From fbd3fbba93628b8e747a53d49ad55e8436ad201d Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Wed, 13 Sep 2023 16:31:56 +0200
Subject: [PATCH] mbfile: Add tests.

* tests/test-mbfile.sh: New file.
* tests/test-mbfile.c: New file.
* modules/mbfile-tests: New file.
---
 ChangeLog            |  5 ++++
 modules/mbfile-tests | 14 ++++++++++
 tests/test-mbfile.c  | 66 ++++++++++++++++++++++++++++++++++++++++++++
 tests/test-mbfile.sh |  3 ++
 4 files changed, 88 insertions(+)
 create mode 100644 modules/mbfile-tests
 create mode 100644 tests/test-mbfile.c
 create mode 100755 tests/test-mbfile.sh

diff --git a/ChangeLog b/ChangeLog
index 10be2e2aad..1761f7a9bd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2023-09-13  Bruno Haible  <bruno@clisp.org>
 
+	mbfile: Add tests.
+	* tests/test-mbfile.sh: New file.
+	* tests/test-mbfile.c: New file.
+	* modules/mbfile-tests: New file.
+
 	mbfile: Fix major bug (regression 2023-07-04).
 	Reported by Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> in
 	<https://lists.gnu.org/archive/html/bug-gnulib/2023-09/msg00088.html>.
diff --git a/modules/mbfile-tests b/modules/mbfile-tests
new file mode 100644
index 0000000000..246702fc04
--- /dev/null
+++ b/modules/mbfile-tests
@@ -0,0 +1,14 @@
+Files:
+tests/test-mbfile.sh
+tests/test-mbfile.c
+tests/macros.h
+
+Depends-on:
+setlocale
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-mbfile.sh
+check_PROGRAMS += test-mbfile
+test_mbfile_LDADD = $(LDADD) $(LIBUNISTRING) $(SETLOCALE_LIB) $(MBRTOWC_LIB) $(LIBC32CONV)
diff --git a/tests/test-mbfile.c b/tests/test-mbfile.c
new file mode 100644
index 0000000000..0462390454
--- /dev/null
+++ b/tests/test-mbfile.c
@@ -0,0 +1,66 @@
+/* Test of multibyte character I/O.
+   Copyright (C) 2023 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2023.  */
+
+#include <config.h>
+
+#include "mbfile.h"
+
+#include <locale.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  if (setlocale (LC_ALL, "en_US.UTF-8") == NULL)
+    {
+      fprintf (stderr, "Skipping test: English Unicode locale is not installed\n");
+      return 77;
+    }
+
+  mb_file_t mbstdin;
+  mbf_init (mbstdin, stdin);
+  /* The input consists of 4 UTF-8 characters:
+     '$', U+00A5, U+20AC, U+0001F403.  */
+  mbf_char_t next;
+
+  mbf_getc (next, mbstdin);
+  ASSERT (!mb_iseof (next));
+  ASSERT (mb_len (next) == 1);
+  ASSERT (mb_iseq (next, 0x0024));
+
+  mbf_getc (next, mbstdin);
+  ASSERT (!mb_iseof (next));
+  ASSERT (mb_len (next) == 2);
+  ASSERT (mb_iseq (next, 0x00A5));
+
+  mbf_getc (next, mbstdin);
+  ASSERT (!mb_iseof (next));
+  ASSERT (mb_len (next) == 3);
+  ASSERT (mb_iseq (next, 0x20AC));
+
+  mbf_getc (next, mbstdin);
+  ASSERT (!mb_iseof (next));
+  ASSERT (mb_len (next) == 4);
+  ASSERT (mb_iseq (next, 0x1F403));
+
+  mbf_getc (next, mbstdin);
+  ASSERT (mb_iseof (next));
+
+  return 0;
+}
diff --git a/tests/test-mbfile.sh b/tests/test-mbfile.sh
new file mode 100755
index 0000000000..f2fa91239b
--- /dev/null
+++ b/tests/test-mbfile.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+printf '$\302\245\342\202\254\360\237\220\203' | ${CHECKER} ./test-mbfile${EXEEXT}
-- 
2.39.5