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unit_test.cpp
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unit_test.cpp
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//
// unit_test.cpp
// unitTest
//
/*
This is the HDiffPatch copyright.
Copyright (c) 2012-2013 HouSisong All Rights Reserved.
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be
included in all copies of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <string>
#include <vector>
#include <time.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "math.h"
#include "libHDiffPatch/HDiff/diff.h"
#include "libHDiffPatch/HPatch/patch.h"
typedef unsigned char TByte;
typedef ptrdiff_t TInt;
typedef size_t TUInt;
static void _read_mem_stream(hpatch_TStreamInputHandle streamHandle,const hpatch_StreamPos_t readFromPos,
unsigned char* out_data,unsigned char* out_data_end){
const TByte* data=(const TByte*)streamHandle;
memcpy(out_data, data+readFromPos, out_data_end-out_data);
}
static void _write_mem_stream(hpatch_TStreamInputHandle streamHandle,const hpatch_StreamPos_t writeToPos,
const unsigned char* data,const unsigned char* data_end){
TByte* out_dst=(TByte*)streamHandle;
memcpy(out_dst+writeToPos,data,data_end-data);
}
static bool pacth_mem_stream(TByte* newData,TByte* newData_end,
const TByte* oldData,const TByte* oldData_end,const TByte* diff,const TByte* diff_end){
struct hpatch_TStreamOutput out_newDataStream;
out_newDataStream.streamHandle=newData;
out_newDataStream.streamSize=newData_end-newData;
out_newDataStream.write=_write_mem_stream;
struct hpatch_TStreamInput oldDataStream;
oldDataStream.streamHandle=(void*)oldData;
oldDataStream.streamSize=oldData_end-oldData;
oldDataStream.read=_read_mem_stream;
struct hpatch_TStreamInput serializedDiffStream;
serializedDiffStream.streamHandle=(void*)diff;
serializedDiffStream.streamSize=diff_end-diff;
serializedDiffStream.read=_read_mem_stream;
return 0!=patch_stream(&out_newDataStream,&oldDataStream,&serializedDiffStream);
}
static bool check_diff_stream(const TByte* newData,const TByte* newData_end,
const TByte* oldData,const TByte* oldData_end,const TByte* diff,const TByte* diff_end){
std::vector<TByte> testNewData(newData_end-newData);
TByte* testNewData_begin=0;
if (!testNewData.empty()) testNewData_begin=&testNewData[0];
if (!pacth_mem_stream(testNewData_begin,testNewData_begin+testNewData.size(),oldData,oldData_end, diff,diff_end))
return false;
for (TUInt i=0; i<(TUInt)testNewData.size(); ++i) {
if (testNewData[i]!=newData[i])
return false;
}
return true;
}
static bool test(const TByte* newData,const TByte* newData_end,const TByte* oldData,const TByte* oldData_end,const char* tag,size_t* out_diffSize=0){
std::vector<TByte> diffData;
printf("%s newSize:%ld oldSize:%ld ",tag, (newData_end-newData), (oldData_end-oldData));
create_diff(newData,newData_end,oldData,oldData_end, diffData);
if (out_diffSize!=0)
*out_diffSize=diffData.size();
if ((!check_diff(newData,newData_end,oldData,oldData_end, &diffData[0], &diffData[0]+diffData.size()))
||(!check_diff_stream(newData,newData_end,oldData,oldData_end, &diffData[0], &diffData[0]+diffData.size())) ){
printf("\n error!!! tag:%s\n",tag);
return false;
}else{
printf(" ok! diffSize:%ld\n",diffData.size());
return true;
}
}
static bool test(const char* newStr,const char* oldStr,const char* error_tag){
const TByte* newData=(const TByte*)newStr;
const TByte* oldData=(const TByte*)oldStr;
return test(newData,newData+strlen(newStr),oldData,oldData+strlen(oldStr),error_tag);
}
int main(int argc, const char * argv[]){
clock_t time1=clock();
TInt errorCount=0;
errorCount+=!test("", "", "1");
errorCount+=!test("", "1", "2");
