1 /*
2 * Copyright © 2018 Google, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Google Author(s): Roderick Sheeter
25 */
26
27 #include "hb-test.h"
28 #include "hb-subset-test.h"
29
30 /* Unit tests for cmap subsetting */
31
32 static void
33 test_subset_cmap (void)
34 {
35 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
36 hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
37
38 hb_set_t *codepoints = hb_set_create ();
39 hb_face_t *face_abc_subset;
40 hb_set_add (codepoints, 97);
41 hb_set_add (codepoints, 99);
42 face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
43 hb_set_destroy (codepoints);
44
45 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('c','m','a','p'));
46
47 hb_face_destroy (face_abc_subset);
48 hb_face_destroy (face_abc);
49 hb_face_destroy (face_ac);
50 }
51
52 static void
53 test_subset_cmap_non_consecutive_glyphs (void)
54 {
55 hb_face_t *face = hb_test_open_font_file ("fonts/Roboto-Regular.D7,D8,D9,DA,DE.ttf");
56
57 hb_set_t *codepoints = hb_set_create ();
58 hb_face_t *face_subset;
59 hb_set_add (codepoints, 0xD7);
60 hb_set_add (codepoints, 0xD8);
61 hb_set_add (codepoints, 0xD9);
62 hb_set_add (codepoints, 0xDA);
63 hb_set_add (codepoints, 0xDE);
64
65 face_subset = hb_subset_test_create_subset (face, hb_subset_test_create_input (codepoints));
66 hb_set_destroy (codepoints);
67
68 hb_subset_test_check (face, face_subset, HB_TAG ('c','m','a','p'));
69
70 hb_face_destroy (face_subset);
71 hb_face_destroy (face);
72 }
73
74 static void
75 test_subset_cmap_noop (void)
76 {
77 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
78
79 hb_set_t *codepoints = hb_set_create();
80 hb_face_t *face_abc_subset;
81 hb_set_add (codepoints, 97);
82 hb_set_add (codepoints, 98);
83 hb_set_add (codepoints, 99);
84 face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
85 hb_set_destroy (codepoints);
86
87 hb_subset_test_check (face_abc, face_abc_subset, HB_TAG ('c','m','a','p'));
88
89 hb_face_destroy (face_abc_subset);
90 hb_face_destroy (face_abc);
91 }
92
93 static void
94 test_subset_cmap4_no_exceeding_maximum_codepoint (void)
95 {
96 hb_face_t *face_origin = hb_test_open_font_file ("fonts/Mplus1p-Regular.ttf");
97 hb_face_t *face_expected = hb_test_open_font_file ("fonts/Mplus1p-Regular-cmap4-testing.ttf");
98
99 hb_set_t *codepoints = hb_set_create ();
100 hb_face_t *face_subset;
101 hb_set_add (codepoints, 0x20);
102 hb_set_add (codepoints, 0x21);
103 hb_set_add (codepoints, 0x1d542);
104 hb_set_add (codepoints, 0x201a2);
105
106 face_subset = hb_subset_test_create_subset (face_origin, hb_subset_test_create_input (codepoints));
107 hb_set_destroy (codepoints);
108
109 hb_subset_test_check (face_expected, face_subset, HB_TAG ('c','m','a','p'));
110
111 hb_face_destroy (face_subset);
112 hb_face_destroy (face_expected);
113 hb_face_destroy (face_origin);
114 }
115
116 static void
117 test_subset_cmap_empty_tables (void)
118 {
119 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
120 hb_face_t *face_empty = hb_test_open_font_file ("fonts/Roboto-Regular.empty.ttf");
121
122 hb_set_t *codepoints = hb_set_create ();
123 hb_face_t *face_abc_subset;
124 hb_set_add (codepoints, 100);
125 hb_set_add (codepoints, 101);
126 face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
127 hb_set_destroy (codepoints);
128
129 hb_subset_test_check (face_empty, face_abc_subset, HB_TAG ('c','m','a','p'));
130
131 hb_face_destroy (face_abc_subset);
132 hb_face_destroy (face_abc);
133 hb_face_destroy (face_empty);
134 }
135
136 static void
137 test_subset_cmap_noto_color_emoji_noop (void)
138 {
139 hb_face_t *face = hb_test_open_font_file ("fonts/NotoColorEmoji.cmap.ttf");
140
141 hb_set_t *codepoints = hb_set_create ();
142 hb_face_t *face_subset;
143 hb_set_add (codepoints, 0x38);
144 hb_set_add (codepoints, 0x39);
145 hb_set_add (codepoints, 0xAE);
146 hb_set_add (codepoints, 0x2049);
147 hb_set_add (codepoints, 0x20E3);
148 face_subset = hb_subset_test_create_subset (face, hb_subset_test_create_input (codepoints));
149 hb_set_destroy (codepoints);
150
151 hb_subset_test_check (face, face_subset, HB_TAG ('c','m','a','p'));
152
153 hb_face_destroy (face_subset);
154 hb_face_destroy (face);
155 }
156
157 static void
158 test_subset_cmap_noto_color_emoji_non_consecutive_glyphs (void)
159 {
160 hb_face_t *face = hb_test_open_font_file ("fonts/NotoColorEmoji.cmap.ttf");
161 hb_face_t *face_expected = hb_test_open_font_file ("fonts/NotoColorEmoji.cmap.38,AE,2049.ttf");
162
163 hb_set_t *codepoints = hb_set_create ();
164 hb_face_t *face_subset;
165 hb_set_add (codepoints, 0x38);
166 hb_set_add (codepoints, 0xAE);
167 hb_set_add (codepoints, 0x2049);
168 face_subset = hb_subset_test_create_subset (face, hb_subset_test_create_input (codepoints));
169 hb_set_destroy (codepoints);
170
171 hb_subset_test_check (face_expected, face_subset, HB_TAG ('c','m','a','p'));
172
173 hb_face_destroy (face_subset);
174 hb_face_destroy (face_expected);
175 hb_face_destroy (face);
176 }
177
178 // TODO(rsheeter) test cmap to no codepoints
179
180 int
181 main (int argc, char **argv)
182 {
183 hb_test_init (&argc, &argv);
184
185 hb_test_add (test_subset_cmap);
186 hb_test_add (test_subset_cmap_noop);
187 hb_test_add (test_subset_cmap_non_consecutive_glyphs);
188 hb_test_add (test_subset_cmap4_no_exceeding_maximum_codepoint);
189 hb_test_add (test_subset_cmap_empty_tables);
190 hb_test_add (test_subset_cmap_noto_color_emoji_noop);
191 hb_test_add (test_subset_cmap_noto_color_emoji_non_consecutive_glyphs);
192
193 return hb_test_run();
194 }