1 files changed, 93 insertions, 0 deletions
diff --git a/gl/tests/test-mbsalign.c b/gl/tests/test-mbsalign.c
new file mode 100644
index 000000000..9f8935732
--- /dev/null
+++ b/gl/tests/test-mbsalign.c
@@ -0,0 +1,93 @@
+/* Test that mbsalign works as advertised.
+   Copyright (C) 2010 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 <http://www.gnu.org/licenses/>.  */
+
+/* Written by Pádraig Brady.  */
+
+#include <config.h>
+
+#include "mbsalign.h"
+#include "macros.h"
+#include <stdlib.h>
+#include <locale.h>
+
+int
+main (void)
+{
+  char dest[4 * 16 + 1];
+  size_t width, n;
+
+  /* Test unibyte truncation.  */
+  width = 4;
+  n = mbsalign ("t\tés", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
+  ASSERT (n == 4);
+
+  /* Test center alignment.  */
+  width = 4;
+  n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER, 0);
+  ASSERT (*dest == ' ' && *(dest + n - 1) == ' ');
+
+  if (setlocale (LC_ALL, "en_US.UTF8"))
+    {
+      /* Check invalid input is flagged.  */
+      width = 4;
+      n = mbsalign ("t\xe1\xe2s", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (n == (size_t) -1);
+
+      /* Check invalid input is treated as unibyte  */
+      width = 4;
+      n = mbsalign ("t\xe1\xe2s", dest, sizeof dest, &width,
+                    MBS_ALIGN_LEFT, MBA_UNIBYTE_FALLBACK);
+      ASSERT (n == 4);
+
+      /* Test multibyte center alignment.  */
+      width = 4;
+      n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_CENTER, 0);
+      ASSERT (*dest == ' ' && *(dest + n - 1) == ' ');
+
+      /* Test multibyte left alignment.  */
+      width = 4;
+      n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (*(dest + n - 1) == ' ' && *(dest + n - 2) == ' ');
+
+      /* Test multibyte right alignment.  */
+      width = 4;
+      n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_RIGHT, 0);
+      ASSERT (*(dest) == ' ' && *(dest + 1) == ' ');
+
+      /* multibyte multicell truncation.  */
+      width = 4;                /* cells */
+      n = mbsalign ("日月火水", dest, sizeof dest, &width,
+                    MBS_ALIGN_LEFT, 0);
+      ASSERT (n == 6);          /* 2 characters */
+
+      /* multibyte unicell truncation.  */
+      width = 3;                /* cells */
+      n = mbsalign ("¹²³⁴", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (n == 6);          /* 3 characters */
+
+      /* Check independence from dest buffer. */
+      width = 4;                /* cells */
+      n = mbsalign ("¹²³⁴", dest, 0, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (n == 9);          /* 4 characters */
+
+      /* Check that width is updated with cells required before padding.  */
+      width = 4;                /* cells */
+      n = mbsalign ("¹²³", dest, 0, &width, MBS_ALIGN_LEFT, 0);
+      ASSERT (width == 3);
+    }
+
+  return 0;
+}