2 * Copyright © 2018 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
24 * Google Author(s): Garret Rieger
28 #include "hb-subset-test.h"
30 /* Unit tests for hb-subset-glyf.h */
32 static void check_maxp_field (uint8_t *raw_maxp, unsigned int offset, uint16_t expected_value)
34 uint16_t actual_value = (raw_maxp[offset] << 8) + raw_maxp[offset + 1];
35 g_assert_cmpuint(expected_value, ==, actual_value);
38 static void check_maxp_num_glyphs (hb_face_t *face, uint16_t expected_num_glyphs, bool hints)
40 hb_blob_t *maxp_blob = hb_face_reference_table (face, HB_TAG ('m','a','x', 'p'));
42 unsigned int maxp_len;
43 uint8_t *raw_maxp = (uint8_t *) hb_blob_get_data(maxp_blob, &maxp_len);
45 check_maxp_field (raw_maxp, 4, expected_num_glyphs); // numGlyphs
48 check_maxp_field (raw_maxp, 14, 1); // maxZones
49 check_maxp_field (raw_maxp, 16, 0); // maxTwilightPoints
50 check_maxp_field (raw_maxp, 18, 0); // maxStorage
51 check_maxp_field (raw_maxp, 20, 0); // maxFunctionDefs
52 check_maxp_field (raw_maxp, 22, 0); // maxInstructionDefs
53 check_maxp_field (raw_maxp, 24, 0); // maxStackElements
54 check_maxp_field (raw_maxp, 26, 0); // maxSizeOfInstructions
57 hb_blob_destroy (maxp_blob);
61 test_subset_glyf (void)
63 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
64 hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
66 hb_set_t *codepoints = hb_set_create();
67 hb_face_t *face_abc_subset;
68 hb_set_add (codepoints, 97);
69 hb_set_add (codepoints, 99);
70 face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
71 hb_set_destroy (codepoints);
73 check_maxp_num_glyphs(face_abc_subset, 3, true);
74 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('l','o','c', 'a'));
75 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','l','y','f'));
77 hb_face_destroy (face_abc_subset);
78 hb_face_destroy (face_abc);
79 hb_face_destroy (face_ac);
83 test_subset_glyf_set_overlaps_flag (void)
85 hb_face_t *face_abcAE = hb_test_open_font_file ("fonts/Roboto-Regular.abcAE.ttf");
86 hb_face_t *face_bAE = hb_test_open_font_file ("fonts/Roboto-Regular.bAE.ttf");
88 hb_set_t *codepoints = hb_set_create();
89 hb_face_t *face_abcAE_subset;
90 hb_set_add (codepoints, 32);
91 hb_set_add (codepoints, 98);
92 hb_set_add (codepoints, 508);
94 hb_subset_input_t* input = hb_subset_test_create_input (codepoints);
95 hb_subset_input_set_flags (input, HB_SUBSET_FLAGS_SET_OVERLAPS_FLAG);
96 face_abcAE_subset = hb_subset_test_create_subset (face_abcAE, input);
97 hb_set_destroy (codepoints);
99 hb_subset_test_check (face_bAE, face_abcAE_subset, HB_TAG ('l','o','c', 'a'));
100 hb_subset_test_check (face_bAE, face_abcAE_subset, HB_TAG ('g','l','y','f'));
102 hb_face_destroy (face_abcAE_subset);
103 hb_face_destroy (face_abcAE);
104 hb_face_destroy (face_bAE);
108 test_subset_glyf_with_input_glyphs (void)
110 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
111 hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
113 hb_set_t *glyphs = hb_set_create();
114 hb_face_t *face_abc_subset;
115 hb_set_add (glyphs, 1);
116 hb_set_add (glyphs, 3);
118 hb_subset_test_create_subset (face_abc, hb_subset_test_create_input_from_glyphs (glyphs));
119 hb_set_destroy (glyphs);
121 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','l','y','f'));
122 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('l','o','c', 'a'));
123 check_maxp_num_glyphs(face_abc_subset, 3, true);
125 hb_face_destroy (face_abc_subset);
126 hb_face_destroy (face_abc);
127 hb_face_destroy (face_ac);
131 test_subset_glyf_with_components (void)
133 hb_face_t *face_components = hb_test_open_font_file ("fonts/Roboto-Regular.components.ttf");
134 hb_face_t *face_subset = hb_test_open_font_file ("fonts/Roboto-Regular.components.subset.ttf");
136 hb_set_t *codepoints = hb_set_create();
137 hb_face_t *face_generated_subset;
138 hb_set_add (codepoints, 0x1fc);
139 face_generated_subset = hb_subset_test_create_subset (face_components, hb_subset_test_create_input (codepoints));
140 hb_set_destroy (codepoints);
142 hb_subset_test_check (face_subset, face_generated_subset, HB_TAG ('g','l','y','f'));
143 hb_subset_test_check (face_subset, face_generated_subset, HB_TAG ('l','o','c', 'a'));
