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      1 /*
      2  * Copyright 2011 Google Inc. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "gtest/gtest.h"
     18 #include "sample/chromium/font_subsetter.h"
     19 #include "test/test_data.h"
     20 #include "test/test_font_utils.h"
     21 
     22 namespace {
     23   // Use an additional variable to easily change name for testing.
     24   const char* kInputFileName = sfntly::SAMPLE_TTF_FILE;
     25   const char* kFontName = "Tuffy";
     26   const char* kOutputFileName = "tuffy-s.ttf";
     27   // The subset we want: Hello, world!
     28   // The array is unsorted to verify that the subsetter gets the glyph id
     29   // correctly.
     30   const unsigned int kGlyphIds[] = { 43, 72, 79, 82, 15, 3, 90, 85, 71, 4 };
     31   const unsigned int kGlyphIdsCount = sizeof(kGlyphIds) / sizeof(unsigned int);
     32 }
     33 
     34 // This function is deliberately located at global namespace.
     35 bool TestChromeSubsetter() {
     36   sfntly::ByteVector input_buffer;
     37   sfntly::LoadFile(kInputFileName, &input_buffer);
     38   EXPECT_GT(input_buffer.size(), (size_t)0);
     39 
     40   unsigned char* output_buffer = NULL;
     41   int output_length =
     42       SfntlyWrapper::SubsetFont(kFontName,
     43                                 &(input_buffer[0]),
     44                                 input_buffer.size(),
     45                                 kGlyphIds,
     46                                 kGlyphIdsCount,
     47                                 &output_buffer);
     48 
     49   EXPECT_GT(output_length, 0);
     50 
     51   if (output_length > 0) {
     52     FILE* output_file = NULL;
     53 #if defined WIN32
     54     fopen_s(&output_file, kOutputFileName, "wb");
     55 #else
     56     output_file = fopen(kOutputFileName, "wb");
     57 #endif
     58     EXPECT_TRUE((output_file != NULL));
     59     if (output_file) {
     60       int byte_count = fwrite(output_buffer, 1, output_length, output_file);
     61       EXPECT_EQ(byte_count, output_length);
     62       fflush(output_file);
     63       fclose(output_file);
     64     }
     65 
     66     delete[] output_buffer;
     67     return true;
     68   }
     69 
     70   return false;
     71 }
     72 
     73 TEST(ChromeSubsetter, All) {
     74   EXPECT_TRUE(TestChromeSubsetter());
     75 }
     76