to read one line.
+   Otherwise, read the number of lines specified by first
+   argument.  */
+int
+main (int argc, char **argv)
+{
+  int i = 1;
+
+  /* yesno recommends that all clients use close_stdin in main.  */
+  atexit (close_stdin);
+  /* But on mingw, close_stdin leaves stdin's file descriptor at the expected
+     position (i.e. where this program left off reading) only if its mode has
+     been set to O_BINARY.  If it has been set to O_TEXT, and the file
+     descriptor is seekable, and stdin is buffered, the MSVCRT runtime ends up
+     setting the file descriptor's position to the expected position _minus_
+     the number of LFs not preceded by CR that were read between the expected
+     position and the last filled buffer end position.  (I.e. the repositioning
+     from the end-of-buffer to the expected position does not work if the input
+     file contains end-of-line markers in Unix convention.)  */
+  set_binary_mode (0, O_BINARY);
+
+  if (1 < argc)
+    i = atoi (argv[1]);
+  if (!i)
+    {
+      i = 1;
+      close (0);
+    }
+  while (i--)
+    puts (yesno () ? "Y" : "N");
+  return 0;
+}