144 check_maxp_num_glyphs(face_generated_subset, 4, true);
146 hb_face_destroy (face_generated_subset);
147 hb_face_destroy (face_subset);
148 hb_face_destroy (face_components);
152 test_subset_glyf_with_gsub (void)
154 hb_face_t *face_fil = hb_test_open_font_file ("fonts/Roboto-Regular.gsub.fil.ttf");
155 hb_face_t *face_fi = hb_test_open_font_file ("fonts/Roboto-Regular.gsub.fi.ttf");
156 hb_subset_input_t *input;
157 hb_face_t *face_subset;
159 hb_set_t *codepoints = hb_set_create();
160 hb_set_add (codepoints, 102); // f
161 hb_set_add (codepoints, 105); // i
163 input = hb_subset_test_create_input (codepoints);
164 hb_set_destroy (codepoints);
165 hb_set_del (hb_subset_input_set (input, HB_SUBSET_SETS_DROP_TABLE_TAG), HB_TAG('G', 'S', 'U', 'B'));
166 hb_set_del (hb_subset_input_set (input, HB_SUBSET_SETS_DROP_TABLE_TAG), HB_TAG('G', 'P', 'O', 'S'));
167 hb_set_del (hb_subset_input_set (input, HB_SUBSET_SETS_DROP_TABLE_TAG), HB_TAG('G', 'D', 'E', 'F'));
169 face_subset = hb_subset_test_create_subset (face_fil, input);
171 hb_subset_test_check (face_fi, face_subset, HB_TAG ('g','l','y','f'));
172 hb_subset_test_check (face_fi, face_subset, HB_TAG ('l','o','c', 'a'));
173 check_maxp_num_glyphs(face_subset, 5, true);
175 hb_face_destroy (face_subset);
176 hb_face_destroy (face_fi);
177 hb_face_destroy (face_fil);
181 test_subset_glyf_without_gsub (void)
183 hb_face_t *face_fil = hb_test_open_font_file ("fonts/Roboto-Regular.gsub.fil.ttf");
184 hb_face_t *face_fi = hb_test_open_font_file ("fonts/Roboto-Regular.nogsub.fi.ttf");
185 hb_subset_input_t *input;
186 hb_face_t *face_subset;
188 hb_set_t *codepoints = hb_set_create();
189 hb_set_add (codepoints, 102); // f
190 hb_set_add (codepoints, 105); // i
192 input = hb_subset_test_create_input (codepoints);
193 hb_set_destroy (codepoints);
194 hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_DROP_TABLE_TAG), HB_TAG('G', 'S', 'U', 'B'));
195 hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_DROP_TABLE_TAG), HB_TAG('G', 'P', 'O', 'S'));
196 hb_set_add (hb_subset_input_set (input, HB_SUBSET_SETS_DROP_TABLE_TAG), HB_TAG('G', 'D', 'E', 'F'));
198 face_subset = hb_subset_test_create_subset (face_fil, input);
200 hb_subset_test_check (face_fi, face_subset, HB_TAG ('g','l','y','f'));
201 hb_subset_test_check (face_fi, face_subset, HB_TAG ('l','o','c', 'a'));
202 check_maxp_num_glyphs(face_subset, 3, true);
204 hb_face_destroy (face_subset);
205 hb_face_destroy (face_fi);
206 hb_face_destroy (face_fil);
210 test_subset_glyf_noop (void)
212 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
214 hb_set_t *codepoints = hb_set_create();
215 hb_face_t *face_abc_subset;
216 hb_set_add (codepoints, 97);
217 hb_set_add (codepoints, 98);
218 hb_set_add (codepoints, 99);
219 face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
220 hb_set_destroy (codepoints);
222 check_maxp_num_glyphs(face_abc_subset, 4, true);
223 hb_subset_test_check (face_abc, face_abc_subset, HB_TAG ('l','o','c', 'a'));
224 hb_subset_test_check (face_abc, face_abc_subset, HB_TAG ('g','l','y','f'));
226 hb_face_destroy (face_abc_subset);
227 hb_face_destroy (face_abc);
231 test_subset_glyf_strip_hints_simple (void)
233 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
234 hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.nohints.ttf");
236 hb_set_t *codepoints = hb_set_create();
237 hb_subset_input_t *input;
238 hb_face_t *face_abc_subset;
239 hb_set_add (codepoints, 'a');
240 hb_set_add (codepoints, 'c');
241 input = hb_subset_test_create_input (codepoints);
242 hb_subset_input_set_flags (input, HB_SUBSET_FLAGS_NO_HINTING);
243 face_abc_subset = hb_subset_test_create_subset (face_abc, input);
244 hb_set_destroy (codepoints);
246 check_maxp_num_glyphs(face_abc_subset, 3, false);
247 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('l','o','c', 'a'));
248 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','l','y','f'));
250 hb_face_destroy (face_abc_subset);
251 hb_face_destroy (face_abc);
252 hb_face_destroy (face_ac);
256 test_subset_glyf_strip_hints_composite (void)
258 hb_face_t *face_components = hb_test_open_font_file ("fonts/Roboto-Regular.components.ttf");
