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 <cstring>
6
7 #include "fxbarcode/oned/BC_OnedCode39Writer.h"
8 #include "testing/gtest/include/gtest/gtest.h"
9
10 namespace {
11
12 // 3 wide and 6 narrow modules per char. 1 space between chars.
13 const int MODULES_PER_CHAR = 3 * 3 + 6 * 1 + 1;
14
15 // '*' is added as the first and last char.
16 const int DELIMITER_CHARS = 2;
17
18 // Last char may serve as checksum.
19 const int CHECKSUM_CHARS = 1;
20
TEST(OnedCode39WriterTest,SetWideNarrowRatio)21 TEST(OnedCode39WriterTest, SetWideNarrowRatio) {
22 // Code 39 barcodes encode strings of any size into modules in a
23 // unidimensional disposition.
24 // Each module is either: a narrow bar, a narrow space, a wide
25 // bar, or a wide space. Accepted wide-to-narrow ratios are between 2 and 3.
26 // This writer in particular only takes integer ratios, so it's either 2 or 3.
27 CBC_OnedCode39Writer writer;
28 EXPECT_FALSE(writer.SetWideNarrowRatio(0));
29 EXPECT_FALSE(writer.SetWideNarrowRatio(1));
30 EXPECT_TRUE(writer.SetWideNarrowRatio(2));
31 EXPECT_TRUE(writer.SetWideNarrowRatio(3));
32 EXPECT_FALSE(writer.SetWideNarrowRatio(4));
33 EXPECT_FALSE(writer.SetWideNarrowRatio(100));
34
35 writer.SetWideNarrowRatio(3);
36
37 int32_t width;
38 int32_t height;
39 uint8_t* encoded;
40 const char* expected;
41
42 encoded = writer.Encode("PDFIUM", BCFORMAT_CODE_39, width, height);
43 expected =
44 "# # ### ### # " // * Start
45 "# ### ### # # " // P
46 "# # ### # ### " // D
47 "# ### ### # # " // F
48 "# ### # ### # " // I
49 "### # # # ### " // U
50 "### ### # # # " // M
51 "# # ### ### #"; // * End
52 FX_Free(encoded);
53
54 writer.SetWideNarrowRatio(2);
55
56 encoded = writer.Encode("PDFIUM", BCFORMAT_CODE_39, width, height);
57 expected =
58 "# # ## ## # " // * Start
59 "# ## ## # # " // P
60 "# # ## # ## " // D
61 "# ## ## # # " // F
62 "# ## # ## # " // I
63 "## # # # ## " // U
64 "## ## # # # " // M
65 "# # ## ## #"; // * End
66 FX_Free(encoded);
67 }
68
TEST(OnedCode39WriterTest,Encode)69 TEST(OnedCode39WriterTest, Encode) {
70 CBC_OnedCode39Writer writer;
71 int32_t width;
72 int32_t height;
73 uint8_t* encoded;
74 const char* expected;
75
76 encoded = writer.Encode("", BCFORMAT_CODE_39, width, height);
77 EXPECT_EQ(1, height);
78 EXPECT_EQ((0 + DELIMITER_CHARS) * MODULES_PER_CHAR - 1, width);
79 expected =
80 "# # ### ### # " // * Start
81 "# # ### ### #"; // * End
82 for (size_t i = 0; i < strlen(expected); i++) {
83 EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
84 }
85 FX_Free(encoded);
86
87 encoded = writer.Encode("123", BCFORMAT_CODE_39, width, height);
88 EXPECT_EQ(1, height);
89 EXPECT_EQ((3 + DELIMITER_CHARS) * MODULES_PER_CHAR - 1, width);
90 expected =
91 "# # ### ### # " // * Start
92 "### # # # ### " // 1
93 "# ### # # ### " // 2
94 "### ### # # # " // 3
95 "# # ### ### #"; // * End
96 for (size_t i = 0; i < strlen(expected); i++) {
97 EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
98 }
99 FX_Free(encoded);
100
101 encoded = writer.Encode("PDFIUM", BCFORMAT_CODE_39, width, height);
102 EXPECT_EQ(1, height);
103 EXPECT_EQ((6 + DELIMITER_CHARS) * MODULES_PER_CHAR - 1, width);
104 expected =
105 "# # ### ### # " // * Start
106 "# ### ### # # " // P
107 "# # ### # ### " // D
108 "# ### ### # # " // F
109 "# ### # ### # " // I
110 "### # # # ### " // U
111 "### ### # # # " // M
112 "# # ### ### #"; // * End
113 for (size_t i = 0; i < strlen(expected); i++) {
114 EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
115 }
116 FX_Free(encoded);
117
118 encoded = writer.Encode("A -$%./+Z", BCFORMAT_CODE_39, width, height);
119 EXPECT_EQ(1, height);
120 EXPECT_EQ((9 + DELIMITER_CHARS) * MODULES_PER_CHAR - 1, width);
121 expected =
122 "# # ### ### # " // * Start
123 "### # # # ### " // A
124 "# ### # ### # " // Space
125 "# # # ### ### " // -
126 "# # # # # " // $
127 "# # # # # " // %
128 "### # # ### # " // .
129 "# # # # # " // /
130 "# # # # # " // +
131 "# ### ### # # " // Z
132 "# # ### ### #"; // * End
133 for (size_t i = 0; i < strlen(expected); i++) {
134 EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
135 }
136 FX_Free(encoded);
137 }
138
TEST(OnedCode39WriterTest,Checksum)139 TEST(OnedCode39WriterTest, Checksum) {
140 CBC_OnedCode39Writer writer;
141 int32_t width;
142 int32_t height;
143 uint8_t* encoded;
144 const char* expected;
145
146 writer.SetCalcChecksum(true);
147
148 encoded = writer.Encode("123", BCFORMAT_CODE_39, width, height);
149 EXPECT_EQ(1, height);
150 EXPECT_EQ((3 + CHECKSUM_CHARS + DELIMITER_CHARS) * MODULES_PER_CHAR - 1,
151 width);
152 expected =
153 "# # ### ### # " // * Start
154 "### # # # ### " // 1 (1)
155 "# ### # # ### " // 2 (2)
156 "### ### # # # " // 3 (3)
157 "# ### ### # # " // 6 (6 = (1 + 2 + 3) % 43)
158 "# # ### ### #"; // * End
159 for (size_t i = 0; i < strlen(expected); i++) {
160 EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
161 }
162 FX_Free(encoded);
163
164 encoded = writer.Encode("PDFIUM", BCFORMAT_CODE_39, width, height);
165 EXPECT_EQ(1, height);
166 EXPECT_EQ((6 + CHECKSUM_CHARS + DELIMITER_CHARS) * MODULES_PER_CHAR - 1,
167 width);
168 expected =
169 "# # ### ### # " // * Start
170 "# ### ### # # " // P (25)
171 "# # ### # ### " // D (13)
172 "# ### ### # # " // F (15)
173 "# ### # ### # " // I (18)
174 "### # # # ### " // U (30)
175 "### ### # # # " // M (22)
176 "### # # ### # " // . (37 = (25 + 13 + 15 + 18 + 30 + 22) % 43)
177 "# # ### ### #"; // * End
178 for (size_t i = 0; i < strlen(expected); i++) {
179 EXPECT_EQ(expected[i] != ' ', !!encoded[i]) << i;
180 }
181 FX_Free(encoded);
182 }
183
184 } // namespace
185