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): Garret Rieger
25 */
26
27 #include "hb-test.h"
28 #include "hb-subset-test.h"
29
30 /* Unit tests for hb-subset-glyf.h */
31
32 static void
test_subset_32_tables(void)33 test_subset_32_tables (void)
34 {
35 hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/oom-6ef8c96d3710262511bcc730dce9c00e722cb653");
36
37 hb_subset_input_t *input = hb_subset_input_create_or_fail ();
38 hb_set_t *codepoints = hb_subset_input_unicode_set (input);
39 hb_face_t *subset;
40
41 hb_set_add (codepoints, 'a');
42 hb_set_add (codepoints, 'b');
43 hb_set_add (codepoints, 'c');
44
45 subset = hb_subset_or_fail (face, input);
46 g_assert (!subset);
47
48 hb_subset_input_destroy (input);
49 hb_face_destroy (subset);
50 hb_face_destroy (face);
51 }
52
53 static void
test_subset_no_inf_loop(void)54 test_subset_no_inf_loop (void)
55 {
56 hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/clusterfuzz-testcase-minimized-hb-subset-fuzzer-5521982557782016");
57
58 hb_subset_input_t *input = hb_subset_input_create_or_fail ();
59 hb_set_t *codepoints = hb_subset_input_unicode_set (input);
60 hb_face_t *subset;
61
62 hb_set_add (codepoints, 'a');
63 hb_set_add (codepoints, 'b');
64 hb_set_add (codepoints, 'c');
65
66 subset = hb_subset_or_fail (face, input);
67 g_assert (!subset);
68
69 hb_subset_input_destroy (input);
70 hb_face_destroy (subset);
71 hb_face_destroy (face);
72 }
73
74 static void
test_subset_crash(void)75 test_subset_crash (void)
76 {
77 hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/crash-4b60576767ee4d9fe1cc10959d89baf73d4e8249");
78
79 hb_subset_input_t *input = hb_subset_input_create_or_fail ();
80 hb_set_t *codepoints = hb_subset_input_unicode_set (input);
81 hb_face_t *subset;
82
83 hb_set_add (codepoints, 'a');
84 hb_set_add (codepoints, 'b');
85 hb_set_add (codepoints, 'c');
86
87 subset = hb_subset_or_fail (face, input);
88 g_assert (!subset);
89
90 hb_subset_input_destroy (input);
91 hb_face_destroy (subset);
92 hb_face_destroy (face);
93 }
94
95 static void
test_subset_set_flags(void)96 test_subset_set_flags (void)
97 {
98 hb_subset_input_t *input = hb_subset_input_create_or_fail ();
99
100 g_assert (hb_subset_input_get_flags (input) == HB_SUBSET_FLAGS_DEFAULT);
101
102 hb_subset_input_set_flags (input,
103 HB_SUBSET_FLAGS_NAME_LEGACY |
104 HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
105 HB_SUBSET_FLAGS_GLYPH_NAMES);
106
107 g_assert (hb_subset_input_get_flags (input) ==
108 (hb_subset_flags_t) (
109 HB_SUBSET_FLAGS_NAME_LEGACY |
110 HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
111 HB_SUBSET_FLAGS_GLYPH_NAMES));
112
113 hb_subset_input_set_flags (input,
114 HB_SUBSET_FLAGS_NAME_LEGACY |
115 HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
116 HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES);
117
118 g_assert (hb_subset_input_get_flags (input) ==
119 (hb_subset_flags_t) (
120 HB_SUBSET_FLAGS_NAME_LEGACY |
121 HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
122 HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES));
123
124
125 hb_subset_input_destroy (input);
126 }
127
128
129 static void
test_subset_sets(void)130 test_subset_sets (void)
131 {
132 hb_subset_input_t *input = hb_subset_input_create_or_fail ();
133 hb_set_t* set = hb_set_create ();
134
135 hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_GLYPH_INDEX), 83);
136 hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_UNICODE), 85);
137
138 hb_set_clear (hb_subset_input_set (input, HB_SUBSET_SETS_LAYOUT_FEATURE_TAG));
139 hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_LAYOUT_FEATURE_TAG), 87);
