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[subset] add unit tests for vmtx subsetting.

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This commit is contained in:
Garret Rieger 2018-03-06 15:40:35 -08:00
parent 0e8f9430c8
commit d9263f0230
4 changed files with 102 additions and 0 deletions
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2
test/api/Makefile.am
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@ -36,6 +36,7 @@ TEST_PROGS = \
test-subset-hdmx \
test-subset-hmtx \
test-subset-os2 \
test-subset-vmtx \
test-unicode \
test-version \
$(NULL)
@ -46,6 +47,7 @@ test_subset_glyf_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
test_subset_hdmx_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
test_subset_hmtx_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
test_subset_os2_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
test_subset_vmtx_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
test_unicode_CPPFLAGS = \
$(AM_CPPFLAGS) \

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test/api/fonts/Mplus1p-Regular.660E,6975,73E0,5EA6,8F38,6E05.ttf Normal file
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test/api/fonts/Mplus1p-Regular.660E.ttf Normal file
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100
test/api/test-subset-vmtx.c Normal file
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@ -0,0 +1,100 @@
/*
* 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 <stdbool.h>
#include "hb-test.h"
#include "hb-subset-test.h"
/* Unit tests for hmtx subsetting */
static void check_num_vmetrics(hb_face_t *face, uint16_t expected_num_hmetrics)
{
hb_blob_t *vhea_blob = hb_face_reference_table (face, HB_TAG ('v','h','e','a'));
hb_blob_t *vmtx_blob = hb_face_reference_table (face, HB_TAG ('v','m','t','x'));
// TODO I sure wish I could just use the hmtx table struct!
unsigned int vhea_len;
uint8_t *raw_vhea = (uint8_t *) hb_blob_get_data(vhea_blob, &vhea_len);
uint16_t num_hmetrics = (raw_vhea[vhea_len - 2] << 8) + raw_vhea[vhea_len - 1];
g_assert_cmpuint(expected_num_hmetrics, ==, num_hmetrics);
hb_blob_destroy (vhea_blob);
hb_blob_destroy (vmtx_blob);
}
static void
test_subset_vmtx_simple_subset (void)
{
hb_face_t *face_full = hb_subset_test_open_font ("fonts/Mplus1p-Regular.660E,6975,73E0,5EA6,8F38,6E05.ttf");
hb_face_t *face_subset = hb_subset_test_open_font ("fonts/Mplus1p-Regular.660E.ttf");
hb_set_t *codepoints = hb_set_create ();
hb_set_add (codepoints, 0x660E);
hb_face_t *face_full_subset = hb_subset_test_create_subset (face_full, hb_subset_test_create_input (codepoints));
hb_set_destroy (codepoints);
check_num_vmetrics(face_full_subset, 1); /* nothing has same width */
hb_subset_test_check (face_subset, face_full_subset, HB_TAG ('v','m','t','x'));
hb_face_destroy (face_full_subset);
hb_face_destroy (face_full);
hb_face_destroy (face_subset);
}
static void
test_subset_vmtx_noop (void)
{
hb_face_t *face_full = hb_subset_test_open_font ("fonts/Mplus1p-Regular.660E,6975,73E0,5EA6,8F38,6E05.ttf");
hb_set_t *codepoints = hb_set_create();
hb_set_add (codepoints, 0x660E);
hb_set_add (codepoints, 0x6975);
hb_set_add (codepoints, 0x73E0);
hb_set_add (codepoints, 0x5EA6);
hb_set_add (codepoints, 0x8F38);
hb_set_add (codepoints, 0x6E05);
hb_face_t *face_full_subset = hb_subset_test_create_subset (face_full, hb_subset_test_create_input (codepoints));
hb_set_destroy (codepoints);
check_num_vmetrics(face_full_subset, 1); /* all have the same width */
hb_subset_test_check (face_full, face_full_subset, HB_TAG ('v','m','t','x'));
hb_face_destroy (face_full_subset);
hb_face_destroy (face_full);
}
int
main (int argc, char **argv)
{
hb_test_init (&argc, &argv);
hb_test_add (test_subset_vmtx_simple_subset);
hb_test_add (test_subset_vmtx_noop);
return hb_test_run();
}