errorCount+=!test("1", "", "3");
errorCount+=!test("1", "1", "4");
errorCount+=!test("22", "11", "5");
errorCount+=!test("22", "22", "6");
errorCount+=!test("1234567890", "1234567890", "7");
errorCount+=!test("123456789876543212345677654321234567765432", "asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr", "8");
errorCount+=!test("123456789876543212345677654321234567765432asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr", "asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr", "9");
errorCount+=!test("asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr123456789876543212345677654321234567765432", "asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr", "10");
errorCount+=!test("a123456789876543212345677654321234567765432asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr", "asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr", "11");
errorCount+=!test("123456789876543212345677654321234567765432asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr1", "asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr", "12");
errorCount+=!test("a123456789876543212345677654321234567765432asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr1", "asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr", "13");
{
const char* _strData14="a123456789876543212345677654321234567765432asadsdasfefw45fg4gacasc234fervsvdfdsfef4g4gr1";
const TByte* data14=(const TByte*)_strData14;
const size_t dataSize=strlen(_strData14);
size_t diffSize14=0;
errorCount+=!test(data14, data14+dataSize,data14, data14+dataSize, "14",&diffSize14);
if (diffSize14>=dataSize){
++errorCount;
printf("error!!! tag:%s\n","14 test diff size");
}
}
const TInt kRandTestCount=100000;
const TInt kMaxDataSize=1024*16;
std::vector<int> seeds(kRandTestCount);
srand(0);
for (int i=0; i<kRandTestCount; ++i)
seeds[i]=rand();
double sumNewSize=0;
double sumOldSize=0;
double sumDiffSize=0;
for (TInt i=0; i<kRandTestCount; ++i) {
char tag[50];
sprintf(tag, "error==%ld testSeed=%d",errorCount,seeds[i]);
srand(seeds[i]);
//const TInt oldSize=((TInt)1<<31)-1+i;
//const TInt newSize=(TInt)(oldSize*1.05);
const TInt oldSize=(TInt)(rand()*(1.0/RAND_MAX)*rand()*(1.0/RAND_MAX)*kMaxDataSize);
const TInt newSize=(TInt)(oldSize+(rand()*(1.0/RAND_MAX)-0.45)*oldSize);
const TInt kMaxCopyCount=(TInt)sqrt((double)oldSize);
std::vector<TByte> _newData(newSize);
TByte* newData=0; if (!_newData.empty()) newData=&_newData[0];
std::vector<TByte> _oldData(oldSize);
TByte* oldData=0; if (!_oldData.empty()) oldData=&_oldData[0];
for (TInt i=0; i<newSize; ++i)
newData[i]=rand();
for (TInt i=0; i<oldSize; ++i)
oldData[i]=rand();
const TInt copyCount=0+(TInt)((1-rand()*(1.0/RAND_MAX)*rand()*(1.0/RAND_MAX))*kMaxCopyCount*4);
const TInt kMaxCopyLength=(TInt)(1+rand()*(1.0/RAND_MAX)*kMaxCopyCount*4);
for (TInt i=0; i<copyCount; ++i) {
const TInt length=1+(TInt)(rand()*(1.0/RAND_MAX)*kMaxCopyLength);
if ((length>oldSize*4/5)||(length>newSize*4/5)) {
continue;
}
const TInt oldPos=(oldSize-length==0)?0:(TInt)(rand()*(1.0/RAND_MAX)*(oldSize-length));
const TInt newPos=(newSize-length==0)?0:(TInt)(rand()*(1.0/RAND_MAX)*(newSize-length));
memcpy(&newData[0]+newPos, &oldData[0]+oldPos, length);
}
size_t diffSize=0;
errorCount+=!test(&newData[0],&newData[0]+newSize,&oldData[0],&oldData[0]+oldSize,tag,&diffSize);
sumNewSize+=newSize;
sumOldSize+=oldSize;
sumDiffSize+=diffSize;
}
printf("\nchecked:%ld errorCount:%ld\n",kRandTestCount,errorCount);
printf("newSize:100%% oldSize:%2.2f%% diffSize:%2.2f%%\n",sumOldSize*100.0/sumNewSize,sumDiffSize*100.0/sumNewSize);
clock_t time2=clock();
printf("\nrun time:%.0f ms\n",(time2-time1)*(1000.0/CLOCKS_PER_SEC));
return (int)errorCount;
}