140
141 hb_set_add (set, 83);
142 g_assert (hb_set_is_equal (hb_subset_input_glyph_set (input), set));
143 hb_set_clear (set);
144
145 hb_set_add (set, 85);
146 g_assert (hb_set_is_equal (hb_subset_input_unicode_set (input), set));
147 hb_set_clear (set);
148
149 hb_set_add (set, 87);
150 g_assert (hb_set_is_equal (hb_subset_input_set (input, HB_SUBSET_SETS_LAYOUT_FEATURE_TAG), set));
151 hb_set_clear (set);
152
153 hb_set_destroy (set);
154 hb_subset_input_destroy (input);
155 }
156
157 static void
test_subset_plan(void)158 test_subset_plan (void)
159 {
160 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
161 hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
162
163 hb_set_t *codepoints = hb_set_create();
164 hb_set_add (codepoints, 97);
165 hb_set_add (codepoints, 99);
166 hb_subset_input_t* input = hb_subset_test_create_input (codepoints);
167 hb_set_destroy (codepoints);
168
169 hb_subset_plan_t* plan = hb_subset_plan_create_or_fail (face_abc, input);
170 g_assert (plan);
171
172 const hb_map_t* mapping = hb_subset_plan_old_to_new_glyph_mapping (plan);
173 g_assert (hb_map_get (mapping, 1) == 1);
174 g_assert (hb_map_get (mapping, 3) == 2);
175
176 mapping = hb_subset_plan_new_to_old_glyph_mapping (plan);
177 g_assert (hb_map_get (mapping, 1) == 1);
178 g_assert (hb_map_get (mapping, 2) == 3);
179
180 mapping = hb_subset_plan_unicode_to_old_glyph_mapping (plan);
181 g_assert (hb_map_get (mapping, 0x63) == 3);
182
183 hb_face_t* face_abc_subset = hb_subset_plan_execute_or_fail (plan);
184
185 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('l','o','c', 'a'));
186 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','l','y','f'));
187
188 hb_subset_input_destroy (input);
189 hb_subset_plan_destroy (plan);
190 hb_face_destroy (face_abc_subset);
191 hb_face_destroy (face_abc);
192 hb_face_destroy (face_ac);
193 }
194
195 static hb_blob_t*
_ref_table(hb_face_t * face HB_UNUSED,hb_tag_t tag,void * user_data)196 _ref_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
197 {
198 return hb_face_reference_table ((hb_face_t*) user_data, tag);
199 }
200
201 static void
test_subset_create_for_tables_face(void)202 test_subset_create_for_tables_face (void)
203 {
204 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
205 hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
206 hb_face_t *face_create_for_tables = hb_face_create_for_tables (
207 _ref_table,
208 face_abc,
209 NULL);
210
211 hb_set_t *codepoints = hb_set_create();
212 hb_set_add (codepoints, 97);
213 hb_set_add (codepoints, 99);
214
215 hb_subset_input_t* input = hb_subset_test_create_input (codepoints);
216 hb_set_destroy (codepoints);
217
218 hb_face_t* face_abc_subset = hb_subset_or_fail (face_create_for_tables, input);
219
220 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('l','o','c', 'a'));
221 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','l','y','f'));
222 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','a','s','p'));
223
224 hb_subset_input_destroy (input);
225 hb_face_destroy (face_abc_subset);
226 hb_face_destroy (face_create_for_tables);
227 hb_face_destroy (face_abc);
228 hb_face_destroy (face_ac);
229 }
230
231 int
main(int argc,char ** argv)232 main (int argc, char **argv)
233 {
234 hb_test_init (&argc, &argv);
235
236 hb_test_add (test_subset_32_tables);
237 hb_test_add (test_subset_no_inf_loop);
238 hb_test_add (test_subset_crash);
239 hb_test_add (test_subset_set_flags);
240 hb_test_add (test_subset_sets);
241 hb_test_add (test_subset_plan);
242 hb_test_add (test_subset_create_for_tables_face);
243
244 return hb_test_run();
245 }
246