tools/CppunitTest_tools_test.mk | 1
tools/qa/cppunit/test_zcodec.cxx | 123 +++++++++++++++++++++++++++++++++++++++
2 files changed, 124 insertions(+)
New commits:
commit de22386cec6e2613e034a56ffe4bd505b4534dd3
Author: offtkp <parisop...@gmail.com>
AuthorDate: Wed Jun 1 13:38:19 2022 +0300
Commit: Tomaž Vajngerl <qui...@gmail.com>
CommitDate: Wed Jun 15 10:21:36 2022 +0200
Add unit tests for ZCodec
Add unit tests that check compressing->decompressing a file should
result in the same file. This is done by comparing the CRC32
before and after. The same tests also implicitly test that
compression/decompression works by checking the return
value of ZCodec::EndCompression.
Cases added for both mbGzLib=true/false.
Change-Id: I5516760eba5f233c20331cef83fd0b1a1603373f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/135233
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <qui...@gmail.com>
diff --git a/tools/CppunitTest_tools_test.mk b/tools/CppunitTest_tools_test.mk
index c36af07547c2..cfc2a0b875fc 100644
--- a/tools/CppunitTest_tools_test.mk
+++ b/tools/CppunitTest_tools_test.mk
@@ -39,6 +39,7 @@ $(eval $(call
gb_CppunitTest_add_exception_objects,tools_test, \
tools/qa/cppunit/test_cpu_runtime_detection_SSE2 \
tools/qa/cppunit/test_cpu_runtime_detection_SSSE3 \
tools/qa/cppunit/test_Wildcard \
+ tools/qa/cppunit/test_zcodec \
))
$(eval $(call gb_CppunitTest_add_exception_objects,tools_test,\
diff --git a/tools/qa/cppunit/test_zcodec.cxx b/tools/qa/cppunit/test_zcodec.cxx
new file mode 100644
index 000000000000..69c4aeb2429c
--- /dev/null
+++ b/tools/qa/cppunit/test_zcodec.cxx
@@ -0,0 +1,123 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4;
fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <tools/zcodec.hxx>
+#include <tools/stream.hxx>
+#include <rtl/crc.h>
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+#include <cppunit/plugin/TestPlugIn.h>
+
+namespace
+{
+// Sample text for compression
+constexpr const char* DUMMY_TEXT
+ = "Lorem ipsum dolor sit amet, consectetur adipiscing elit,\n"
+ "sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.\n"
+ "Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi
ut aliquip ex ea "
+ "commodo consequat.\n";
+constexpr auto DUMMY_SIZE = std::char_traits<char>::length(DUMMY_TEXT);
+
+class ZCodecTest : public CppUnit::TestFixture
+{
+private:
+ void testGzCompressDecompress();
+ void testMakeDummyFile();
+ void testZlibCompressDecompress();
+
+ CPPUNIT_TEST_SUITE(ZCodecTest);
+ CPPUNIT_TEST(testMakeDummyFile);
+ CPPUNIT_TEST(testGzCompressDecompress);
+ CPPUNIT_TEST(testZlibCompressDecompress);
+ CPPUNIT_TEST_SUITE_END();
+};
+
+// Creates a stream from DUMMY_TEXT to compress and decompress
+std::unique_ptr<SvMemoryStream> makeDummyFile()
+{
+ SvMemoryStream* pRet = new SvMemoryStream();
+ pRet->WriteBytes(DUMMY_TEXT, DUMMY_SIZE);
+ return std::unique_ptr<SvMemoryStream>(pRet);
+}
+
+// Test that the stream generated from makeDummyFile is valid
+void ZCodecTest::testMakeDummyFile()
+{
+ auto pStream = makeDummyFile();
+ // Check for null
+ CPPUNIT_ASSERT_MESSAGE("pStream is null", pStream);
+ decltype(DUMMY_SIZE) size = pStream->GetSize();
+ // Check size
+ CPPUNIT_ASSERT_EQUAL(DUMMY_SIZE, size);
+}
+
+// Test that ZCodec::Compress and ZCodec::Decompress work for gzlib = true
