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// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <cstring>
#include "fxbarcode/oned/BC_OnedCode39Writer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
// 3 wide and 6 narrow modules per char. 1 space between chars.
const int MODULES_PER_CHAR = 3 * 3 + 6 * 1 + 1;
// '*' is added as the first and last char.
const int DELIMITER_CHARS = 2;
// Last char may serve as checksum.
const int CHECKSUM_CHARS = 1;
TEST(OnedCode39WriterTest, SetWideNarrowRatio) {
// Code 39 barcodes encode strings of any size into modules in a
// unidimensional disposition.
// Each module is either: a narrow bar, a narrow space, a wide
// bar, or a wide space. Accepted wide-to-narrow ratios are between 2 and 3.
// This writer in particular only takes integer ratios, so it's either 2 or 3.
CBC_OnedCode39Writer writer;
EXPECT_FALSE(writer.SetWideNarrowRatio(0));
EXPECT_FALSE(writer.SetWideNarrowRatio(1));
EXPECT_TRUE(writer.SetWideNarrowRatio(2));
EXPECT_TRUE(writer.SetWideNarrowRatio(3));
EXPECT_FALSE(writer.SetWideNarrowRatio(4));
EXPECT_FALSE(writer.SetWideNarrowRatio(100));
writer.SetWideNarrowRatio(3);
int32_t width;
int32_t height;
uint8_t* encoded;
const char* expected;
encoded = writer.Encode("PDFIUM", BCFORMAT_CODE_39, width, height);
expected =
"# # ### ### # " // * Start
"# ### ### # # " // P
"# # ### # ### " // D
"# ### ### # # " // F
"# ### # ### # " // I
"### # # # ### " // U
"### ### # # # " // M
"# # ### ### #"; // * End
FX_Free(encoded);
writer.SetWideNarrowRatio(2);
encoded = writer.Encode("PDFIUM", BCFORMAT_CODE_39, width, height);
expected =
"# # ## ## # " // * Start
"# ## ## # # " // P
"# # ## # ## " // D
"# ## ## # # " // F
"# ## # ## # " // I
"## # # # ## " // U
"## ## # # # " // M
"# # ## ## #"; // * End
FX_Free(encoded);
}
TEST(OnedCode39WriterTest, Encode) {
CBC_OnedCode39Writer writer;
int32_t width;
int32_t height;
uint8_t* encoded;
const char* expected;
encoded = writer.Encode("", BCFORMAT_CODE_39, width, height);
EXPECT_EQ(1, height);
EXPECT_EQ((0 + DELIMITER_CHARS) * MODULES_PER_CHAR - 1, width);
expected =
"# # ### ### # " // * Start
"# # ### ### #"; // * End
for (size_t i = 0; i < strlen(expected); i++) {
EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
}
FX_Free(encoded);
encoded = writer.Encode("123", BCFORMAT_CODE_39, width, height);
EXPECT_EQ(1, height);
EXPECT_EQ((3 + DELIMITER_CHARS) * MODULES_PER_CHAR - 1, width);
expected =
"# # ### ### # " // * Start
"### # # # ### " // 1
"# ### # # ### " // 2
"### ### # # # " // 3
"# # ### ### #"; // * End
for (size_t i = 0; i < strlen(expected); i++) {
EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
}
FX_Free(encoded);
encoded = writer.Encode("PDFIUM", BCFORMAT_CODE_39, width, height);
EXPECT_EQ(1, height);
EXPECT_EQ((6 + DELIMITER_CHARS) * MODULES_PER_CHAR - 1, width);
expected =
"# # ### ### # " // * Start
"# ### ### # # " // P
"# # ### # ### " // D
"# ### ### # # " // F
"# ### # ### # " // I
"### # # # ### " // U
"### ### # # # " // M
"# # ### ### #"; // * End
for (size_t i = 0; i < strlen(expected); i++) {
EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
}
FX_Free(encoded);
encoded = writer.Encode("A -$%./+Z", BCFORMAT_CODE_39, width, height);
EXPECT_EQ(1, height);
EXPECT_EQ((9 + DELIMITER_CHARS) * MODULES_PER_CHAR - 1, width);
expected =
"# # ### ### # " // * Start
"### # # # ### " // A
"# ### # ### # " // Space
"# # # ### ### " // -
"# # # # # " // $
"# # # # # " // %
"### # # ### # " // .
"# # # # # " // /
"# # # # # " // +
"# ### ### # # " // Z
"# # ### ### #"; // * End
for (size_t i = 0; i < strlen(expected); i++) {
EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
}
FX_Free(encoded);
}
TEST(OnedCode39WriterTest, Checksum) {
CBC_OnedCode39Writer writer;
int32_t width;
int32_t height;
uint8_t* encoded;
const char* expected;
writer.SetCalcChecksum(true);
encoded = writer.Encode("123", BCFORMAT_CODE_39, width, height);
EXPECT_EQ(1, height);
EXPECT_EQ((3 + CHECKSUM_CHARS + DELIMITER_CHARS) * MODULES_PER_CHAR - 1,
width);
expected =
"# # ### ### # " // * Start
"### # # # ### " // 1 (1)
"# ### # # ### " // 2 (2)
"### ### # # # " // 3 (3)
"# ### ### # # " // 6 (6 = (1 + 2 + 3) % 43)
"# # ### ### #"; // * End
for (size_t i = 0; i < strlen(expected); i++) {
EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
}
FX_Free(encoded);
encoded = writer.Encode("PDFIUM", BCFORMAT_CODE_39, width, height);
EXPECT_EQ(1, height);
EXPECT_EQ((6 + CHECKSUM_CHARS + DELIMITER_CHARS) * MODULES_PER_CHAR - 1,
width);
expected =
"# # ### ### # " // * Start
"# ### ### # # " // P (25)
"# # ### # ### " // D (13)
"# ### ### # # " // F (15)
"# ### # ### # " // I (18)
"### # # # ### " // U (30)
"### ### # # # " // M (22)
"### # # ### # " // . (37 = (25 + 13 + 15 + 18 + 30 + 22) % 43)
"# # ### ### #"; // * End
for (size_t i = 0; i < strlen(expected); i++) {
EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
}
FX_Free(encoded);
}
} // namespace
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