[subset] Add some helper functions for writing tests around subsetting.

This commit is contained in:
Garret Rieger 2018-02-12 13:33:55 -08:00
parent e8318188c0
commit d8d8bd8405
2 changed files with 124 additions and 1 deletions

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@ -16,7 +16,7 @@ if HAVE_GLIB
AM_CPPFLAGS = -DSRCDIR="\"$(srcdir)\"" -I$(top_srcdir)/src/ -I$(top_builddir)/src/ $(GLIB_CFLAGS)
LDADD = $(top_builddir)/src/libharfbuzz.la $(GLIB_LIBS)
EXTRA_DIST += hb-test.h
EXTRA_DIST += hb-test.h hb-subset-test.h
check_PROGRAMS = $(TEST_PROGS)
noinst_PROGRAMS = $(TEST_PROGS)

123
test/api/hb-subset-test.h Normal file
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@ -0,0 +1,123 @@
/*
* 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
*/
#ifndef HB_SUBSET_TEST_H
#define HB_SUBSET_TEST_H
#include <stdio.h>
#include "hb-test.h"
HB_BEGIN_DECLS
static inline char *
hb_subset_test_read_file (const char *path,
size_t *length /* OUT */)
{
FILE *fp = fopen (path, "rb");
size_t file_length = 0;
char *buffer = NULL;
if (fp && fseek (fp, 0, SEEK_END) == 0) {
file_length = ftell(fp);
rewind (fp);
}
if (file_length > 0) {
buffer = (char *) calloc (file_length + 1, sizeof(char));
if (fread (buffer, 1, file_length, fp) == file_length) {
*length = file_length;
} else {
free (buffer);
buffer = NULL;
}
}
if (fp)
fclose(fp);
return buffer;
}
static inline hb_face_t *
hb_subset_test_open_font (const char *font_path)
{
#if GLIB_CHECK_VERSION(2,37,2)
gchar* path = g_test_build_filename(G_TEST_DIST, font_path, NULL);
#else
gchar* path = g_strdup(fontFile);
#endif
size_t length;
char *font_data = hb_subset_test_read_file(path, &length);
if (font_data != NULL) {
hb_blob_t *blob = hb_blob_create (font_data,
length,
HB_MEMORY_MODE_READONLY,
font_data,
free);
hb_face_t *face = hb_face_create (blob, 0);
hb_blob_destroy (blob);
return face;
}
return NULL;
}
static inline hb_face_t *
hb_subset_test_create_subset (hb_face_t *source,
hb_set_t *codepoints)
{
hb_subset_profile_t *profile = hb_subset_profile_create();
hb_subset_input_t *input = hb_subset_input_create (codepoints);
hb_face_t *subset = hb_subset (source, profile, input);
g_assert (subset);
hb_subset_profile_destroy (profile);
hb_subset_input_destroy (input);
return subset;
}
static inline void
hb_subset_test_check (hb_face_t *expected,
hb_face_t *actual,
hb_tag_t table)
{
hb_blob_t *glyf_expected_blob = hb_face_reference_table (expected, table);
hb_blob_t *glyf_actual_blob = hb_face_reference_table (actual, table);
int expected_length, actual_length;
g_assert_cmpmem(hb_blob_get_data (glyf_expected_blob, &expected_length), expected_length,
hb_blob_get_data (glyf_actual_blob, &actual_length), actual_length);
hb_blob_destroy (glyf_actual_blob);
hb_blob_destroy (glyf_expected_blob);
}
HB_END_DECLS
#endif /* HB_SUBSET_TEST_H */