pty tests: Add C tests.

* modules/pty-tests (Files): Add tests/test-pty.c.
(Makefile.am): Add the new program.
* tests/test-pty.c: New file.

ChangeLog

@@ -1,5 +1,10 @@
 2024-08-16  Collin Funk  <collin.funk1@gmail.com>
 
+	pty tests: Add C tests.
+	* modules/pty-tests (Files): Add tests/test-pty.c.
+	(Makefile.am): Add the new program.
+	* tests/test-pty.c: New file.
+
 	pty: Define 'struct winsize' on all platforms.
 	* modules/pty (Depends-on): Add termios.
 	* lib/pty.in.h: Make comments more accurate.

modules/pty-tests

@@ -1,4 +1,5 @@
 Files:
+tests/test-pty.c
 
 Depends-on:
 pty-c++-tests
@@ -6,3 +7,5 @@ pty-c++-tests
 configure.ac:
 
 Makefile.am:
+TESTS += test-pty
+check_PROGRAMS += test-pty

tests/test-pty.c

@@ -0,0 +1,31 @@
+/* Test of <pty.h> substitute.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+
+   This file 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 file 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 Collin Funk <collin.funk1@gmail.com>, 2024.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <pty.h>
+
+/* Check for 'struct winsize'.  */
+struct winsize t1;
+
+int
+main (void)
+{
+  return 0;
+}