unigbrk: New modules for grapheme clusters.

[gnulib.git] / tests / unigbrk / test-u8-grapheme-breaks.c

diff --git a/tests/unigbrk/test-u8-grapheme-breaks.c b/tests/unigbrk/test-u8-grapheme-breaks.c
new file mode 100644 (file)
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+++ b/tests/unigbrk/test-u8-grapheme-breaks.c
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+/* Grapheme cluster breaks test.
+   Copyright (C) 2010, 2011 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Ben Pfaff <blp@cs.stanford.edu>, 2010. */
+
+#include <config.h>
+
+/* Specification. */
+#include <unigbrk.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+static void
+test_u8_grapheme_breaks (const uint8_t *s, const char *expected)
+{
+  size_t n = strlen (expected);
+  char *breaks;
+  size_t i;
+
+  breaks = malloc (n);
+  if (!breaks)
+    abort ();
+  memset (breaks, 0xcc, n);
+
+  u8_grapheme_breaks (s, n, breaks);
+  for (i = 0; i < n; i++)
+    if (breaks[i] != (expected[i] == '#'))
+      {
+        size_t j;
+
+        fprintf (stderr, "wrong grapheme breaks:\n");
+
+        fprintf (stderr, "   input:");
+        for (j = 0; j < n; j++)
+          fprintf (stderr, " %02x", s[j]);
+        putc ('\n', stderr);
+
+        fprintf (stderr, "expected:");
+        for (j = 0; j < n; j++)
+          fprintf (stderr, "  %d", expected[j] == '#');
+        putc ('\n', stderr);
+
+        fprintf (stderr, "  actual:");
+        for (j = 0; j < n; j++)
+          fprintf (stderr, "  %d", breaks[j]);
+        putc ('\n', stderr);
+
+        abort ();
+      }
+
+  free (breaks);
+}
+
+int
+main (void)
+{
+  static const char s[] = "abc";
+
+  /* Standalone 1-unit graphemes.  */
+  test_u8_grapheme_breaks ("a", "#");
+  test_u8_grapheme_breaks ("ab", "##");
+  test_u8_grapheme_breaks ("abc", "###");
+
+  /* Multi-unit, single code point graphemes. */
+#define HIRAGANA_A "\343\201\202" /* あ: Hiragana letter 'a'. */
+  test_u8_grapheme_breaks (HIRAGANA_A, "#__");
+  test_u8_grapheme_breaks (HIRAGANA_A"x", "#__#");
+  test_u8_grapheme_breaks (HIRAGANA_A HIRAGANA_A, "#__#__");
+
+  /* Combining accents. */
+#define GRAVE "\314\200"        /* Combining grave accent. */
+#define ACUTE "\314\201"        /* Combining acute accent. */
+  test_u8_grapheme_breaks ("e"ACUTE, "#__");
+  test_u8_grapheme_breaks ("e"ACUTE GRAVE, "#____");
+  test_u8_grapheme_breaks ("e"ACUTE"x", "#__#");
+  test_u8_grapheme_breaks ("e"ACUTE "e"ACUTE, "#__#__");
+
+  return 0;
+}