259 hb_face_t *face_subset = hb_test_open_font_file ("fonts/Roboto-Regular.components.1fc.nohints.ttf");
261 hb_set_t *codepoints = hb_set_create();
262 hb_subset_input_t *input;
263 hb_face_t *face_generated_subset;
264 hb_set_add (codepoints, 0x1fc);
265 input = hb_subset_test_create_input (codepoints);
266 hb_subset_input_set_flags (input, HB_SUBSET_FLAGS_NO_HINTING);
268 face_generated_subset = hb_subset_test_create_subset (face_components, input);
269 hb_set_destroy (codepoints);
271 check_maxp_num_glyphs(face_generated_subset, 4, false);
272 hb_subset_test_check (face_subset, face_generated_subset, HB_TAG ('l','o','c', 'a'));
273 hb_subset_test_check (face_subset, face_generated_subset, HB_TAG ('g','l','y','f'));
275 hb_face_destroy (face_generated_subset);
276 hb_face_destroy (face_subset);
277 hb_face_destroy (face_components);
281 test_subset_glyf_strip_hints_invalid (void)
283 hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/oom-ccc61c92d589f895174cdef6ff2e3b20e9999a1a");
285 hb_set_t *codepoints = hb_set_create();
286 const hb_codepoint_t text[] =
288 'A', 'B', 'C', 'D', 'E', 'X', 'Y', 'Z', '1', '2',
289 '3', '@', '_', '%', '&', ')', '*', '$', '!'
292 hb_subset_input_t *input;
293 hb_face_t *face_subset;
295 for (i = 0; i < sizeof (text) / sizeof (hb_codepoint_t); i++)
297 hb_set_add (codepoints, text[i]);
300 input = hb_subset_test_create_input (codepoints);
301 hb_subset_input_set_flags (input, HB_SUBSET_FLAGS_NO_HINTING);
302 hb_set_destroy (codepoints);
304 face_subset = hb_subset_or_fail (face, input);
305 g_assert (!face_subset);
307 hb_subset_input_destroy (input);
308 hb_face_destroy (face);
312 test_subset_glyf_retain_gids (void)
314 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
315 hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.retaingids.ttf");
317 hb_set_t *codepoints = hb_set_create();
318 hb_face_t *face_abc_subset;
319 hb_set_add (codepoints, 97);
320 hb_set_add (codepoints, 99);
322 hb_subset_input_t *input = hb_subset_test_create_input (codepoints);
323 hb_subset_input_set_flags (input, HB_SUBSET_FLAGS_RETAIN_GIDS);
324 face_abc_subset = hb_subset_test_create_subset (face_abc, input);
325 hb_set_destroy (codepoints);
327 check_maxp_num_glyphs(face_abc_subset, 4, true);
328 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('l','o','c', 'a'));
329 hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('g','l','y','f'));
331 hb_face_destroy (face_abc_subset);
332 hb_face_destroy (face_abc);
333 hb_face_destroy (face_ac);
337 test_subset_glyf_retain_gids_truncates (void)
339 hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
340 hb_face_t *face_a = hb_test_open_font_file ("fonts/Roboto-Regular.a.retaingids.ttf");
342 hb_set_t *codepoints = hb_set_create();
343 hb_face_t *face_abc_subset;
344 hb_set_add (codepoints, 97);
346 hb_subset_input_t *input = hb_subset_test_create_input (codepoints);
347 hb_subset_input_set_flags (input, HB_SUBSET_FLAGS_RETAIN_GIDS);
348 face_abc_subset = hb_subset_test_create_subset (face_abc, input);
349 hb_set_destroy (codepoints);
351 check_maxp_num_glyphs(face_abc_subset, 2, true);
352 hb_subset_test_check (face_a, face_abc_subset, HB_TAG ('l','o','c', 'a'));
353 hb_subset_test_check (face_a, face_abc_subset, HB_TAG ('g','l','y','f'));
355 hb_face_destroy (face_abc_subset);
356 hb_face_destroy (face_abc);
357 hb_face_destroy (face_a);
360 // TODO(grieger): test for long loca generation.
363 main (int argc, char **argv)
365 hb_test_init (&argc, &argv);
367 hb_test_add (test_subset_glyf_noop);
368 hb_test_add (test_subset_glyf);
369 hb_test_add (test_subset_glyf_set_overlaps_flag);
370 hb_test_add (test_subset_glyf_with_input_glyphs);
371 hb_test_add (test_subset_glyf_strip_hints_simple);
372 hb_test_add (test_subset_glyf_strip_hints_composite);
373 hb_test_add (test_subset_glyf_strip_hints_invalid);
374 hb_test_add (test_subset_glyf_with_components);
375 hb_test_add (test_subset_glyf_with_gsub);
376 hb_test_add (test_subset_glyf_without_gsub);
377 hb_test_add (test_subset_glyf_retain_gids);
378 hb_test_add (test_subset_glyf_retain_gids_truncates);
380 return hb_test_run();