+// Compares the CRC32 checksum of the initial stream and the
compressed->decompressed stream
+void ZCodecTest::testGzCompressDecompress()
+{
+ auto pInitialStream = makeDummyFile();
+ SvMemoryStream pCompressedStream;
+ SvMemoryStream pDecompressedStream;
+ auto nInitialStreamCRC32 = rtl_crc32(0, pInitialStream->GetData(),
pInitialStream->GetSize());
+ ZCodec aCodec;
+ aCodec.BeginCompression(ZCODEC_DEFAULT_COMPRESSION, true);
+ // Set compression metadata for compressing a GZ file
+ aCodec.SetCompressionMetadata("dummy.txt", 0, nInitialStreamCRC32);
+ aCodec.Compress(*pInitialStream, pCompressedStream);
+ auto nCompressedSize
+ = aCodec.EndCompression(); // returns compressed size or -1 if
compression failed
+ // Check that the compression succeeded
+ CPPUNIT_ASSERT_GREATER(static_cast<tools::Long>(0), nCompressedSize);
+ // No need to Seek(0) here because ZCodec::InitDecompress does that
already for gz
+ aCodec.BeginCompression(ZCODEC_DEFAULT_COMPRESSION, true);
+ aCodec.Decompress(pCompressedStream, pDecompressedStream);
+ auto nDecompressedSize
+ = aCodec.EndCompression(); // returns decompressed size or -1 if
decompression failed
+ // Check that the decompressed text size is equal to the original
+ CPPUNIT_ASSERT_EQUAL(static_cast<tools::Long>(DUMMY_SIZE),
nDecompressedSize);
+ auto nCompressedDecompressedStreamCRC32
+ = rtl_crc32(0, pDecompressedStream.GetData(),
pDecompressedStream.GetSize());
+ // Check that the initial and decompressed CRC32 checksums are the same ->
gz (de)compression works
+ CPPUNIT_ASSERT_EQUAL(nInitialStreamCRC32,
nCompressedDecompressedStreamCRC32);
+}
+
+// Test that ZCodec::Compress and ZCodec::Decompress work for gzlib = false
+// Compares the CRC32 checksum of the initial stream and the
compressed->decompressed stream
+void ZCodecTest::testZlibCompressDecompress()
+{
+ auto pInitialStream = makeDummyFile();
+ SvMemoryStream pCompressedStream;
+ SvMemoryStream pDecompressedStream;
+ auto nInitialStreamCRC32 = rtl_crc32(0, pInitialStream->GetData(),
pInitialStream->GetSize());
+ ZCodec aCodec;
+ aCodec.BeginCompression(ZCODEC_DEFAULT_COMPRESSION, false);
+ aCodec.Compress(*pInitialStream, pCompressedStream);
+ auto nCompressedSize
+ = aCodec.EndCompression(); // returns compressed size or -1 if
compression failed
+ // Check that the compression succeeded
+ CPPUNIT_ASSERT_GREATER(static_cast<tools::Long>(0), nCompressedSize);
+ pCompressedStream.Seek(0);
+ aCodec.BeginCompression(ZCODEC_DEFAULT_COMPRESSION, false);
+ aCodec.Decompress(pCompressedStream, pDecompressedStream);
+ auto nDecompressedSize
+ = aCodec.EndCompression(); // returns decompressed size or -1 if
decompression failed
+ // Check that the decompressed text size is equal to the original
+ CPPUNIT_ASSERT_EQUAL(static_cast<tools::Long>(DUMMY_SIZE),
nDecompressedSize);
+ auto nCompressedDecompressedStreamCRC32
+ = rtl_crc32(0, pDecompressedStream.GetData(),
pDecompressedStream.GetSize());
+ // Check that the initial and decompressed CRC32 checksums are the same ->
zlib (de)compression works
+ CPPUNIT_ASSERT_EQUAL(nInitialStreamCRC32,
nCompressedDecompressedStreamCRC32);
+}
+
+} // namespace
+
+CPPUNIT_TEST_SUITE_REGISTRATION(ZCodecTest);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s
cinkeys+=0=break: */
