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      1 // Copyright 2017 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "fxbarcode/oned/BC_OnedEAN13Writer.h"
      6 #include "testing/gtest/include/gtest/gtest.h"
      7 
      8 namespace {
      9 
     10 TEST(OnedEAN13WriterTest, Encode) {
     11   CBC_OnedEAN13Writer writer;
     12   int32_t width;
     13   int32_t height;
     14   uint8_t* encoded;
     15   const char* expected;
     16 
     17   // EAN-13 barcodes encode 13-digit numbers into 95 modules in a unidimensional
     18   // disposition.
     19   encoded = writer.Encode("", BCFORMAT_EAN_13, width, height);
     20   EXPECT_EQ(nullptr, encoded);
     21   FX_Free(encoded);
     22 
     23   encoded = writer.Encode("123", BCFORMAT_EAN_13, width, height);
     24   EXPECT_EQ(nullptr, encoded);
     25   FX_Free(encoded);
     26 
     27   encoded = writer.Encode("123456789012", BCFORMAT_EAN_13, width, height);
     28   EXPECT_EQ(nullptr, encoded);
     29   FX_Free(encoded);
     30 
     31   encoded = writer.Encode("12345678901234", BCFORMAT_EAN_13, width, height);
     32   EXPECT_EQ(nullptr, encoded);
     33   FX_Free(encoded);
     34 
     35   encoded = writer.Encode("1234567890128", BCFORMAT_EAN_13, width, height);
     36   EXPECT_NE(nullptr, encoded);
     37   EXPECT_EQ(1, height);
     38   EXPECT_EQ(95, width);
     39 
     40   expected =
     41       "# #"  // Start
     42       // 1 implicit by LLGLGG in next 6 digits
     43       "  #  ##"  // 2 L
     44       " #### #"  // 3 L
     45       "  ### #"  // 4 G
     46       " ##   #"  // 5 L
     47       "    # #"  // 6 G
     48       "  #   #"  // 7 G
     49       " # # "    // Middle
     50       "#  #   "  // 8 R
     51       "### #  "  // 9 R
     52       "###  # "  // 0 R
     53       "##  ## "  // 1 R
     54       "## ##  "  // 2 R
     55       "#  #   "  // 8 R
     56       "# #";     // End
     57   for (int i = 0; i < 95; i++) {
     58     EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
     59   }
     60   FX_Free(encoded);
     61 
     62   encoded = writer.Encode("7776665554440", BCFORMAT_EAN_13, width, height);
     63   EXPECT_NE(nullptr, encoded);
     64   EXPECT_EQ(1, height);
     65   EXPECT_EQ(95, width);
     66 
     67   expected =
     68       "# #"  // Start
     69       // 7 implicit by LGLGLG in next 6 digits
     70       " ### ##"  // 7 L
     71       "  #   #"  // 7 G
     72       " # ####"  // 6 L
     73       "    # #"  // 6 G
     74       " # ####"  // 6 L
     75       " ###  #"  // 5 G
     76       " # # "    // Middle
     77       "#  ### "  // 5 R
     78       "#  ### "  // 5 R
     79       "# ###  "  // 4 R
     80       "# ###  "  // 4 R
     81       "# ###  "  // 4 R
     82       "###  # "  // 0 R
     83       "# #";     // End
     84   for (int i = 0; i < 95; i++) {
     85     EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
     86   }
     87   FX_Free(encoded);
     88 }
     89 
     90 TEST(OnedEAN13WriterTest, Checksum) {
     91   CBC_OnedEAN13Writer writer;
     92   EXPECT_EQ(0, writer.CalcChecksum(""));
     93   EXPECT_EQ(6, writer.CalcChecksum("123"));
     94   EXPECT_EQ(8, writer.CalcChecksum("123456789012"));
     95   EXPECT_EQ(0, writer.CalcChecksum("777666555444"));
     96 }
     97 
     98 }  // namespace
     99