test/otf_basic_editing_test.cc

/*
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "gtest/gtest.h"
#include "sfntly/font.h"
#include "sfntly/font_factory.h"
#include "sfntly/font_header_table.h"
#include "sfntly/tag.h"
#include "sfntly/data/memory_byte_array.h"
#include "sfntly/port/endian.h"
#include "sfntly/port/file_input_stream.h"
#include "sfntly/port/memory_output_stream.h"
#include "test/otf_basic_editing_test.h"
#include "test/test_data.h"
#include "test/test_font_utils.h"

namespace sfntly {

bool testOTFBasicEditing() {
  FontFactoryPtr factory = FontFactory::getInstance();
  FontBuilderArray font_builder_array;
  builderForFontFile(SAMPLE_TTF_FILE, factory, &font_builder_array);
  FontBuilderPtr font_builder = font_builder_array[0];

  // ensure the builder is not bogus
  EXPECT_TRUE(font_builder != NULL);
  TableBuilderMap* builder_map = font_builder->tableBuilders();
  EXPECT_TRUE(builder_map != NULL);
  for (TableBuilderMap::iterator i = builder_map->begin(),
                                 e = builder_map->end(); i != e; ++i) {
    EXPECT_TRUE(i->second != NULL);
    if (i->second == NULL) {
      char tag[5] = {0};
      int32_t value = toBE32(i->first);
      memcpy(tag, &value, 4);
      fprintf(stderr, "tag %s does not have valid builder\n", tag);
    }
  }

  IntegerSet builder_tags;
  font_builder->tableBuilderTags(&builder_tags);
  FontHeaderTableBuilderPtr header_builder =
      down_cast<FontHeaderTable::Builder*>(
          font_builder->getTableBuilder(Tag::head));
  int64_t mod_date = header_builder->modified();
  header_builder->setModified(mod_date + 1);
  FontPtr font;
  font.attach(font_builder->build());

  // ensure every table had a builder
  TableMap* table_map = font->tables();
  for (TableMap::iterator i = table_map->begin(), e = table_map->end();
                          i != e; ++i) {
    TablePtr table = (*i).second;
    TableHeaderPtr header = table->header();
    EXPECT_TRUE(builder_tags.find(header->tag()) != builder_tags.end());
    builder_tags.erase(header->tag());
  }
  EXPECT_TRUE(builder_tags.empty());

  FontHeaderTablePtr header = down_cast<FontHeaderTable*>(
      font->table(Tag::head));
  int64_t after_mod_date = header->modified();
  EXPECT_EQ(mod_date + 1, after_mod_date);
  return true;
}

}  // namespace sfntly