harfbuzz/test/api/test-subset-cmap.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): Roderick Sheeter
*/
#include "hb-test.h"
#include "hb-subset-test.h"
/* Unit tests for cmap subsetting */
static void
test_subset_cmap (void)
{
hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
hb_face_t *face_ac = hb_test_open_font_file ("fonts/Roboto-Regular.ac.ttf");
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hb_set_t *codepoints = hb_set_create ();
hb_face_t *face_abc_subset;
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hb_set_add (codepoints, 97);
hb_set_add (codepoints, 99);
face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
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hb_set_destroy (codepoints);
hb_subset_test_check (face_ac, face_abc_subset, HB_TAG ('c','m','a','p'));
hb_face_destroy (face_abc_subset);
hb_face_destroy (face_abc);
hb_face_destroy (face_ac);
}
static void
test_subset_cmap_non_consecutive_glyphs (void)
{
hb_face_t *face = hb_test_open_font_file ("fonts/Roboto-Regular.D7,D8,D9,DA,DE.ttf");
hb_set_t *codepoints = hb_set_create ();
hb_face_t *face_subset;
hb_set_add (codepoints, 0xD7);
hb_set_add (codepoints, 0xD8);
hb_set_add (codepoints, 0xD9);
hb_set_add (codepoints, 0xDA);
hb_set_add (codepoints, 0xDE);
face_subset = hb_subset_test_create_subset (face, hb_subset_test_create_input (codepoints));
hb_set_destroy (codepoints);
hb_subset_test_check (face, face_subset, HB_TAG ('c','m','a','p'));
hb_face_destroy (face_subset);
hb_face_destroy (face);
}
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static void
test_subset_cmap_noop (void)
{
hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
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hb_set_t *codepoints = hb_set_create();
hb_face_t *face_abc_subset;
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hb_set_add (codepoints, 97);
hb_set_add (codepoints, 98);
hb_set_add (codepoints, 99);
face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
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hb_set_destroy (codepoints);
hb_subset_test_check (face_abc, face_abc_subset, HB_TAG ('c','m','a','p'));
hb_face_destroy (face_abc_subset);
hb_face_destroy (face_abc);
}
static void
test_subset_cmap4_no_exceeding_maximum_codepoint (void)
{
hb_face_t *face_origin = hb_test_open_font_file ("fonts/Mplus1p-Regular.ttf");
hb_face_t *face_expected = hb_test_open_font_file ("fonts/Mplus1p-Regular-cmap4-testing.ttf");
hb_set_t *codepoints = hb_set_create ();
hb_face_t *face_subset;
hb_set_add (codepoints, 0x20);
hb_set_add (codepoints, 0x21);
hb_set_add (codepoints, 0x1d542);
hb_set_add (codepoints, 0x201a2);
face_subset = hb_subset_test_create_subset (face_origin, hb_subset_test_create_input (codepoints));
hb_set_destroy (codepoints);
hb_subset_test_check (face_expected, face_subset, HB_TAG ('c','m','a','p'));
hb_face_destroy (face_subset);
hb_face_destroy (face_expected);
hb_face_destroy (face_origin);
}
static void
test_subset_cmap_empty_tables (void)
{
hb_face_t *face_abc = hb_test_open_font_file ("fonts/Roboto-Regular.abc.ttf");
hb_face_t *face_empty = hb_test_open_font_file ("fonts/Roboto-Regular.empty.ttf");
hb_set_t *codepoints = hb_set_create ();
hb_face_t *face_abc_subset;
hb_set_add (codepoints, 100);
hb_set_add (codepoints, 101);
face_abc_subset = hb_subset_test_create_subset (face_abc, hb_subset_test_create_input (codepoints));
hb_set_destroy (codepoints);
hb_subset_test_check (face_empty, face_abc_subset, HB_TAG ('c','m','a','p'));
hb_face_destroy (face_abc_subset);
hb_face_destroy (face_abc);
hb_face_destroy (face_empty);
}
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// TODO(rsheeter) test cmap to no codepoints
int
main (int argc, char **argv)
{
hb_test_init (&argc, &argv);
hb_test_add (test_subset_cmap);
hb_test_add (test_subset_cmap_noop);
hb_test_add (test_subset_cmap_non_consecutive_glyphs);
hb_test_add (test_subset_cmap4_no_exceeding_maximum_codepoint);
hb_test_add (test_subset_cmap_empty_tables);
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return hb_test_run();
}