Add unit tests for Code 39 barcode writer.
Bug: pdfium:882
Change-Id: Ib73abbbc9499e1adef561d7a0ad15dc4eb51234f
Reviewed-on: https://pdfium-review.googlesource.com/13150
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index e66517e..f2fe2e1 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1955,6 +1955,7 @@
"core/fxcrt/xml/cfx_saxreader_unittest.cpp",
"core/fxcrt/xml/cfx_xmlsyntaxparser_unittest.cpp",
"fxbarcode/oned/BC_OnedCode128Writer_unittest.cpp",
+ "fxbarcode/oned/BC_OnedCode39Writer_unittest.cpp",
"fxbarcode/oned/BC_OnedEAN13Writer_unittest.cpp",
"fxbarcode/oned/BC_OnedEAN8Writer_unittest.cpp",
"fxbarcode/pdf417/BC_PDF417HighLevelEncoder_unittest.cpp",
diff --git a/fxbarcode/oned/BC_OnedCode39Writer_unittest.cpp b/fxbarcode/oned/BC_OnedCode39Writer_unittest.cpp
new file mode 100644
index 0000000..27a0410
--- /dev/null
+++ b/fxbarcode/oned/BC_OnedCode39Writer_unittest.cpp
@@ -0,0 +1,184 @@
+// 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
