1 /* Next grapheme cluster length test.
2 Copyright (C) 2010-2013 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify it
5 under the terms of the GNU Lesser General Public License as published
6 by the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Ben Pfaff <blp@cs.stanford.edu>, 2010. */
30 test_u8_grapheme_next (const char *input, size_t n, size_t len)
32 const uint8_t *s = (const uint8_t *) input;
33 const uint8_t *next = u8_grapheme_next (s, s + n);
39 fputs ("u8_grapheme_next returned NULL", stderr);
41 fprintf (stderr, "u8_grapheme_next skipped %zu bytes", next - s);
42 fprintf (stderr, ", expected %zu:\n", len);
43 for (i = 0; i < n; i++)
44 fprintf (stderr, " %02x", s[i]);
53 static const uint8_t s[] = "abc";
56 ASSERT (u8_grapheme_next (NULL, NULL) == NULL);
57 ASSERT (u8_grapheme_next (s, s) == NULL);
59 /* Standalone 1-unit graphemes. */
60 test_u8_grapheme_next ("a", 1, 1);
61 test_u8_grapheme_next ("ab", 2, 1);
62 test_u8_grapheme_next ("abc", 3, 1);
64 /* Multi-unit, single code point graphemes. */
65 #define HIRAGANA_A "\343\201\202" /* あ: Hiragana letter 'a'. */
66 test_u8_grapheme_next (HIRAGANA_A, 3, 3);
67 test_u8_grapheme_next (HIRAGANA_A"x", 4, 3);
68 test_u8_grapheme_next (HIRAGANA_A HIRAGANA_A, 6, 3);
70 /* Combining accents. */
71 #define GRAVE "\314\200" /* Combining grave accent. */
72 #define ACUTE "\314\201" /* Combining acute accent. */
73 test_u8_grapheme_next ("e"ACUTE, 3, 3);
74 test_u8_grapheme_next ("e"ACUTE GRAVE, 5, 5);
75 test_u8_grapheme_next ("e"ACUTE"x", 4, 3);
76 test_u8_grapheme_next ("e"ACUTE "e"ACUTE, 6, 3);