kc3-lang/harfbuzz/test/api/test-subset-vmtx.c

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• Hash : c110878c
  Author :
  Date : 2018-10-21T11:07:17
  

  [test] Unify font file opening across the tests
  

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• test/api/test-subset-vmtx.c

• /*
   * 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 hmtx subsetting */
  
  static void check_num_vmetrics(hb_face_t *face, uint16_t expected_num_vmetrics)
  {
    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'));
  
    unsigned int vhea_len;
    uint8_t *raw_vhea = (uint8_t *) hb_blob_get_data(vhea_blob, &vhea_len);
    uint16_t num_vmetrics = (raw_vhea[vhea_len - 2] << 8) + raw_vhea[vhea_len - 1];
    g_assert_cmpuint(expected_num_vmetrics, ==, num_vmetrics);
  
    hb_blob_destroy (vhea_blob);
    hb_blob_destroy (vmtx_blob);
  }
  
  static void
  test_subset_vmtx_simple_subset (void)
  {
    hb_face_t *face_full = hb_test_open_font_file ("fonts/Mplus1p-Regular.660E,6975,73E0,5EA6,8F38,6E05.ttf");
    hb_face_t *face_subset = hb_test_open_font_file ("fonts/Mplus1p-Regular.660E.ttf");
    hb_face_t *face_full_subset;
  
    hb_set_t *codepoints = hb_set_create ();
    hb_set_add (codepoints, 0x660E);
  
    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_test_open_font_file ("fonts/Mplus1p-Regular.660E,6975,73E0,5EA6,8F38,6E05.ttf");
    hb_face_t *face_full_subset;
  
    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);
    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();
  }
  

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