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compression tests

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@4862 212acab6-be3b-0410-9dea-997c60f758d6
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kichik 2007-01-23 16:05:03 +00:00
parent 9cb54c2272
commit ce18bd8cb8
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Source/Tests/compression.cpp Normal file
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#include <cppunit/extensions/HelperMacros.h>
#include "../Platform.h"
#include "../growbuf.h"
#include <stdlib.h>
#include <time.h>
#include "decompress.h"
#include "../cbzip2.h"
#include "../clzma.h"
#include "../czlib.h"
class CompressionTest : public CppUnit::TestFixture {
public:
void randData(IGrowBuf &buf, int kb) {
srand(time(0));
for (int i = 0; i < kb; i++) {
int r = rand();
for (int j = 0; j < 1024/sizeof(int); j++) {
buf.add(&r, sizeof(int));
}
}
}
// compressor must be initialized!
void compress(ICompressor &compressor, IGrowBuf& in, IGrowBuf& out) {
compressor.SetNextIn((char *) in.get(), in.getlen());
int ret;
do {
char outbuf[1024];
compressor.SetNextOut(outbuf, sizeof(outbuf));
ret = compressor.Compress(C_FINISH);
CPPUNIT_ASSERT_MESSAGE( compressor.GetErrStr(ret) , ret >= 0 );
out.add(outbuf, sizeof(outbuf) - compressor.GetAvailOut());
} while (ret == 0);
}
typedef void (*decompressInitPtr)(void *);
typedef int (*decompressWorkPtr)(void *);
void decompress(IDecompressor& decompressor, IGrowBuf& in, IGrowBuf& out) {
decompressor.init();
decompressor.setNextIn(in.get(), in.getlen());
int ret;
do {
char outbuf[1024];
decompressor.setNextOut(outbuf, sizeof(outbuf));
ret = decompressor.decompress();
CPPUNIT_ASSERT( ret >= 0 );
out.add(outbuf, sizeof(outbuf) - decompressor.getAvailOut());
} while (ret == 0);
}
// compressor must be initialized!
void testCompressDecompress(int size_kb, ICompressor &compressor, IDecompressor& decompressor) {
GrowBuf data;
GrowBuf compressed;
GrowBuf decompressed;
randData(data, size_kb);
compress(compressor, data, compressed);
decompress(decompressor, compressed, decompressed);
CPPUNIT_ASSERT_MESSAGE( "decompressed data is smaller", data.getlen() <= decompressed.getlen() );
CPPUNIT_ASSERT_MESSAGE( "decompressed data is larger", data.getlen() >= decompressed.getlen() );
CPPUNIT_ASSERT_MESSAGE( "decompressed data is different", !memcmp(data.get(), decompressed.get(), data.getlen()) );
}
void testCompressDecompress(ICompressor &compressor, IDecompressor& decompressor) {
CPPUNIT_ASSERT( compressor.Init(9, 1 << 23) == C_OK );
testCompressDecompress(1, compressor, decompressor);
CPPUNIT_ASSERT( compressor.Init(9, 1 << 23) == C_OK );
testCompressDecompress(1024, compressor, decompressor);
CPPUNIT_ASSERT( compressor.Init(9, 1 << 23) == C_OK );
testCompressDecompress(8*1024, compressor, decompressor);
CPPUNIT_ASSERT( compressor.Init(9, 1 << 23) == C_OK );
testCompressDecompress(32*1024, compressor, decompressor);
}
};
class bzip2CompressionTest : public CompressionTest {
CPPUNIT_TEST_SUITE( bzip2CompressionTest );
CPPUNIT_TEST( test );
CPPUNIT_TEST_SUITE_END();
public:
void test() {
CBzip2 compressor;
bzip2Decompressor decompressor;
testCompressDecompress(compressor, decompressor);
}
};
class lzmaCompressionTest : public CompressionTest {
CPPUNIT_TEST_SUITE( lzmaCompressionTest );
CPPUNIT_TEST( test );
CPPUNIT_TEST_SUITE_END();
public:
void test() {
CLZMA compressor;
lzmaDecompressor decompressor;
testCompressDecompress(compressor, decompressor);
}
};
class zlibCompressionTest : public CompressionTest {
CPPUNIT_TEST_SUITE( zlibCompressionTest );
CPPUNIT_TEST( test );
CPPUNIT_TEST_SUITE_END();
public:
void test() {
CZlib compressor;
zlibDecompressor decompressor;
testCompressDecompress(compressor, decompressor);
}
};
CPPUNIT_TEST_SUITE_REGISTRATION( bzip2CompressionTest );
CPPUNIT_TEST_SUITE_REGISTRATION( lzmaCompressionTest );
CPPUNIT_TEST_SUITE_REGISTRATION( zlibCompressionTest );