printf-gnu: Add tests.

* tests/test-printf-gnu.sh: New file, based on
tests/test-printf-posix.sh.
* tests/test-printf-gnu.c: New file, based on tests/test-printf-posix.c.
* modules/printf-gnu-tests: New file, based on
modules/printf-posix-tests.

ChangeLog

@@ -1,5 +1,12 @@
 2023-03-24  Bruno Haible  <bruno@clisp.org>
 
+	printf-gnu: Add tests.
+	* tests/test-printf-gnu.sh: New file, based on
+	tests/test-printf-posix.sh.
+	* tests/test-printf-gnu.c: New file, based on tests/test-printf-posix.c.
+	* modules/printf-gnu-tests: New file, based on
+	modules/printf-posix-tests.
+
 	printf-gnu: New module.
 	* m4/printf-posix.m4: Renamed from m4/printf-posix-rpl.m4.
 	(gl_FUNC_PRINTF_IS_POSIX): New macro.

modules/printf-gnu-tests

@@ -0,0 +1,15 @@
+Files:
+tests/test-printf-gnu.sh
+tests/test-printf-gnu.c
+tests/test-printf-gnu.h
+tests/test-printf-gnu.output
+tests/macros.h
+
+Depends-on:
+printf-posix-tests
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-printf-gnu.sh
+check_PROGRAMS += test-printf-gnu

tests/test-printf-gnu.c

@@ -0,0 +1,35 @@
+/* Test of POSIX and GNU compatible printf() function.
+   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 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 <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <stddef.h>
+#include <string.h>
+
+#include "macros.h"
+
+#include "test-printf-gnu.h"
+
+int
+main (int argc, char *argv[])
+{
+  test_function (printf);
+  return 0;
+}

tests/test-printf-gnu.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+tmpfiles=""
+trap 'rm -fr $tmpfiles' HUP INT QUIT TERM
+
+tmpfiles="$tmpfiles t-printf-gnu.tmp t-printf-gnu.out"
+${CHECKER} ./test-printf-gnu${EXEEXT} > t-printf-gnu.tmp || exit 1
+LC_ALL=C tr -d '\r' < t-printf-gnu.tmp > t-printf-gnu.out || exit 1
+
+: "${DIFF=diff}"
+${DIFF} "${srcdir}/test-printf-gnu.output" t-printf-gnu.out
+result=$?
+
+rm -fr $tmpfiles
+
+exit $result