harfbuzz/test/api/test-subset.c

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/*
* Copyright © 2018 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Garret Rieger
*/
#include "hb-test.h"
#include "hb-subset-test.h"
/* Unit tests for hb-subset-glyf.h */
static void
test_subset_32_tables (void)
{
hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/oom-6ef8c96d3710262511bcc730dce9c00e722cb653");
hb_subset_input_t *input = hb_subset_input_create_or_fail ();
hb_set_t *codepoints = hb_subset_input_unicode_set (input);
hb_face_t *subset;
hb_set_add (codepoints, 'a');
hb_set_add (codepoints, 'b');
hb_set_add (codepoints, 'c');
subset = hb_subset_or_fail (face, input);
g_assert (subset);
g_assert (subset != hb_face_get_empty ());
hb_subset_input_destroy (input);
hb_face_destroy (subset);
hb_face_destroy (face);
}
static void
test_subset_no_inf_loop (void)
{
hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/clusterfuzz-testcase-minimized-hb-subset-fuzzer-5521982557782016");
hb_subset_input_t *input = hb_subset_input_create_or_fail ();
hb_set_t *codepoints = hb_subset_input_unicode_set (input);
hb_face_t *subset;
hb_set_add (codepoints, 'a');
hb_set_add (codepoints, 'b');
hb_set_add (codepoints, 'c');
subset = hb_subset_or_fail (face, input);
g_assert (!subset);
hb_subset_input_destroy (input);
hb_face_destroy (subset);
hb_face_destroy (face);
}
static void
test_subset_crash (void)
{
hb_face_t *face = hb_test_open_font_file ("../fuzzing/fonts/crash-4b60576767ee4d9fe1cc10959d89baf73d4e8249");
hb_subset_input_t *input = hb_subset_input_create_or_fail ();
hb_set_t *codepoints = hb_subset_input_unicode_set (input);
hb_face_t *subset;
hb_set_add (codepoints, 'a');
hb_set_add (codepoints, 'b');
hb_set_add (codepoints, 'c');
subset = hb_subset_or_fail (face, input);
g_assert (!subset);
hb_subset_input_destroy (input);
hb_face_destroy (subset);
hb_face_destroy (face);
}
static void
test_subset_set_flags (void)
{
hb_subset_input_t *input = hb_subset_input_create_or_fail ();
g_assert (hb_subset_input_get_flags (input) == HB_SUBSET_FLAGS_DEFAULT);
hb_subset_input_set_flags (input,
HB_SUBSET_FLAGS_NAME_LEGACY |
HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
HB_SUBSET_FLAGS_GLYPH_NAMES);
g_assert (hb_subset_input_get_flags (input) ==
(hb_subset_flags_t) (
HB_SUBSET_FLAGS_NAME_LEGACY |
HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
HB_SUBSET_FLAGS_GLYPH_NAMES));
hb_subset_input_set_flags (input,
HB_SUBSET_FLAGS_NAME_LEGACY |
HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
HB_SUBSET_FLAGS_RETAIN_ALL_FEATURES);
g_assert (hb_subset_input_get_flags (input) ==
(hb_subset_flags_t) (
HB_SUBSET_FLAGS_NAME_LEGACY |
HB_SUBSET_FLAGS_NOTDEF_OUTLINE |
HB_SUBSET_FLAGS_RETAIN_ALL_FEATURES));
hb_subset_input_destroy (input);
}
static void
test_subset_legacy_api (void)
{
hb_subset_input_t *input = hb_subset_input_create_or_fail ();
g_assert (hb_subset_input_get_flags (input) == HB_SUBSET_FLAGS_DEFAULT);
hb_subset_input_set_flags (input,
HB_SUBSET_FLAGS_NAME_LEGACY |
HB_SUBSET_FLAGS_NOTDEF_OUTLINE);
g_assert (hb_subset_input_get_name_legacy (input));
g_assert (hb_subset_input_get_notdef_outline (input));
g_assert (!hb_subset_input_get_desubroutinize (input));
g_assert (!hb_subset_input_get_drop_hints (input));
hb_subset_input_set_drop_hints (input, true);
hb_subset_input_set_name_legacy (input, false);
g_assert (!hb_subset_input_get_name_legacy (input));
g_assert (hb_subset_input_get_notdef_outline (input));
g_assert (!hb_subset_input_get_desubroutinize (input));
g_assert (hb_subset_input_get_drop_hints (input));
hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
hb_set_t *codepoints = hb_set_create();
hb_set_add (codepoints, 97);
hb_set_add (codepoints, 99);
hb_set_union (hb_subset_input_unicode_set (input), codepoints);
hb_set_destroy (codepoints);
hb_face_t *face_abc_subset_new = hb_subset (face_abc, input);
hb_face_t *face_abc_subset_legacy = hb_subset_or_fail (face_abc, input);
hb_blob_t* a = hb_face_reference_blob (face_abc_subset_new);
hb_blob_t* b = hb_face_reference_blob (face_abc_subset_new);
hb_test_assert_blobs_equal (a, b);
hb_blob_destroy (a);
hb_blob_destroy (b);
hb_face_destroy (face_abc_subset_new);
hb_face_destroy (face_abc_subset_legacy);
hb_face_destroy (face_abc);
hb_subset_input_destroy (input);
}
int
main (int argc, char **argv)
{
hb_test_init (&argc, &argv);
hb_test_add (test_subset_32_tables);
hb_test_add (test_subset_no_inf_loop);
hb_test_add (test_subset_crash);
hb_test_add (test_subset_set_flags);
hb_test_add (test_subset_legacy_api);
return hb_test_run();
}